Question 1

Is polyether L-45 harmful to humans? Does it have an impact on the environment?

Accepted Answer

Polyether L-45 is a low-toxicity chemical, with manageable risks under normal use, but strict protection is required; environmentally, leakage into water bodies should be avoided Effects on Human Health According to the safety data sheet from the chemical database, polyether L-45 (CAS:9003-11-6) is classified as a low-toxicity chemical, with controllable risks under normal industrial use conditions. However, direct contact may cause the following health hazards: Skin irritation (H315): Direct contact can cause skin irritation, manifested as redness, itching, or discomfort. Nitrile or butyl rubber gloves must be worn during handling. In case of contact, immediately flush with plenty of running water and neutral soap for at least 15 minutes. (Eye damage (H319): Classified as Category 2A for serious eye irritation; contact can cause significant eye irritation, pain, and tearing. Chemical safety goggles compliant with EN 166 standards must be worn during operations. If the substance gets into the eyes, immediately hold eyelids open and rinse with flowing water for at least 15 minutes, then seek ophthalmological medical assistance. (Respiratory irritation (H335): Inhalation of vapors or mists may cause respiratory discomfort, coughing, or chest tightness. Use only in well-ventilated areas, and provide local exhaust ventilation if necessary. If breathing difficulties occur after inhalation, move quickly to fresh air and seek medical attention. Environmental Impact Assessment The database does not provide ecotoxicological data for polyether L-45 (such as fish LC50, daphnia EC50, biodegradability, etc.), so there is no specific quantitative assessment of the product's impact on the aquatic environment. However, based on its chemical structure, polyether L-45 belongs to the class of polyoxyethylene-polyoxypropylene block copolymers (Poloxamers). The biodegradation rate of such nonionic surctants is generally slower than that of linear surctants, indicating certain persistence in the aquatic environment. According to leakage handling requirements, it is necessary to prevent the spilled material from entering sewers, surce water, or groundwater systems, indicating that the product may have potential adverse effects on aquatic organisms. In case of leakage, use inert absorbent materials (such as sand, vermiculite, or chemical absorbents) to contain and collect the spilled material, and dispose of it through qualified agencies; direct discharge is prohibited. Combustion products include carbon monoxide, carbon dioxide, and irritating toxic vapors. Firefighting water runoff must also be controlled and collected. Comprehensive Safety Recommendations Industrial Use: Strictly follow operating procedures, wear protective gloves and goggles throughout the process, and ensure good ventilation. Storage and Transport: Store in a cool, dry warehouse at 5–35°C in sealed containers, use anti-static equipment, and keep away from strong oxidizing agents, strong acids, and strong bases. Wastewater Treatment: Industrial wastewater containing this product must be treated through a professional wastewater treatment system to meet discharge standards before release; direct discharge into the environment is prohibited. Personal Protection: Thoroughly wash hands and exposed areas after work; contaminated work clothes must not be taken out of the work area. Precautions Although this product is classified as low-toxicity, the GHS classification explicitly indicates three hazard categories. In case of ingestion, do not induce vomiting (unless directed by medical personnel). If conscious, drink a small amount of water to dilute, and immediately call a poison control center or seek medical attention. All emergency measures should be carried out in conjunction with the product's Safety Data Sheet (SDS).

Question 2

What should I do if problems occur during the use of Polyether L-45? How to obtain technical support?

Accepted Answer

If problems occur during the use of Polyether L-45, it is recommended to first conduct a preliminary investigation based on the abnormal phenomena, and contact the Guoli Chemical technical team promptly for professional support. Common Problems and Troubleshooting Ideas As a nonionic surctant, problems encountered during the use of Polyether L-45 usually manifest as poor emulsification, abnormal foam, changes in compatibility, or alterations in product appearance. When encountering these issues, preliminary investigations can be carried out as follows: 1. Poor Emulsification\/Dispersion Effect: First, confirm whether the usage concentration is within the recommended range. The HLB value of Polyether L-45 is relatively low, making it suitable for water-in-oil emulsion systems. If used in oil-in-water systems, it may need to be combined with other high HLB surctants. Next, check the water hardness and pH value. Although L-45 has strong resistance to hard water and is resistant to acids and alkalis, extreme conditions (pH13) may still affect its activity. Also, confirm whether the properties of the oil phase being emulsified have changed or if there are batch differences. 2. Abnormal Increase in Foam: Polyether L-45 is inherently a low-foaming product. If excessive foam appears, it may be due to synergistic effects when combined with other high-foaming additives or the introduction of impurities in the system. It is recommended to check each compounding component one by one and confirm the operating temperature. The cloud point characteristics of L-45 determine that its surce activity decreases at high temperatures, and foam behavior will also change accordingly. 3. Product Cloudiness or Delamination: The stock solution should be a colorless to slightly yellow transparent liquid. Cloudiness, delamination, or precipitation may occur due to storage at too low temperatures (below 5°C can cause some components to precipitate) or prolonged exposure to high temperatures. It is recommended to store sealed under conditions of 5–35°C and stir evenly before use. If the product has severely deteriorated, stop using it. 4. Skin\/Eye Irritation Reactions: If operators experience skin redness, eye irritation, or respiratory discomfort, immediately perform emergency treatment according to the product safety instructions: For skin contact, rinse with plenty of water for at least 15 minutes; for eye contact, flush continuously with eyelids open and seek medical attention as soon as possible; for inhalation exposure, move the person to a well-ventilated area. Chemical safety goggles and nitrile\/butyl rubber gloves must be worn during operation. How to Obtain Technical Support from Guoli Chemical Haian Guoli Chemical Co., Ltd. provides a comprehensive technical service system for all its products. You can get help through the following channels: Phone Consultation: Call Guoli Chemical's official technical service hotline directly (see product packaging label or company website). Describe the problem phenomenon, usage conditions, and batch number to the technician for real-time guidance. Email\/Online Support: Leave a message on the Guoli Chemical official website or send an email to the technical department, attaching details of the problem, product batch number, and site photos (if any). The technical team will reply and provide a solution within working days. On-Site Service: For major technical issues or new application development needs, you can request Guoli Chemical's technical engineers to visit the site for process diagnosis and formulation optimization guidance. Sample Retesting: If batch quality issues are suspected, you can send retained samples of the same batch to Guoli Chemical's quality inspection center for retesting and analysis to ensure the product meets ctory standards. Preparation Before Contacting Technical Support To help the technical team quickly locate the problem, it is recommended to prepare the following information before contacting them: Product Batch Number and Production Date: Located on the packaging drum label, used to trace the production batch. Usage Formulation and Process Conditions: Including the addition amount of Polyether L-45, addition sequence, system temperature, pH value, water type, etc. Description of Abnormal Phenomena: Specify the manifestation of the problem (e.g., emulsion instability, precipitation, color change), time of occurrence, and frequency. Storage Conditions: Storage environment temperature, container material, shelf life after opening, etc. On-Site Photos or Samples: If photos of abnormal phenomena or abnormal samples are available, it will greatly improve diagnostic efficiency. Notes Polyether L-45 is a low-toxicity chemical. Please wear protective gloves and goggles throughout the operation and ensure good ventilation. It is strictly forbidden to discharge abnormal products directly into sewers or the environment. Dispose of them as waste according to local regulations. Opened products should be used up as soon as possible. Unused portions must be sealed tightly to avoid moisture absorption and contamination. Any decisions involving formulation adjustments should be verified through small-scale tests under the guidance of the technical team before batch implementation.

Question 3

How to purchase Polyether L-45? What is the minimum order quantity?

Accepted Answer

Polyether L-45 generally supports a minimum order of 50kg, and the specific price needs to contact the sales team of Guoli Chemical for the latest quotation. Ordering Process Polyether L-45 (CAS: 9003-11-6) is the main product of Haian Guoli Chemical Co., Ltd., belonging to the poloxamer-type nonionic surctant. You can complete the procurement through the following methods: ① Contact the sales team: Call the official sales hotline of Guoli Chemical or send an email to the sales department, inform them of the product name (Polyether L-45), quantity, and intended use, and the sales staff will provide you with a dedicated quotation and delivery time. ② Confirm the order: The business team will issue a formal sales contract according to your needs, clearly specifying technical indicators, packaging specifications, price, and delivery method. ③ Payment and delivery: After completing the payment as agreed in the contract, the company arranges logistics for shipment. Product Identification Information ItemParameter Product NamePolyether L-45 (Polyether Polyol L-45) AliasPolyether Polyol L-45 / Pluronic L-45 / Poloxamer CAS Number9003-11-6 AppearanceColorless to slightly yellow transparent liquid Ion TypeNonionic Packaging Specifications50kg plastic drum / 200kg plastic drum / IBC tote Price DescriptionNegotiable (price fluctuates with the market, please contact sales for the current daily quotation) Ordering Notes Minimum Order Quantity: The current product database does not clearly record a specific minimum order quantity. Under normal circumstances, a single drum (50kg) can be ordered, and larger quantities can be negotiated for better prices. It is recommended to confirm your required quantity directly with the sales team. Sample Service: If you need to test the product performance first, you can apply for a free sample from Guoli Chemical. Please provide your company information and a description of the test purpose. Samples are usually shipped via SF Express or logistics. Delivery Cycle: For in-stock products, shipment is generally made within 1-3 working days after payment; if inventory is tight and production is required, the cycle is about 5-10 working days, subject to the contract. Transportation and Storage: This product is not classified as hazardous chemical, so transportation is relatively convenient. After receipt, store in a cool, dry place at 5–35°C, keep the container sealed, and avoid mixing storage with strong oxidizers, strong acids, and strong bases. Technical Consultation: If you have any questions in formulation application (such as HLB value matching, cloud point selection, dosage optimization, etc.), the technical team of Guoli Chemical can provide one-on-one application guidance.

Question 4

Does polyether L-45 meet environmental requirements? Can a test report be provided?

Accepted Answer

Polyether L-45, as a poloxamer-type nonionic surctant, has good biodegradability and environmental compatibility. However, Guoli Chemical currently does not provide the full test report for download on the public section of the website; specific environmental compliance documents need to be obtained by contacting the sales or technical department. Detailed Explanation Polyether L-45 (CAS: 9003-11-6) belongs to polyoxyethylene-polyoxypropylene block copolymers (poloxamer/Pluronic type). These nonionic surctants have relatively good biodegradation potential in the environment. The ether bonds in their molecular structure can gradually break under natural conditions, ultimately degrading into low molecular weight fragments without long-term persistent accumulation in the environment. From the characteristics of the product itself, Polyether L-45 has low-foaming properties, which can reduce the organic load in wastewater in industrial cleaning and rinsing applications, lowering the difficulty of subsequent water treatment. At the same time, its excellent hard water resistance means it can maintain activity under hard water conditions, helping to reduce the amount of additional chelating agents in formulations, thereby indirectly reducing the overall environmental burden of the formulation. However, it should be clear that "meeting environmental requirements" is a question that needs to be comprehensively judged in combination with specific application scenarios, local regulations, and the customer's own environmental standards. Different countries have different environmental compliance requirements for industrial chemicals (such as EU REACH regulations, China's "Environmental Management Measures for New Chemical Substances", etc.). As a mature industrial surctant product, Polyether L-45 can meet the environmental requirements of most conventional industrial applications under compliant use conditions. About Test Reports Guoli Chemical performs strict quality inspection on each batch of Polyether L-45 before shipment. Routine shipment inspection items include appearance, hydroxyl value, cloud point, pH value and other physicochemical indicators to ensure the product meets corporate standards. To obtain the following types of reports, it is recommended to contact Guoli Chemical's sales or technical department directly: Product Quality Certificate (COA): Provided with each batch, containing the measured physicochemical indicator data for that batch Safety Data Sheet (SDS/MSDS): Product safety manual, covering GHS classification, hazard statements, and emergency response measures Environmental Compliance Statement or Test Report: Specialized documents such as REACH compliance statement, ROHS testing, biodegradability test report, etc. Application Suggestions If your application scenario has strict requirements for environmental compliance (such as REACH registration for export to the EU, compliance with specific regulations for food contact industries, etc.), it is recommended to clearly communicate the following information with Guoli Chemical's technical personnel before purchasing: Final product use and target market (specific regulatory requirements involved) Specific types of environmental testing items required (such as biodegradation rate, aquatic toxicity, VOC content, etc.) Whether a certification report issued by a third-party testing institution is needed Precautions Although Polyether L-45 is a low-toxicity chemical, it is still classified by GHS as a substance causing skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). During use, follow the operating instructions in the safety data sheet. Spills must not be discharged into sewers or surce waters. Waste disposal must be carried out by qualified institutions in accordance with local environmental regulations.

Question 5

What advantages does polyether L-45 have over other similar products?

Accepted Answer

The biggest advantage of polyether L-45 is that it is a non-ionic surctant that integrates the four major characteristics of "efficient emulsification, strong wetting, low foam easy rinsing, acid-alkali resistance and hard water tolerance". In industrial scenarios requiring low foam, efficient cleaning and wide operating condition compatibility, its performance r exceeds traditional APEO types (such as NP series) and conventional tty alcohol polyoxyethylene ether (AEO series) products. Detailed Explanation Compared with traditional alkylphenol polyoxyethylene ethers (NP/TX series, which are being phased out globally due to environmental hormone issues) and conventional tty alcohol polyoxyethylene ethers (AEO series, most with high foam), polyether L-45 (poloxamer structure) has irreplaceable structural advantages. Its EO-PO-EO block copolymer molecular architecture allows precise regulation of the ratio of hydrophobic groups (polypropylene glycol) and hydrophilic groups (polyethylene glycol), bringing an ideal balance region with an HLB value of 11-13. This means that L-45 can not only rapidly disperse oily substances into stable oil-in-water emulsions, but also exhibit extremely low foaming during the emulsification process – a performance that is difficult for similar competing products to achieve simultaneously. In actual working conditions, traditional wetting agents such as AEO-9 tend to produce a large amount of foam during spray cleaning, leading to overflow, while the low foam characteristic of L-45 makes it the preferred choice for high-pressure spray cleaning and dish drying machines. In addition, the cloud point of polyether L-45 is about 65~75°C, within which the cleaning efficiency is highest. Above the cloud point, phase separation actually eliminates foam, and its inherent foam suppression mechanism is superior to the traditional combination of surctants plus defoamers, fundamentally solving the drawbacks of defoamer precipitation and oil floating. Technical Parameters Performance IndicatorPolyether L-45Conventional AEO-9NP-10 Ion typeNonionicNonionicNonionic HLB value11~13approx. 13~14approx. 13~14 Cloud point (1% aqueous solution)65~75°Capprox. 70~75°Capprox. 60~65°C Foaming characteristicLow foamMedium-high foamMedium-high foam Surce tension (0.1%, 25°C, mN/m)30~35approx. 28~32approx. 29~33 Hard water resistanceExcellentGoodir Environmental safetyBiodegradableBiodegradableContains APEO, restricted use Kinematic viscosity (25°C, mm²/s)500~1000Low viscosity liquidMedium viscosity Application Recommendations Preferred for industrial cleaning agent formulations: It is recommended to use 1.5%~3% of polyether L-45 in metal spray cleaning and hard surce cleaners, utilizing its penetration and low foam dual performance to replace NP-10 and AEO-9, which can significantly reduce or eliminate the addition of defoamers. Synergist for dish drying agents: When compounded with food-grade chelating agents at an addition level of 0.5%~2%, its rapid spreading property allows the water film to be instantly stripped from the dish surce, achieving a "dry upon exit" streak-free bright effect, while meeting the strict low foam requirements of commercial dishwashers. Metalworking lubricating cooling fluids: Used as the main emulsifier and foam suppressor in high-pressure spray cutting environments, recommended dosage 5%~15%. It does not form soap scum in hard water with high concentrations of calcium and magnesium ions, ensuring the precision of precision parts machining and long-term cleanliness of the tank liquid. Precautions Low foam does not mean completely foam-free: Agitation in pure water at room temperature can still produce a small amount of transient foam, but it dissipates quickly under conditions above the cloud point (above 65°C) or in a greasy environment. Avoid gel phase: When diluted to a high-concentration aqueous solution (about 40%~60%), polyether L-45 may temporarily form a gel. It is recommended to slowly add it to water with stirring, and avoid direct contact with stagnant water in the gel concentration range. If it comes into contact with skin or eyes, rinse thoroughly with plenty of water; wear butyl or nitrile rubber gloves and chemical safety goggles during operation. This product is low toxicity but still avoid inhaling vapors.

Question 6

How to store polyether L-45? What is the shelf life?

Accepted Answer

Polyether L-45 should be stored sealed in a cool, dry, well-ventilated warehouse, with temperature strictly controlled between 5–35°C; the shelf life is not explicitly marked in the database, but under proper storage conditions, the industry typically recommends 12 months. Detailed Description Polyether L-45 is a polyoxyethylene-polyoxypropylene block copolymer (poloxamer type nonionic surctant). It appears as a colorless to slightly yellow transparent liquid at room temperature, with a flash point greater than 200°C and relatively stable chemical properties. However, under improper storage conditions, quality may degrade due to moisture absorption, oxidation, or high temperature. The core principles for storage are sealing, protection from light, low temperature, and isolation from incompatible substances. Regarding the shelf life, the Guoli Chemical product database does not specify a precise shelf life for this product. Based on general industry standards and experience with similar nonionic surctant products, under strict adherence to storage conditions (5–35°C, sealed, protected from light), the recommended usage period from the date of manucture is 12 months. For products beyond this period, it is recommended to recheck key indicators (such as hydroxyl value, acid value, moisture content, and cloud point) before use, and if qualified, they may still be used. Technical Parameters (Storage Related) ParameterDataData Source Recommended Storage Temperature5–35°CGuoli Chemical Product Safety Instructions AppearanceColorless to slightly yellow transparent liquidGuoli Chemical Product Description Flash Point>200°CGuoli Chemical Product Database Freezing Point< -20°CGuoli Chemical Product Database Effective Content≥99%Guoli Chemical Product Database Moisture Content≤0.5%Guoli Chemical Product Database HygroscopicityHygroscopicGuoli Chemical Product Database Packaging Specifications50kg plastic drum, 200kg plastic drum, IBC toteGuoli Chemical Product Database Storage Operation Points Container Sealing: After use, immediately tighten the drum lid to prevent prolonged exposure to air and moisture absorption or oxidation (the product is hygroscopic, with出厂标准 moisture content ≤0.5%). Away from Heat Sources: Storage area should be away from heat, sparks, open flames, and other ignition sources; although the flash point is greater than 200°C, fire prevention measures are still necessary. Isolation from Incompatible Substances: Avoid contact or mixed storage with strong oxidizers, strong acids, strong bases, etc., to prevent chemical reactions that may cause product deterioration. Anti-static Measures: Storage and transfer equipment should be grounded and equipotentially bonded to prevent electrostatic accumulation and fire risk. First-In-First-Out Principle: Warehouse management should follow the "first-in-first-out" principle, prioritizing the use of earlier production batches to avoid prolonged storage beyond the recommended period. Precautions This product contains hazard statements H315 (causes skin irritation), H319 (causes serious eye irritation), H335 (may cause respiratory irritation). Wear protective gloves and goggles during handling and use. Avoid drastic temperature fluctuations or freezing during storage; although the freezing point is below -20°C, repeated freeze-thaw cycles may affect product uniformity and performance. The storage area should have clear safety signs and spill collection cilities, and be equipped with emergency response tools (such as inert absorbent materials) to handle accidental leaks. The above shelf life recommendation is a general industry experience value. For specific use, it is advisable to rely on actual product test indicators. If in doubt, contact Guoli Chemical technical support for batch quality confirmation.

Question 7

What safety precautions should be noted when using Polyether L-45?

Accepted Answer

Polyether L-45 is a low-toxicity nonionic surctant, but it has three hazards: eye irritation, skin irritation, and respiratory tract irritation. Comprehensive safety protection knowledge must be mastered before use. Detailed Description Polyether L-45 (CAS No.: 9003-11-6) is a poloxamer-type nonionic surctant. Although its toxicity level is low, according to GHS classification criteria, this product has three clear hazards: serious eye irritation (H319), skin irritation (H315), and may cause respiratory irritation (H335). This means that in daily operations, direct contact or inhalation of its vapor/mist may cause adverse effects on personnel health, and caution must not be relaxed due to its "low toxicity" property. The core of safe use of Polyether L-45 can be summarized as "three preventions and one ventilation": prevent contact (wear butyl rubber or nitrile rubber gloves and chemical safety goggles), prevent inhalation (ensure good ventilation or use local exhaust), and prevent accidental ingestion (no eating, drinking, or smoking during operation). After operation, hands and exposed parts must be thoroughly washed, and contaminated work clothes must not be taken out of the workplace. In emergency scenarios, the most critical disposal principles are: in case of skin or eye contact, immediately rinse with plenty of running water for at least 15 minutes (for eye rinsing, turn eyelids to ensure thoroughness); for inhalation exposure, quickly move the person to fresh air; if accidentally ingested, do not induce vomiting, only rinse the mouth and drink a small amount of water to dilute, then seek medical attention immediately and present the product safety data sheet. Hazard Classification and Hazard Statements Hazard CategoryClassification LevelHazard CodeHazard Statement Serious eye damage/eye irritationCategory 2AH319Causes serious eye irritation Skin corrosion/irritationCategory 2H315Causes skin irritation Specific target organ toxicity - single exposureCategory 3 (respiratory tract irritation)H335May cause respiratory irritation Operational Protection Requirements Protection PartProtective Equipment RequirementStandard/Description Eye protectionApproved chemical safety gogglesCompliant with EN 166 standard Hand protectionButyl rubber or nitrile rubber protective glovesSelect thickness based on contact risk assessment Body protectionChemical protective clothing (if necessary)Based on operation volume and splash risk assessment Respiratory protectionLocal exhaust ventilation or filtering respiratorMust be used in poorly ventilated or confined spaces Storage Condition Requirements Safe storage is as important as safe use. Storage of Polyether L-45 must meet the following conditions: Temperature control: Storage temperature should be controlled between 5–35°C, avoiding drastic temperature fluctuations or freezing Environmental requirements: Cool, dry, well-ventilated warehouse, away from heat sources, sparks, open flames, and other ignition sources Container management: Keep containers tightly closed, use grounded and equipotentially bonded equipment for storage and transfer to prevent static electricity accumulation Isolation requirements: Avoid contact with incompatible substances such as strong oxidizers, strong acids, and strong bases Area cilities: The storage area should be equipped with clear safety signs and spill containment cilities, along with appropriate emergency response tools Emergency Response Key Points Quick Reference Accident TypeEmergency Disposal MeasuresCritical Time/Amount Skin contactRemove contaminated clothing and gently rinse with plenty of running water and neutral soapAt least 15 minutes Eye contactHold eyelids open and rinse continuously with plenty of running water or saline solution, turning eyelids to ensure thoroughnessAt least 15 minutes; do not rub eyes Inhalation exposureMove to fresh air, keep airway open and in a warm lateral recumbent position; provide oxygen if necessarySeek medical attention immediately if breathing difficulties occur IngestionRinse mouth with water, do not induce vomiting; if conscious, drink a small amount of water (about 200–300 mL) to diluteImmediately call a poison control center or seek medical attention Spill handlingEvacuate personnel, cut off ignition sources, contain and absorb with inert absorbent material, collect in a sealed containerAvoid entering drains or surce water Fire responseUse alcohol-resistant foam, dry powder, or carbon dioxide to extinguish; do not use a direct water streamFirefighters must wear positive-pressure self-contained breathing apparatus Precautions Conduct a comprehensive risk assessment before operation to ensure all personnel are miliar with the hazards and protective measures of this product. During operation, no eating, drinking, or smoking is allowed to prevent accidental ingestion. Empty containers may retain hazardous residues; do not reuse them for other purposes. Dispose of them through qualified agencies according to local regulations. Combustion may produce carbon monoxide, carbon dioxide, and irritating toxic vapors. During firefighting, enhance ventilation and control firefighting water runoff. If irritation symptoms persist or worsen, seek medical attention immediately and provide the product safety data sheet to the doctor.

Question 8

How to use Polyether L-45? What is the recommended dosage?

Accepted Answer

Polyether L-45 is a versatile nonionic surctant, and its specific usage and dosage vary depending on the application scenario. It is usually added directly in the later processing steps as a formulation component, with a typical dosage range of 0.1%–15%. Detailed Description Polyether L-45 (Poloxamer-type nonionic surctant, CAS No. 9003-11-6) is a colorless to slightly yellow transparent liquid with an HLB value of 11–13, a cloud point of 65–75°C for a 1% aqueous solution, and is a low-foaming surctant with strong hydrophilicity. The polyoxyethylene (EO) and polyoxypropylene (PO) blocks in its molecular structure impart excellent wetting, emulsifying, and dispersing capabilities, along with outstanding hard water resistance and acid-alkali stability. In practical use, Polyether L-45 is typically added as a functional component to the aqueous or oil phase system under stirring conditions. For water-based formulations, it can be directly added to water with stirring until uniform; for emulsion or suspension systems, it is recommended to add during the homogenization or high-speed dispersion stage to fully utilize its emulsifying and dispersing efficacy. The product is a liquid at room temperature, easy to handle, and requires no pre-dissolution or heating. Technical Parameters ParameterSpecificationDescription HLB Value11–13Hydrophilic, suitable for O/W emulsion systems Cloud Point65–75°C (1% aqueous solution)Characteristic index for nonionic surctants Active Content≥99%High-purity product Surce Tension30–35 mN/m (0.1%, 25°C)Outstanding ability to reduce intercial tension CMCApprox. 1×10⁻⁴ mol/LLow critical micelle concentration, high efficiency pH Value5.0–7.5 (1% aqueous solution)Nearly neutral, strong compatibility Foaming PerformanceLow foamSuitable for spray cleaning and rapid rinsing systems Application Recommendations Based on the product's performance characteristics and application recommendations from the Guoli Chemical database, the recommended dosages for various fields are as follows: Industrial Cleaners: Recommended addition of 0.5%–2% (based on total formulation weight). As a low-foaming wetting and penetrating agent, it can be directly added to alkaline or acidic cleaning formulations, providing rapid emulsification and removal of heavy oil stains, especially suitable for spray cleaning of metals and hard surces. Dish Rinse Aids: Recommended addition of 5%–15%. Used in the rinse section at high wash temperatures, it quickly reduces the surce tension of rinse water, promoting uniform water film spreading and rapid detachment from dish surces, achieving a spot-free, streak-free dry result. Metalworking Fluids: Recommended addition of 1%–5%. As a low-foaming surctant with both lubricating and cooling functions, it effectively prevents foam overflow during high-pressure spray and high-speed cutting processes. Textile Scouring and Bleaching Agents: Recommended working solution concentration of 1–3 g/L. With excellent penetration and dispersion capabilities, it efficiently removes cotton wax and impurities during desizing, scouring, and bleaching processes, while suspending dirt to prevent redeposition. Pesticide Emulsifiers: Recommended addition of 2%–8% (based on total weight of emulsifiable concentrate or oil suspension). Better results are achieved when used in combination with anionic emulsifiers, allowing oily active ingredients to rapidly disperse into stable emulsions with uniform droplet size in water. Defoamers: Recommended addition of 0.1%–0.5%. With extremely low foaming tendency, it can be used as a base carrier in industrial defoamer formulations or synergistically with silicones to enhance foam control durability. Note: The above dosages are industrial reference ranges; specific amounts should be determined through experiments based on actual formulation systems and operating conditions. Precautions Safety Protection: This product can cause serious eye irritation, skin irritation, and respiratory irritation. Before operation, goggles and nitrile/butyl rubber protective gloves must be worn, and the work environment must be well-ventilated. Storage Conditions: Store tightly sealed in a cool, dry, and well-ventilated place at temperatures between 5–35°C. Avoid contact with strong oxidizers, strong acids, and strong alkalis; prevent freezing. Compatibility: The product is nonionic and has good compatibility with anionic, cationic, and amphoteric surctants, making it widely applicable in various composite formulation systems. Usage Limits: When used in high-temperature, strong-alkali systems, pay attention to the cloud point limitation (65–75°C). Near or above the cloud point, the product may precipitate from the aqueous solution, affecting performance.

Question 9

What industries and processes are Polyether L-45 mainly used in?

Accepted Answer

Polyether L-45 is widely used in six major industries: industrial cleaning, dish drying, metalworking, textile dyeing and finishing, pesticide formulations, and defoamers. It is a multifunctional nonionic surctant. Detailed Description Polyether L-45 (CAS No.: 9003-11-6) belongs to the poloxamer class of nonionic surctants. With its excellent emulsifying, wetting, and dispersing properties, as well as unique low-foaming characteristics, it plays a key role in multiple industrial fields. Its outstanding stability against acids and alkalis and strong resistance to hard water allow it to maintain activity under a wide range of pH conditions, making it a preferred raw material for formulation engineers designing efficient industrial auxiliaries. In the cleaning industry, Polyether L-45 serves as an efficient low-foaming wetting agent that quickly penetrates and emulsifies heavy oil and grease, making it especially suitable for spray cleaning processes on metal and hard surces. In the field of dish drying, it significantly reduces the surce tension of rinse water, promoting uniform spreading and rapid detachment of the water film, so that dishes dry immediately upon exiting the machine without watermarks or spots. In metalworking fluids, its excellent foam suppression properties effectively prevent processing foam overflow, ensuring stability in high-pressure spraying and high-speed cutting. Furthermore, Polyether L-45 demonstrates excellent penetration and dispersion capabilities in textile scouring and bleaching processes, efficiently removing cotton wax impurities and suspending soils to prevent redeposition. In pesticide formulations, it acts as an emulsifier, allowing oily active ingredients to automatically disperse into stable emulsions with uniform particle size. In the field of defoamers, its extremely low foaming tendency makes it a base carrier or synergistic component in industrial defoamer formulations. Overview of Major Application Industries and Processes Application Industry Specific Process/Scenario Function/Role Industrial Cleaning Spray cleaning of metal and hard surces, heavy oil and grease cleaning Low-foaming wetting and penetration, emulsifying heavy oil and grease, improving cleanliness Dish Drying Rinse and drying process in commercial dishwashers Reduce surce tension of rinse water, promote rapid spreading and detachment of water film, achieve quick drying without spots Metalworking Cutting fluids, grinding fluids, high-pressure spray processing Lubrication and cooling assistance, foam suppression to prevent overflow, ensure process stability Textile Dyeing and Finishing Desizing, scouring, bleaching processes Penetration and dispersion, remove cotton wax impurities, suspend soils to prevent redeposition Pesticide Formulations Preparation of emulsifiable concentrates (EC) and oil-in-water emulsions (EW) Emulsify oily active ingredients, form stable emulsions with uniform particle size Defoamers Base carrier in industrial defoamer formulations Extremely low foaming tendency, synergistic foam control with silicone/mineral oil Application Recommendations Based on specific process requirements, it is recommended to determine the optimal dosage of Polyether L-45 through small-scale trials during the formulation development stage. In industrial cleaning and dish drying applications, focus on balancing its low-foaming characteristics and wetting/spreading performance. In pesticide emulsification formulations, it is advised to conduct HLB value matching experiments to determine the optimal ratio with the active ingredient. This product can be stored stably at 5–35°C. If low temperature causes an increase in viscosity before use, proper warming can restore fluidity without affecting product performance. Precautions This product is a low-toxicity chemical, but it can cause serious eye irritation (H319), skin irritation (H315), and respiratory irritation (H335). During operation, wear chemical safety goggles and nitrile/butyl rubber protective gloves, and ensure the work environment is well-ventilated. Avoid mixing or contact with incompatible substances such as strong oxidizers, strong acids, and strong bases. Keep away from heat sources, sparks, and open flames. Use anti-static equipment for transfer. In case of accidental contact with eyes or skin, flush immediately with plenty of water for at least 15 minutes and seek medical attention promptly.

Question 10

What are the physicochemical and technical parameters of Polyether L-45?

Accepted Answer

Polyether L-45 is a poloxamer-type nonionic surctant produced by Guoli Chemical. Its physicochemical parameters include HLB value 11~13, cloud point 65~75°C, active content ≥99%, and other indicators, offering balanced overall performance and suitability for a variety of industrial formulation systems. Detailed Description Polyether L-45 (CAS No.: 9003-11-6), the full chemical name is polyoxyethylene-polyoxypropylene block copolymer, belonging to the poloxamer class of nonionic surctants. Its molecular structure is HO(C₂H₄O)ₓ(C₃H₆O)ᵧ(C₂H₄O)ₓH, with a molecular weight range of 2000~3000. The product appears as a colorless to slightly yellow transparent liquid, with excellent emulsifying, wetting, and dispersing properties. It is also known for low foaming characteristics and is widely used in industrial cleaning and metalworking fields. In terms of surce activity, the HLB value of Polyether L-45 is in the intermediate to slightly hydrophilic range of 11~13, with a cloud point of 65~75°C (1% aqueous solution), indicating good temperature stability in aqueous solutions. The surce tension at 0.1% concentration is 30~35 mN/m, and the critical micelle concentration (CMC) is approximately on the order of 1×10⁻⁴ mol/L, showing that the product can significantly reduce water surce tension at low concentrations, with high wetting and spreading efficiency. Meanwhile, the product is stable to dilute alkalis and has strong resistance to hard water, making it suitable for a wide range of pH conditions. From the perspective of purity and physical properties, the product has an active content ≥99%, solid content ≥99%, moisture ≤0.5%, free alcohol ≤1%, indicating high overall purity. Acid value ≤0.5 mgKOH/g, saponification value ≤1, iodine value ≤1, unsaturation ≤0.5 mmol/g, indicating stable chemical properties with almost no saponifiable impurities or unsaturated components. Heavy metal content ≤10 mg/kg, arsenic content ≤2 mg/kg, meeting safety standards for fine chemicals. Kinematic viscosity is 500~1000 mm²/s (25°C), density 1.02~1.06 g/cm³, refractive index 1.450~1.460 (25°C), flash point >200°C, melting point Technical Parameters Parameter Item Specification/Value Remarks Product Name Polyether L-45 Poloxamer type Full Chemical Name Polyoxyethylene-polyoxypropylene block copolymer — CAS No. 9003-11-6 — Molecular Formula HO(C₂H₄O)ₓ(C₃H₆O)ᵧ(C₂H₄O)ₓH Block copolymer structure Molecular Weight 2000～3000 — Ionic Type Nonionic — Appearance Colorless to slightly yellow transparent liquid Visual inspection Parameter Item Specification/Value Remarks HLB Value 11～13 Hydrophilic-lipophilic balance value Cloud Point 65～75 °C 1% aqueous solution Surce Tension 30～35 mN/m 0.1% aqueous solution, 25°C Critical Micelle Concentration (CMC) Approximately 1×10⁻⁴ mol/L Order of magnitude Foaming Property Low foaming — Solubility Soluble in water, ethanol, ether, etc. — Alkali Resistance Stable to dilute alkalis — <th style="width:

Polyether L-45

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Property	Value
CAS No.	9003-11-6
Molecular Formula	HO(C2H4O)x(C3H6O)y(C2H4O)xH
Appearance	Colorless to slightly yellow transparent liquid
Ionic Type	Nonionic
Avg. Molecular Weight	2000~3000
Cloud Point	65~75 (1%aq. soln., °C)
Active Content	≥99%
pH Value(1%)	5.0~7.5
pH Value(5%)	5.0~7.5
Iodine Value	≤1
Solubility	Soluble in water, ethanol, ethyl ether and other organic solvents
Surface Tension	30~35 (0.1%aq. soln., 25°C, mN/m)
CMC	1×10⁻⁴ mol/L (order of magnitude)
Acid Value	≤0.5
Saponification Value	≤1
Hydroxyl Value	50~60
Moisture	≤0.5
Density	1.02~1.06
Kinematic Viscosity	500~1000 (25°C, mm²/s)
Refractive Index	1.450~1.460 (25°C)
Flash Point	>200°C
Hygroscopicity	Hygroscopic
Chemical Stability	Stable; avoid strong acids/alkalis and high temperature
Amine Value	≤0.5
Foam Property	Low foam
Alkali Resistance	Stable in dilute alkali
Unsaturation	≤0.5 mmol/g
Viscosity	See kinematic viscosity
Melting Point	< -20°C (liquid)
Solid Content	≥99%
Free Alcohol	≤1%
Heavy Metal	≤10 mg/kg
Arsenic	≤2 mg/kg

Polyether L-45

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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