Question 1

Is Polyether L-35 harmful to humans? Does it have an impact on the environment?

Accepted Answer

Polyether L-35 has extremely low toxicity to humans, is non-irritating to the skin, and is not classified as a hazardous chemical; its impact on the environment currently lacks detailed ecotoxicological data from the Guoli Chemical database, but as a nonionic surctant, it should be disposed of in accordance with local regulations after use. Detailed Explanation Impact on Human Health: According to the safety information in the Guoli Chemical Product Database, Polyether L-35 is a non-hazardous chemical, non-flammable and non-explosive, making it very safe to use under routine industrial operating conditions. Its acute oral toxicity is extremely low (LD50 (rat) > 5 g/kg), it is non-irritating to the skin, and only very slightly irritating to the eyes. This means that under normal handling operations, as long as basic chemical handling protocols are followed, the risk to human health is very low. Nevertheless, it is still recommended to avoid direct eye contact, wash hands after handling, and use in a well-ventilated area. Impact on the Environment: Polyether L-35 is a nonionic surctant formed by block copolymerization of ethylene oxide and propylene oxide. Due to their good biodegradability, such surctants are generally considered relatively environmentally friendly. However, specific ecotoxicity data (e.g., toxicity to aquatic organisms), bioaccumulation potential, and the time required for complete degradation are not currently recorded in detail in the Guoli Chemical product database. Users should strictly comply with local environmental regulations when conducting large-scale discharges or waste disposal and must not discharge directly into water bodies or soil. Leak and Waste Disposal: In the event of a spill, use inert absorbent materials (such as sand, vermiculite) to contain and collect the spill, place it in a sealed container, and dispose of it in accordance with local regulations, then flush the spill area with plenty of water. Empty containers or residues should be treated as industrial waste and must not be discarded arbitrarily or used for holding food or drinking water. Technical Parameters The following are key safety and physicochemical parameters for Polyether L-35 (data source: Guoli Chemical Product Database), which help to fully understand its chemical properties and potential risks. Parameter Item Value / Description Hazard Classification Non-hazardous Chemical Acute Oral Toxicity (LD50, Rat) > 5 g/kg (Extremely Low Toxicity) Skin Irritation Non-irritating Eye Irritation Very Slight Irritation Appearance Colorless to Light Yellow Transparent Liquid Flash Point > 100℃ (Non-flammable) Chemical Stability Stable; Avoid Contact with Strong Oxidizers Heavy Metals (as Pb) ≤ 10 mg/kg (Very Low Content) Arsenic (As) ≤ 2 mg/kg (Very Low Content) Application Recommendations Due to its high safety, low-foaming wetting, and excellent emulsifying properties, Polyether L-35 is widely used in fields with high requirements for personnel contact and environmental residues. For example, in household cleaning agents, its low toxicity ensures safe use; in textile printing and dyeing and agrochemical formulations, its good spreadability and dispersibility can improve the utilization rate of active ingredients and reduce chemical consumption. When using, it is recommended to maximize its overall performance through formulation optimization while controlling emissions at the source. Precautions Handling Protection: Although the product is mild, it is recommended to establish good work habits, wear chemical safety glasses and protective gloves, and avoid prolonged direct contact. Emergency Treatment: If accidentally gets into eyes, immediately flush with plenty of water for at least 15 minutes with eyelids open; if irritation persists, seek medical attention. If ingested, do not induce vomiting; rinse mouth and drink water, then seek medical advice. Environmental Discharge: Specific biodegradability and aquatic toxicity data are not available; dilution does not substitute for treatment. All waste liquids, solid waste, and their containers must be handed over to qualified waste disposal companies for disposal in accordance with national and local regulations. Do not discharge into drains, soil, or any water bodies.

Question 2

What should I do if problems occur during the use of Polyether L-35? How to obtain technical support?

Accepted Answer

If you encounter problems when using Polyether L-35, you can refer to known common phenomena of the product for initial troubleshooting. Most issues stem from foam control, compatibility, or storage conditions. If the problem cannot be resolved, contact Haian Guoli Chemical Co., Ltd. for professional guidance. Detailed Explanation Polyether L-35 (Poloxamer 105) is a highly stable nonionic surctant that rarely causes serious issues under normal usage conditions. If you encounter abnormalities during use, it is recommended to follow these steps for troubleshooting: First, confirm whether the product appearance is a colorless to slightly yellow transparent liquid. If turbidity, stratification, or precipitation occurs, it usually indicates that the product may have iled due to improper storage (e.g., freezing, prolonged high temperature, or unsealed container causing moisture absorption and deterioration). In such cases, stop using and replace with a new batch. Second, check the conditions of the formulation system. Although Polyether L-35 has broad chemical compatibility and remains active in acidic, alkaline, and hard water environments, sharing it with incompatible substances such as strong oxidizers may lead to performance degradation. Additionally, if foam performance is abnormal (excessive or insufficient wetting), verify whether the dosage is within the recommended range and whether other high-foaming surctants have been introduced into the system, causing interference. If the problem cannot be identified after troubleshooting, it is recommended to promptly record detailed information about the abnormality (including system composition, pH, temperature, dosage, storage conditions, etc.) and directly contact the technical team of Guoli Chemical for targeted diagnosis. Common Issues and Countermeasures Abnormal PhenomenonPossible CauseSuggested Action Product turbidity or stratificationStorage temperature too low causing freezing, or prolonged high temperature exposure leading to degradationRecommended storage temperature: 5℃～40℃; if deteriorated, replace with a new batch Poor wetting effectInsufficient dosage, or presence of components competing for the interce in the systemIncrease dosage appropriately; check compatibility with other surctants in the formulation Abnormal increase in foamCombination with other high-foaming surctantsCheck other components in the formulation; Polyether L-35 itself is a low-foaming product Unstable emulsion/stratificationOil phase type or ratio beyond its emulsification capacityAdjust oil-water ratio, or consider combining with other emulsifiers Skin or eye discomfortDirect contact without protective equipment during operationSkin contact: wash with soap and water; eye contact: rinse with water for at least 15 minutes, seek medical attention if discomfort persists Application Recommendations To ensure optimal performance of Polyether L-35 in your system, pay attention to the following aspects: In paints and inks, add during the dilution stage to cilitate dynamic wetting; in cleaning agent formulations, combine with nonionic or anionic surctants for synergistic effects; in metalworking fluids, test compatibility with rust inhibitors and extreme pressure additives; in textile dyeing and finishing, it is especially suitable for jet dyeing processes with low foam requirements. How to Obtain Technical Support from Guoli Chemical Haian Guoli Chemical Co., Ltd. provides technical support services for all products. You can get help through the following methods: Phone consultation: Call the official customer service hotline or sales manager of Guoli Chemical directly, and describe your specific issue to the technical staff. Email support: Organize the formulation system, process conditions, and abnormal phenomena into a written description, send it to the technical department email of Guoli Chemical, and the engineers will provide written diagnosis and response. Sample shipment for analysis: If the issue involves product quality, send samples from the problematic batch to the quality inspection center of Guoli Chemical for re-testing and analysis. On-site service: For major application challenges or batch-wide abnormalities, Guoli Chemical can arrange technical personnel to assist on-site. When contacting, it is recommended to prepare the following information in advance to help technical staff quickly locate the problem: product batch number, purchase date, storage conditions, usage formulation (can be desensitized), dosage, process parameters, and detailed description and photos of the abnormal phenomenon. For detailed contact information and address, please visit the official website of Guoli Chemical or refer to the technical service terms in the product supply contract.

Question 3

How to purchase Polyether L-35? What is the minimum order quantity?

Accepted Answer

Polyether L-35 can be directly purchased by contacting the Guoli Chemical sales team, with the minimum packaging specification being a 50kg drum. It is recommended to consult with sales to confirm the specific minimum order quantity. Purchase Method Description Polyether L-35 (CAS No.: 68439-50-9) is a regular nonionic surctant product sold by Haian Guoli Chemical Co., Ltd. Since the price of chemical raw materials fluctuates with market conditions, the database shows the current quotation as RMB/ton (specific price needs to be obtained by contacting sales for the latest quotation). It is recommended to complete the purchase through the following methods: Directly contact the Guoli Chemical Sales Department to obtain real-time quotations and inventory information Provide your usage requirements, and the sales team can recommend the most suitable packaging specifications and transportation solutions Bulk purchases usually enjoy tiered price discounts Packaging Specifications and Order Quantity According to the Guoli Chemical product database, Polyether L-35 offers the following standard packaging: Packaging TypeSpecificationApplication Scenario Plastic Drum50kgSmall batch sample or laboratory use Plastic Drum200kgMedium scale industrial production IBC ToteApprox. 1000kgLarge scale continuous production needs The database does not explicitly specify an absolute minimum order quantity, but based on packaging specifications, the 50kg plastic drum is the minimum order unit. For smaller sample quantities for testing and evaluation, it is recommended to directly communicate with the sales team to request sample support. The above prices are for reference only; please contact the sales team for the latest quotation. Purchasing Advice As a Poloxamer 105 type nonionic surctant, Polyether L-35 is widely used in coatings, cleaning agents, metalworking fluids, textile auxiliaries, and other fields due to its excellent low-foaming wetting properties, emulsifying dispersibility, and broad chemical compatibility. It is recommended before the first purchase: Clarify your formulation system and required HLB value (the HLB value of this product is 18~23), and confirm product compatibility Choose the appropriate packaging specification based on monthly usage; the unit price for IBC tote purchases is usually more advantageous Request product Certificate of Analysis (COA) and Safety Data Sheet (MSDS), and understand storage and transportation requirements in advance Precautions This product is not a hazardous chemical; storage temperature is recommended at 5°C to 40°C, avoiding freezing or prolonged high temperatures Transportation method is general cargo, not subject to hazardous goods regulations, resulting in lower logistics costs Specific delivery time, freight, and payment methods shall be subject to the sales contract All price information is subject to the final official quotation from Guoli Chemical

Question 4

Does Polyether L-35 meet environmental requirements? Can a test report be provided?

Accepted Answer

According to Guoli Chemical technical data, Polyether L-35 meets basic environmental requirements under normal use conditions, but the product database does not directly store specific third-party environmental certifications (such as RoHS, REACH, etc.) test reports. The detailed description of its environmental characteristics is as follows: **1. Environmental characteristics analysis** Polyether L-35 is a non-ionic surctant, and its environmental advantages are reflected in the following aspects: - **Low ecotoxicity**: Extremely low acute oral toxicity (LD₅₀ rat > 5 g/kg), not classified as dangerous goods, non-flammable and non-explosive, with low risk of accumulation in organisms. - **Good biodegradability**: Its chemical structure uses tty alcohols (C12-14 alcohol) as the initiator, block copolymerized with ethylene oxide and propylene oxide. The molecule contains ether bonds, which have certain biodegradability potential in the environment and are not easily persistent. - **Environmental contribution in formulations**: In coatings, cleaning agents, and agrochemicals, its efficient wetting and dispersing performance can reduce the amount of other additives in the formulation, and its low foaming characteristics reduce the need for defoamers, helping downstream customers achieve water savings (easy rinsing) and energy savings in cleaning or production processes. Given that the company has passed **ISO14001 Environmental Management System Certification**, this indicates that systematic environmental management and pollution prevention measures have been implemented during production, ensuring the environmental compliance of the product from the source. **2. Recommendations for obtaining test reports** The product database accessed by the tool does not contain the PDF test report data you requested. Since environmental certifications usually target specific batches or need to comply with specific national or regional regulations (such as EU REACH SVHC screening, RoHS hazardous substance testing, etc.), it is recommended to obtain official documents through the following methods: - **Directly contact sales customer service**: You can request Guoli Chemical to provide the latest **SGS test report**, **MSDS (Material Safety Data Sheet)**, or **REACH compliance statement** for Polyether L-35. - **Request batch Certificate of Analysis (COA)**: The standard ctory inspection report usually includes key environmental indicators such as heavy metal content. The database shows that this product has a **heavy metal (calculated as Pb) content ≤ 10 mg/kg, arsenic content ≤ 2 mg/kg**, meeting conventional industrial environmental indicators. **3. Application and handling precautions** Although the product itself has extremely low toxicity, attention should still be paid during application: - Waste liquid after use should be treated in accordance with local environmental regulations and must not be directly discharged into water bodies or soil. - In case of leakage, inert absorbing materials (such as sand) should be used to contain and collect the spill, and it should be disposed of according to regulations to avoid causing environmental physical pollution.

Question 5

What are the advantages of Polyether L-35 compared to similar products?

Accepted Answer

Polyether L-35 (Poloxamer 105) stands out among similar nonionic surctants, with its core advantage lying in the combination of "efficient dynamic wetting, extremely low foam, excellent chemical compatibility, and high safety in use," making it a versatile industrial-grade solution. Detailed Description: Compared to traditional nonionic surctants (such as AEO tty alcohol polyoxyethylene ether series or TX/NP alkylphenol polyoxyethylene ether series), the molecular structure of Polyether L-35 is unique — it is a block copolymer of ethylene oxide (EO) and propylene oxide (PO). This structure endows it with the ability to rapidly reduce surce tension under dynamic conditions, i.e., during spraying, roller coating, or high-speed stirring, it can wet the substrate ster than traditional surctants, effectively preventing defects such as craters and pinholes, which many traditional products struggle to achieve simultaneously.The most significant advantage of Polyether L-35 is its "low foaming" characteristic. Traditional nonionic surctants often generate large amounts of persistent foam during use, affecting production efficiency and final product appearance. In contrast, L-35 provides excellent wetting and emulsifying capabilities while producing minimal foam, making it particularly suitable for applications where defoamers cannot be used or where foam is highly undesirable, such as jet dyeing, high-pressure cleaning, and metalworking fluid circulation systems. This makes its advantages extremely prominent in industrial cleaning and textile dyeing and printing fields.In terms of chemical compatibility and safety, Polyether L-35 also performs excellently. It can maintain stable activity in environments with a wide pH range (acid and alkali resistance) and high electrolyte concentrations (such as hard water), whereas many ordinary nonionic surctants are prone to deactivation or precipitation under such harsh conditions. Additionally, it is classified as non-hazardous, non-toxic, and non-irritating to the skin, and can replace alkylphenol polyoxyethylene ethers (APEOs) which pose potential environmental risks, making it a more environmentally friendly and safer sustainable formulation choice.Technical Parameter Comparison (Note: The following comparison data is based on the product database of Guoli Chemical and general chemical knowledge; typical values for similar products are for reference only): Comparison Indicator Polyether L-35 (Guoli Chemical) Traditional Nonionic Surctant (e.g., AEO-9) Alkylphenol Type (e.g., TX-10) Ionic Type Nonionic (EO/PO block polyether) Nonionic (tty alcohol polyoxyethylene ether) Nonionic (alkylphenol polyoxyethylene ether) HLB Value 18~23 Approximately 13~14 Approximately 13.5 Cloud Point (1% aqueous solution) 73~77 °C Approximately 60~65 °C Approximately 65~70 °C Foaming Characteristics Low foaming Medium to high foaming Medium to high foaming Dynamic Wetting Ability Excellent Good Good Alkali/Hard Water Resistance Good Susceptible to hard water and alkali Relatively stable, but with environmental risks Toxicity and Environmental Safety Non-toxic, non-irritating to skin, biodegradable Non-toxic, slightly irritating Toxic to aquatic organisms, can release environmental hormones Active Content ≥99% ≥99% (usually) ≥99% (usually) Application Recommendations: Due to its balanced performance, Polyether L-35 is particularly recommended for scenarios with high requirements for foam control, dynamic wetting, and safety, such as: Coatings and Inks: As a low-foaming dynamic wetting agent, it can fully or partially replace traditional wetting and leveling agents, spreading quickly during application and avoiding coating defects caused by foam. The recommended dosage is 0.1%~0.5% of the total formulation weight. Metalworking Fluids: As an emulsifying and lubricating additive, it stabilizes the system under harsh hard water conditions. The typical dosage is 5%~15% of the concentrate. Textile Pretreatment and Dyeing: Used as a penetrant and leveling agent, it prevents clogging in low-foaming jet dyeing processes and shortens wetting time. The dosage is approximately 1~3 g/L. High-Pressure and Clean-In-Place (CIP) Cleaning: It exhibits excellent penetrating and detergency capabilities in foam-sensitive cleaning scenarios, making it an ideal main component for formulating environmentally friendly low-foaming cleaning agents. Agrochemical Formulations: As a safe and efficient emulsifying and dispersing agent, it improves the spreading and adhesion of pesticides on plant surces. Precautions Polyether L-35 is somewhat hygroscopic; after opening the container, it should be sealed as soon as possible and stored at 5°C~40°C. Although this product is non-irritating to the skin, due to individual sensitivity differences, it is recommended to wear protective goggles and gloves during prolonged handling. When using in formulations, it is advisable to pre-test its compatibility with other components of the system, especially when used in strongly cationic systems.

Question 6

How to store Polyether L-35? What is the shelf life?

Accepted Answer

Polyether L-35 should be stored sealed in a cool and dry place, with temperature maintained at 5℃～40℃. Under recommended storage conditions, the suggested shelf life is 1-2 years from the date of production. Detailed Description Polyether L-35 (CAS number: 68439-50-9) is a chemically stable nonionic surctant. Its storage is relatively straightforward, but due to its certain hygroscopicity, special attention must be paid to moisture-proof sealing during storage. This product is not classified as a hazardous chemical; it is non-flammable and non-explosive, and can be safely stored under conventional industrial warehousing conditions. As long as basic storage specifications are followed, its excellent low-foaming wetting, emulsifying, and dispersing properties can be maintained for a long time. Regarding shelf life, Polyether L-35 does not have a clear shelf life parameter in chemical product databases. According to the product characteristics of nonionic surctants and industry practices, under unopened conditions and strictly following recommended storage conditions, the shelf life is typically 1-2 years from the date of production. For products beyond this period, it is recommended to inspect appearance, pH value, and cloud point and other key indicators before use. If no performance abnormalities are confirmed, they can still be used as appropriate. Technical Parameters Storage-Related ParametersSpecification IndexData Source AppearanceColorless to light yellow transparent liquidGuoli Chemical Product Database Recommended Storage Temperature5℃～40℃Guoli Chemical Product Database Flash Point＞100℃Guoli Chemical Product Database HygroscopicityHas certain hygroscopicityGuoli Chemical Product Database Chemical StabilityChemically stable, avoid contact with strong oxidizersGuoli Chemical Product Database Water Content≤0.5%Guoli Chemical Product Database Density (25℃)1.05~1.06 g/cm³Guoli Chemical Product Database Packaging Specifications50kg plastic drum / 200kg plastic drum / IBC toteGuoli Chemical Product Database Shelf Life Recommendation1-2 years (unopened, meeting storage conditions)Industry Common Recommendation Application Suggestions To ensure optimal performance when using Polyether L-35, it is recommended to follow these operational requirements: Withdrawal Principle: After each use, immediately seal the container to reduce contact time with air and prevent moisture absorption that could increase water content and affect product activity. First In, First Out: Follow the first-in, first-out principle in warehouse management, prioritizing the use of earlier batch stocks. Inspect Before Use: For products stored for a long time or nearing the end of the recommended shelf life, check whether the appearance is clear and transparent, and whether there is any layering or turbidity before use. If necessary, test key indicators such as pH (1% aqueous solution should be 5.0~7.5) and cloud point (1% aqueous solution should be 73~77℃). Repackaging Caution: If repackaging is required, use clean and dry containers to avoid introducing moisture or impurities. Precautions Freeze Protection: The melting point is below 0℃, but freezing should be avoided. Thawing after freezing may cause structural changes and affect performance. High Temperature Protection: Avoid prolonged exposure to high temperatures above 40℃, which may accelerate oxidation and discoloration, shortening the usable life. Keep Away from Strong Oxidizers: The storage area should be isolated from strong oxidizers to prevent chemical reactions. Do Not Reuse Containers: Empty containers must not be used for storing food or drinking water and should be disposed of properly according to regulations. Shelf Life Note: The above 1-2 year shelf life recommendation is based on industry common experience, not a legal shelf life data from product databases. Guoli Chemical has not yet provided a specific shelf life limit for this product. It is recommended to refer to the product packaging label or ctory inspection report for accuracy.

Question 7

What safety precautions should be taken when using Polyether L-35?

Accepted Answer

Polyether L-35 has good overall safety; follow basic chemical handling procedures during operation. Detailed Description The safety data sheet of Polyether L-35 indicates that it has low toxicity, is non-irritating to the skin, and has only very slight irritation to the eyes. During use, chemical safety goggles should be worn to avoid direct contact with the eyes. In case of accidental splash, immediately rinse the eyelids with plenty of water or saline for at least 15 minutes. Seek medical help if necessary. If inhaled, quickly move the person to fresh air and maintain an open airway. If feeling unwell, seek medical attention. If ingested, rinse the mouth, drink plenty of water, and do NOT induce vomiting. If an accident occurs or a large amount is ingested, seek immediate medical attention. Spill treatment: Use inert absorbent materials (such as sand, vermiculite) to contain and collect the spill, place in a sealed container, and dispose of according to local regulations. Rinse the spill area with water. Fire treatment: This product is not easily flammable, but thermal decomposition may produce irritating gases. Firefighters should wear self-contained breathing apparatus and full protective clothing, and use water spray, foam, dry powder, or carbon dioxide to extinguish the fire. The above are the safety precautions for Polyether L-35. Safety Precautions for Using Polyether L-35 Key Safe Handling Points Based on the safety data for Polyether L-35 in the product database, here are the key pieces of information you need to know: Avoid direct contact with eyes. It is recommended to wear chemical safety goggles during operation. After handling, wash hands and exposed areas thoroughly with soap and water. Use in a well-ventilated area; avoid prolonged or repeated skin contact. Do not eat, drink, or smoke during operation. Empty containers may retain product vapor or liquid; do not use for storing food or drinking water. Storage Conditions Store in a cool, dry, and well-ventilated warehouse. Keep containers tightly sealed to prevent moisture absorption or entry of foreign matter. Keep away from ignition sources, heat sources, and incompatible substances (such as strong oxidizers). Recommended storage temperature: 5°C to 40°C; avoid freezing or prolonged exposure to high temperature. Do not store or transport together with food, feed, etc. Emergency Procedures Skin contact: Remove contaminated clothing and rinse skin with plenty of running water and soap. If irritation occurs, seek medical attention. Eye contact: Immediately rinse eyelids with plenty of water or saline for at least 15 minutes. If irritation persists, seek medical help. Inhalation: Quickly move the person to fresh air and maintain an open airway. If feeling unwell, seek medical attention. Ingestion: Rinse mouth, drink plenty of water, and do NOT induce vomiting. If discomfort occurs or a large amount is ingested, seek immediate medical attention. Spill treatment: Use inert absorbent materials (such as sand, vermiculite) to contain and collect the spill, place in a sealed container, and dispose of according to local regulations. Rinse the spill area with water. Fire treatment: This product is not easily flammable, but thermal decomposition may produce irritating gases. Firefighters should wear self-contained breathing apparatus and full protective clothing, and use water spray, foam, dry powder, or carbon dioxide to extinguish the fire. Notes The above are the basic key points for the safe handling of Polyether L-35. Precautions for Using Polyether L-35 Key Safe Handling Points The safety data sheet of Polyether L-35 indicates that it has low toxicity, is non-irritating to the skin, and has only very slight irritation to the eyes. During use, chemical safety goggles should be worn to avoid direct contact with the eyes. In case of accidental splash, immediately rinse the eyelids with plenty of water or saline for at least 15 minutes. Seek medical help if necessary. If inhaled, quickly move the person to fresh air and maintain an open airway. If feeling unwell, seek medical attention. If ingested, rinse the mouth, drink plenty of water, and do NOT induce vomiting. If an accident occurs or a large amount is ingested, seek immediate medical attention. Spill treatment: Use inert absorbent materials (such as sand, vermiculite) to contain and collect the spill, place in a sealed container, and dispose of according to local regulations. Rinse the spill area with water. Fire treatment: This product is not easily flammable, but thermal decomposition may produce irritating gases. Firefighters should wear self-contained breathing apparatus and full protective clothing, and use water spray, foam, dry powder, or carbon dioxide to extinguish the fire. The above are the basic key points for the safe handling of Polyether L-35. Polyether L-35 is a nonionic surctant with excellent surce-active properties, used as an emulsifier, wetting agent, dispersant, leveling agent, softener, etc. The product appears as a colorless to slightly yellow transparent liquid, produced by block copolymerization of ethylene oxide and propylene oxide. Its special molecular structure provides unique surce activity, particularly excellent in low foaming and dynamic wetting, and can effectively withstand acidic and alkaline environments as well as hard water conditions, showing good compatibility in various industrial formulations. Core Characteristics and Advantages Efficient Low-Foaming Wetting: Possesses excellent wetting and spreading ability while generating very little foam, especially suitable for systems that require rapid wetting but are difficult to defoam. Excellent Emulsification and Dispersion: Provides good emulsification and dispersion stability for various oil phases and pigments, helping to improve the uniformity of mixed formulations. Broad Chemical Compatibility: Structurally stable, maintaining activity in aqueous systems, acid/base solutions, and environments containing electrolytes (such as hard water). Mildness: Very low toxicity, non-irritating to the skin, and only very slightly irritating to the eyes, ensuring high safety during handling. Recommended Application Fields With its balanced performance combination, Polyether L-35 has a wide range of applications in the following industries: Coatings and Inks: As a low-foaming dynamic wetting agent, it effectively prevents cratering, improves wetting and adhesion to substrates, while not affecting the system's defoaming properties. Industrial and Household Cleaning: Used as a detergency-enhancing component in hard surce cleaners to increase penetration and soil removal effects. Metalworking Fluids: Provides emulsification, lubrication, and wetting/heat dissipation properties, suitable for cutting fluids and forming lubricants. Textile Auxiliaries: As a penetrating agent and leveling agent, it helps the dye liquor quickly and uniformly wet fibers, reducing color differences. Agrochemical Formulations: As an emulsifying and dispersing auxiliary for pesticide emulsifiable concentrates and aqueous suspension concentrates, it helps improve the spreading and coverage effect of the spray. Adhesives: Used in water-based adhesives to dynamically adjust the surce tension of the system, improving initial tack and substrate adhesion. Handling and Safety Information This product is not classified as a hazardous chemical, is not easily flammable, and is very safe to use under normal industrial handling conditions. It has very low systemic toxicity and is very mild to the skin. Nevertheless, it is recommended to follow basic chemical handling practices during operation and avoid splashing into the eyes. If eye contact occurs, rinse thoroughly with plenty of water. For detailed safety handling and disposal information, refer to the product safety data sheet.

Question 8

How to use Polyether L-35? What is the recommended dosage?

Accepted Answer

Polyether L-35 is a versatile low-foaming nonionic surctant, typically added directly into the formulation during mixing. The recommended dosage varies significantly by application, generally ranging from 0.1% to 5.0% of the total formulation weight. Detailed Description Polyether L-35 (Poloxamer 105) is a liquid nonionic surctant that is very easy to use. In most industrial applications, it can be directly added to the water phase or oil phase at the appropriate stage of formulation production, and dispersed and dissolved through conventional stirring. Due to its excellent chemical compatibility and good acid-base tolerance, it can be compounded with almost all types of ionic and nonionic surctants. The dosage significantly affects the final performance; it is generally recommended to start with a small amount and conduct gradient tests. When used as a wetting agent, even at very low concentrations (e.g., 0.1%), it can effectively reduce dynamic surce tension. When used as an emulsifier or dispersant, higher dosages are required to stabilize the system. Overuse may lead to changes in system viscosity or unwanted foam, so finding the optimal balance between cost and performance is crucial. Technical Parameters Before determining the optimal dosage, understanding its physicochemical properties can help guide usage: Parameter NameTypical Value AppearanceColorless to light yellow transparent liquid Ionic TypeNonionic HLB Value (Hydrophilic-Lipophilic Balance)18~23 Cloud Point (1% Aqueous Solution)73~77 ℃ pH Value (1% Aqueous Solution, 25℃)5.0~7.5 Active Content≥99% Foam CharacteristicsLow foaming SolubilitySoluble in water, ethanol, and other organic solvents (Data source: Guoli Chemical Product Database) Application Recommendations Based on the recommended application areas from Guoli Chemical, the suggested dosages (based on total formulation weight) for various systems are as follows: Coatings & Inks (Low-foaming wetting agent): Recommended 0.1% – 0.5%. Add in the later stages of paint mixing to effectively wet the substrate, prevent craters, and without increasing foam. Industrial & Household Cleaners (Detergency booster): Recommended 1.0% – 3.0%. Can significantly enhance penetration and detergency, while maintaining low-foaming and easy-rinse properties in hard surce cleaning. Metalworking Fluids (Emulsifying & lubricating additive): Recommended 1.0% – 5.0%. First mix into the oil phase uniformly, then combine with water to form a stable emulsion, providing lubrication and cooling performance. Textile Dyeing & Printing (Penetrating & leveling agent): Recommended 0.5 – 2.0 g/L (working solution concentration). In the dye bath, it promotes uniform diffusion of the dye solution into the fiber, reducing color spotting. Agrochemical Formulations (Emulsifying & dispersing agent): Recommended 2.0% – 5.0%. Helps stabilize emulsifiable concentrates and aqueous suspensions, and enhances the spreading and adhesion of the spray liquid on plant leaves. Water-based Adhesives (Surce tension modifier): Recommended 0.2% – 1.0%. Improves wetting on difficult-to-bond substrates, enhances bonding strength, while controlling foam during application. (Note: The above dosages are general industrial recommendation ranges; optimal amounts should be determined through targeted experiments) Precautions When handling and using Polyether L-35, please note the following points: The pour point of this product is below 0℃, and it remains liquid at low temperatures. However, for ease of operation, it is recommended to use at room temperature (5℃-40℃). The product has some hygroscopicity. If not used up after opening, it should be immediately sealed and stored in a dry, ventilated place. Although this product is non-irritating to the skin and has high safety, safety protective glasses are still recommended during operation to avoid mild eye irritation. When compounding with other additives, especially anionic systems, compatibility testing is recommended in advance to ensure the stability of the overall formulation.

Question 9

What are the main industries and processes where Polyether L-35 is primarily applied?

Accepted Answer

Polyether L-35 is widely used in six major industries: coatings and inks, industrial cleaning, metalworking, textile printing and dyeing, agrochemical formulations, and water-based adhesives, primarily functioning in low-foaming wetting, emulsification and dispersion, and surce tension regulation. Detailed Explanation Polyether L-35 (international generic name: Poloxamer 105) is a bifunctional nonionic surctant produced by block copolymerization of ethylene oxide and propylene oxide. Its unique molecular structure endows it with excellent low-foaming dynamic wetting ability, along with good emulsifying and dispersing properties and broad chemical compatibility, making it an indispensable functional additive in multiple industrial fields. In process applications, the most prominent advantage of Polyether L-35 is its ability to "wet without generating foam" — it rapidly reduces dynamic surce tension, promoting liquid spreading and penetration into substrates, yet produces almost no foam interference. This characteristic makes it especially suitable for high-speed coating, jet dyeing, high-pressure cleaning, and other operating scenarios where defoaming is difficult. Additionally, this product is resistant to acids, alkalis, and hard water, maintaining stable activity even in complex aqueous systems. Detailed Breakdown of Six Application Industries and Processes 1. Coatings and Inks — Low-foaming Dynamic Wetting Agent In coating and ink formulations, Polyether L-35 effectively reduces dynamic surce tension, promoting rapid spreading and wetting on substrates and preventing surce defects such as craters. Its low-foaming property avoids foam interference during production and application (e.g., roller coating, spraying), helping to obtain smooth and uniform coatings. Suitable for both water-based and solvent-based systems. 2. Industrial and Household Cleaning — Decontamination Enhancing Component With excellent wetting and penetrating abilities, Polyether L-35 quickly enters the interce between dirt and substrate, synergizing with the main surctant to enhance cleaning efficiency. It maintains low-foaming performance in products such as hard surce cleaners and dishwashing detergents, cilitating easy rinsing and reducing water usage. 3. Metalworking Fluids — Emulsifying and Lubricating Additive In cutting fluids, grinding fluids, and forming lubricants, Polyether L-35 stabilizes oil-water emulsions to prevent separation and forms a lubricating film on metal surces, reducing friction and heat, thereby helping to extend tool life and improve surce finish. 4. Textile Printing and Dyeing — Penetrant and Leveling Agent In pretreatment and dyeing processes, this product acts as an efficient penetrant to accelerate uniform diffusion of the working liquid into fibers, and also functions as a leveling agent to reduce color spots and streaks, especially suitable for jet dyeing processes requiring low foaming. 5. Agrochemical Formulations — Emulsifying and Dispersing Agent In pesticide emulsifiable concentrates, suspension concentrates, and other formulations, Polyether L-35 stabilizes emulsion droplets or disperses solid particles to prevent stratification and flocculation, while also improving the spreading and adhesion of the spray liquid on plant leaves, enhancing the utilization rate of active ingredients. 6. Water-based Adhesives and Sealants — Surce Tension Modifier When added to water-based adhesives and sealants, it reduces system surce tension, enhances wetting on various difficult-to-bond substrates (such as plastics and metals), improves initial tack and bond strength, and controls foam to ensure smooth application. Technical Parameters ParameterValue Product NamePolyether L-35 (Poloxamer 105) CAS No.68439-50-9 Chemical TypeNonionic surctant (EO/PO block copolymer) AppearanceColorless to slightly yellow transparent liquid Ionic TypeNonionic HLB ValueNot available Cloud PointNot available pH AdaptabilityResistant to acids and alkalis, stable over a wide pH range Hard Water ToleranceGood, maintains activity in electrolyte-containing environments Foaming CharacteristicsLow foaming Application Recommendations Polyether L-35 combines wetting, emulsifying, and low-foaming functions in formulations, making it suitable as a multifunctional additive that can simplify formulation structure. It is particularly applicable in processes requiring dynamic wetting (e.g., high-speed coating, jet dyeing). The specific dosage should be determined through experiments based on the formulation system and target effects; generally, a small amount as an additive can achieve significant results. Its mild toxicological properties (LD₅₀ > 5 g/kg, non-irritating to skin) also make it suitable for use in production environments with frequent operator contact. Precautions It is recommended to wear chemical safety goggles during operation to avoid eye splashes; if contact with eyes occurs, rinse immediately with plenty of water for at least 15 minutes. Store in a cool, dry, and well-ventilated place at a recommended temperature of 5°C to 40°C, avoiding freezing or prolonged high-temperature exposure. Keep containers tightly sealed to prevent moisture absorption or entry of foreign matter, and keep away from incompatible substances such as strong oxidizers. Do not use empty containers for storing food or drinking water.

Question 10

What are the physicochemical technical parameters of Polyether L-35?

Accepted Answer

Polyether L-35 is a nonionic surctant with an HLB value as high as 18~23. It appears as a colorless to pale yellow transparent liquid at room temperature, offering excellent low-foaming wetting properties and broad chemical compatibility. Detailed Description Polyether L-35 (international common name: Poloxamer 105, CAS: 68439-50-9) is a block copolymer of ethylene oxide (EO) and propylene oxide (PO) with a molecular weight of approximately 1900. It belongs to the category of difunctional nonionic surctants. Its unique EO/PO block structure imparts low foaming and high dynamic wetting characteristics, enabling rapid reduction of surce tension in aqueous systems with minimal foam generation. The pH value of this product is neutral (5.0~7.5), with a cloud point as high as 73~77°C, maintaining activity even under high-temperature conditions. It has extremely high purity (active content ≥99%), low free alcohol content (≤0.5%), and both the acid value and iodine value are controlled at very low levels, indicating stable chemical properties and resistance to oxidative degradation. Its density is approximately 1.05~1.06 g/cm³, and the solidification point is below 0°C, remaining liquid at room and low temperatures for convenient handling. In terms of safety, Polyether L-35 exhibits extremely low toxicity (oral LD₅₀ in rats >5 g/kg), is non-irritating to the skin, and causes only minimal eye irritation. Its flash point is >100°C, and it is not classified as a hazardous chemical, making it very safe under normal industrial handling conditions. Technical Parameters ParameterSpecification/ValueTest Condition CAS No.68439-50-9— Chemical NameEthoxylated propoxylated C12-14 alcohols— Molecular FormulaR(OCH₂CH₂)x(OCH₂CH(CH₃))yOH (R=C12-14 alkyl)— Molecular WeightApproximately 1900— AppearanceColorless to pale yellow transparent liquidRoom temperature Ionic TypeNonionic— Active Content≥99%— pH Value5.0~7.51% aqueous solution, 25°C HLB Value18~23— Cloud Point73~77°C1% aqueous solution Density1.05~1.06 g/cm³25°C Kinematic ViscosityApproximately 285 mm²/s25°C Low-Shear ViscosityApproximately 300 mPa·s25°C Refractive IndexApproximately 1.45225°C Surce TensionApproximately 40 mN/m1% aqueous solution Critical Micelle ConcentrationApproximately 0.1% (w/v)— Hydroxyl Value45~56 mgKOH/g— Acid Value≤0.3 mgKOH/g— Saponification Value≤1 mgKOH/g— Iodine Value≤1— Unsaturation≤0.1 mol/kg— Moisture Content≤0.5%— Free Alcohol≤0.5%— Solidification Point— Flash Point>100°C— SolubilitySoluble in water, ethanol, ether and other organic solvents— Foam CharacteristicLow foaming— Alkali ResistanceGood— Heavy Metals (as Pb)≤10 mg/kg— Arsenic Content≤2 mg/kg— Application Recommendations Due to its high HLB value (18~23), extremely low foaming, and moderate cloud point, Polyether L-35 is particularly suitable for the following scenarios: Coatings & Inks: Recommended addition amount: 0.1%~0.5%. Acts as a low-foaming dynamic wetting agent, effectively preventing cratering, improving substrate wetting, and not affecting the defoaming performance of the system. Industrial Cleaning: Recommended addition amount: 1%~5%. Used in combination with anionic or nonionic surctants to enhance penetration and detergency efficiency. Metalworking Fluids: Recommended addition amount: 2%~8%. Serves as an emulsifying stabilizer and lubricity additive to improve the overall performance of the working fluid. Textile Dyeing & Printing: Recommended dosage: 0.5~2 g/L. Acts as a penetrating and leveling agent, suitable for low-foaming processes such as jet dyeing. Agrochemical Formulations: Used as an emulsifying and dispersing auxiliary. Recommended addition amount: 3%~10% (based on oil phase) to enhance spreading and adhesion of the spray solution. Notes Store in a cool, dry place. Recommended temperature: 5°C~40°C. Keep the container sealed to prevent moisture absorption. Although the product is non-irritating to the skin, it is recommended to wear chemical safety goggles during handling to avoid splashing into the eyes. Avoid contact with strong oxidizing agents. Though not flammable, thermal decomposition may produce irritating gases. The product has some hygroscopicity; after opening, use promptly and reseal the container. Packaging specifications: 50 kg plastic drum, 200 kg plastic drum, IBC tote.

Polyether L-35

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Property	Value
CAS No.	68439-50-9
Molecular Formula	R(OCH2CH2)x(OCH2CH(CH3))yOH (R=C12-14alkyl)
Appearance	Colorless to pale yellow transparent liquid
Ionic Type	Nonionic
Avg. Molecular Weight	~1900
Cloud Point	73~77 (1%aq. soln., °C)
Active Content	≥99%
pH Value(1%)	5.0~7.5 (1%aq. soln., 25℃)
pH Value(5%)	5.0~7.5 (5%aq. soln., 25℃)
Iodine Value	≤1
Solubility	Soluble in water, ethanol, ethyl ether and other organic solvents
Surface Tension	~40 (1%aq. soln., mN/m)
CMC	~0.1% (w/v)
Acid Value	≤0.3
Saponification Value	≤1
Hydroxyl Value	45~56
Moisture	≤0.5
Density	1.05~1.06 (25°C, g/cm³)
Kinematic Viscosity	~285 (25°C, mm²/s)
Refractive Index	~1.452 (25°C)
Flash Point	＞100°C
Hygroscopicity	Slightly hygroscopic
Chemical Stability	Chemically stable; avoid contact with strong oxidizers
Amine Value	≤1
Tertiary Amine Content	≤0.1%
Foam Property	Low foam
Alkali Resistance	Good
Unsaturation	≤0.1 mol/kg
Viscosity	~300 mPa·s (25°C)
Melting Point	<0°C (liquid)
Low Shear Viscosity	~300 (25℃, mPa·s)
Solid Content	≥99%
Free Alcohol	≤0.5%
Heavy Metal	≤10 (as Pb, mg/kg)
Arsenic	≤2 (mg/kg)

Polyether L-35

Product Details

Applications

Properties

Safety

Product Overview

Performance Features

Packaging and Storage

Polyether/Poloxamer Applications

Product Properties

Safety

GHS

Handling

Storage

First Aid

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