Question 1

Is Polyether F-68 harmful to humans? Does it have an impact on the environment?

Accepted Answer

Under normal use conditions, Polyether F-68 is a low-toxicity, relatively safe nonionic surctant, but direct contact may cause skin, eye, and respiratory tract irritation. In case of large spills, it should be prevented from entering water bodies. Effects on Human Health Polyether F-68 (Poloxamer 188) is generally recognized as a low-toxicity substance with good biocompatibility, which is why it is widely used in high-risk fields such as pharmaceutical injections, oral solutions, and cell culture. However, according to the GHS chemical classification system, this substance is still classified as a skin irritant (Category 2) and an eye irritant (Category 2A), with the signal word "Warning" and the pictogram GHS07 (Exclamation mark). Specifically, direct contact may cause the following health issues: Skin contact (H315) may cause irritation reactions such as erythema, dryness, or cracking; Eye contact (H319) may cause severe eye irritation, resulting in pain, redness, and tearing; Inhalation of dust (H335) may cause respiratory tract irritation, leading to coughing or breathing discomfort. Therefore, nitrile rubber protective gloves, chemical safety goggles, and operation in a well-ventilated area are required. In case of accidental contact, immediately rinse with plenty of water, and seek medical attention if irritation persists. Impact on the Ecological Environment Polyether F-68 is an environmentally friendly surctant. The polyoxyethylene-polyoxypropylene block in its molecular structure can gradually degrade in the natural environment. It does not exhibit characteristics of persistent organic pollutants, and there is no evidence of significant bioaccumulation in living organisms. The product itself is not flammable and is not classified as a marine pollutant. It is not listed as a dangerous good under the United Nations classification for the transport of dangerous goods. Nevertheless, it is not recommended to release it into the environment in large quantities or in an uncontrolled manner. In the event of a large spill, it should be contained by diking and collected using inert absorbent materials such as sand or vermiculite. It is strictly prohibited to discharge into drainage systems, surce water, or soil. Waste products and contaminated containers must be disposed of by incineration or neutralization through a licensed professional waste treatment cility, and must not be discarded arbitrarily or mixed with household waste. Technical Parameters (Safety-Related) ItemParameter GHS Skin Corrosion/Irritation ClassificationCategory 2 GHS Eye Damage/Irritation ClassificationCategory 2A Specific Target Organ Toxicity (Single Exposure)Category 3 (Respiratory Tract Irritation) Hazard Statement CodesH315 · H319 · H335 Signal WordWarning PictogramGHS07 (Exclamation Mark) FlammabilityNon-flammable Solid Transport Hazard ClassificationNon-Dangerous Goods (Not Restricted) Safe Use Recommendations Pharmaceutical and Biotechnology Fields: In applications such as intravenous emulsions and cell culture media, Polyether F-68 has undergone extensive toxicological evaluation and is safe when used at specified dosages (e.g., 0.5~3 g/L in cell culture). It exhibits extremely low toxicity to humans and cells. Personal Care Products and Cosmetics: When used as a mild nonionic emulsifier in finished products such as creams, lotions, and shampoos, it generally does not cause skin irritation at the product concentration. However, formulation engineers should still pay attention to skin compatibility testing of the final product. Industrial Operating Environment: When handling solids, minimize mechanical agitation and dust generation. Operators must wear dust masks, protective gloves, and goggles. The work area should be equipped with eyewash stations and emergency showers. Precautions Polyether F-68 solid is hygroscopic. Store in a tightly sealed container to avoid prolonged exposure to humid conditions, which may cause caking or degradation. Although this product is extremely safe in pharmaceutical-grade applications, industrial-grade products may have different safety profiles due to purity variations. Verify specific batch data before use. In case of eye contact, immediately rinse with flowing water for at least 15 minutes. Do not rub. If wearing contact lenses, attempt to safely remove them after 5 minutes of rinsing and continue rinsing. When disposing of waste, contaminated washing solutions and absorbent materials must also be managed as chemical waste and must not be directly discharged.

Question 2

What should I do if problems occur during the use of Polyether F-68? How to obtain technical support?

Accepted Answer

If problems occur during the use of Polyether F-68, first conduct preliminary troubleshooting and emergency treatment based on the type of problem, then obtain professional technical support through the official channels of Guoli Chemical. Common Problems and Preliminary Troubleshooting Polyether F-68 is a stable non-ionic surctant. Problems that may occur during use are usually related to operating conditions, storage environment, or formulation compatibility. It is recommended to self-check from the following aspects: Dissolution and Dispersion Issues: Polyether F-68 is a white to slightly yellow waxy solid, which dissolves slowly at room temperature. It is recommended to slowly add the product to warm water (30～50°C) under stirring conditions, and continue stirring until completely dissolved. If agglomeration occurs, appropriately increase the water temperature and extend the stirring time, avoiding large one-time feeding. Formulation Stability Anomalies: If stratification, turbidity, or precipitation occurs in the preparation, check whether the system pH value is within the appropriate range, and whether there is compatibility conflict with electrolytes or other surctants. Polyether F-68 has good tolerance to acids, bases, and hard water ions, but extreme conditions may still affect its performance. It is recommended to conduct systematic formulation compatibility experiments. Emergency Treatment If skin contact occurs during operation, immediately remove contaminated clothing, wash the affected area thoroughly with plenty of soap and warm water, and seek medical attention if irritation or rash appears. If accidentally splashed into eyes, rinse immediately with running clean water or saline solution for at least 15 minutes, keeping eyelids open during rinsing, and be sure to seek ophthalmologist treatment if irritation persists. If inhalation of dust causes respiratory irritation, quickly move the person to fresh air, and seek medical attention immediately if symptoms persist. In case of leakage, cover and collect with inert absorbent materials (such as sand, vermiculite), transfer to chemical waste containers, and prevent entry into drainage systems or soil. How to Obtain Guoli Chemical Technical Support Guoli Chemical provides professional technical support services to customers. You can get help through the following channels: Phone Consultation: Call the official technical service hotline of Haian Guoli Chemical Co., Ltd. to communicate directly with engineers about product usage issues. Email Support: Send the problem description, product batch number, usage conditions, and specific details of the problem to the company's technical service email. Technical personnel will reply within working days. Sample Inspection: If product batch quality issues are involved, contact the sales department to arrange sample inspection. The company's quality testing laboratory will conduct analysis and verification. On-site Service: For major technical problems or critical application scenarios (such as pharmaceutical preparations, biotechnology cell culture, etc.), you can schedule technical engineer on-site support services. Official Website: Visit the official website of Guoli Chemical to access product technical data sheets (TDS), safety data sheets (SDS/MSDS), and application guides. Preparation Before Contacting Technical Support To efficiently solve the problem, it is recommended to prepare the following information before contacting: product name and batch number (Polyether F-68 / CAS 9003-11-6), purchase date and quantity, specific application field and usage concentration, time and detailed description of the problem, measures already taken, and your contact information. Precautions This product is classified under GHS as Skin Irritation Category 2, Eye Irritation Category 2A, and Respiratory Irritation Category 3. Protective gloves, goggles, and dust masks must be worn during operation. The product should be stored in a cool (recommended below 25°C), dry, and well-ventilated area, away from high temperatures, heat sources, and strong oxidizers. Waste products and contaminated containers must be disposed of by qualified agencies in accordance with chemical waste management regulations, and are strictly prohibited from being discharged into sewers or soil.

Question 3

How to purchase Polyether F-68? What is the minimum order quantity?

Accepted Answer

Polyether F-68 can be purchased directly by contacting the sales team of Haian Guoli Chemical Co., Ltd. The current packaging specification is 25kg/bag, and the minimum order quantity needs to be confirmed with sales. Detailed Description Polyether F-68 (CAS No.: 9003-11-6, also known as Poloxamer 188) is one of the core products of Guoli Chemical, widely used in pharmaceutical preparations, biotechnology, personal care products, and industrial auxiliaries. According to the Guoli Chemical product database, this product is conventionally packed in 25kg woven bags. The specific minimum order quantity is not directly indicated in the database, and it usually depends on stock availability, customer requirements, and customization requests. It is recommended to contact the Guoli Chemical sales team directly for the accurate minimum order quantity and tiered pricing. Since the price of chemical raw materials is affected by various ctors such as raw material costs, market conditions, purchase quantity, and specification grade, the price information in the database is for reference only. The actual transaction price needs to be provided by the Guoli Chemical sales team based on the current market situation in a formal quotation. It is recommended to prepare detailed usage instructions and estimated annual usage volume when inquiring, so as to match the optimal supply plan for you. Technical Parameters (Data source: Guoli Chemical product database) ItemIndex AppearanceWhite to slightly yellow waxy solid Ionic typeNonionic surctant HLB value29 Active content≥99.0% Hydroxyl value9~12 mg KOH/g Moisture content≤0.5% Melting point52~57℃ pH value (1% aqueous solution)5.0~8.0 Cloud point (1% aqueous solution)>100℃ Packaging specification25kg woven bag Minimum order quantityNo fixed data, please contact sales for confirmation Application Suggestions The core application scenarios of Polyether F-68 are closely related to its order quantity requirements: Pharmaceutical field: Used as an emulsifier and solubilizer in intravenous emulsions and oral liquid preparations, usually requiring high product purity and batch consistency. It is recommended to request the COA (Certificate of Analysis) and relevant pharmacopoeia compliance statements when purchasing. Biotechnology and cell culture: When used as a shear protectant, the typical concentration is 0.5~3 g/L. For small-scale laboratory trials, customers can first inquire about samples or small package sizes. Personal care products and industrial auxiliaries: When used as an emulsifier, dispersant, or lubricant, the addition is based on the formulation ratio. For batch production, it is recommended to purchase by tonnage to obtain better pricing. Precautions This product is a solid non-flammable substance, but the GHS classification is Skin irritation (Category 2), Serious eye irritation (Category 2A), Respiratory irritation (Category 3). During operation, wear a dust mask, chemical protective gloves, and safety goggles. Transportation is as non-restricted general cargo, but storage requires keeping the container tightly closed in a cool (below 25℃), dry place, avoiding moisture and caking. Before purchasing, please confirm the local regulatory access requirements for this chemical (especially when used for pharmaceutical or food-related purposes).

Question 4

Does Polyether F-68 meet environmental requirements? Can a test report be provided?

Accepted Answer

Polyether F-68 meets environmental compliance standards when strictly following operating procedures and waste management requirements, and its high purity and low heavy metal content make its environmental impact controllable. Detailed Explanation Polyether F-68 (Poloxamer 188), as a nonionic surctant, its environmental compliance is mainly reflected in its biocompatibility during use, proper disposal during waste stage, and the content of hazardous substances in the product itself. According to the Guoli Chemical product database, the heavy metal content (calculated as lead) of this product is ≤10 mg\/kg, arsenic content is ≤2 mg\/kg, and it does not contain phosphorus (calculated as P₂O₅). These indicators are at low levels, indicating that the chemical hazard of the product itself is low. At the same time, the product safety overview clearly states that it has good biocompatibility and environmentally friendly characteristics. In terms of environmental risk control, the Safety Data Sheet (SDS) in the database has strict regulations on environmental protection: the product must not enter drainage systems, surce water, or soil; in case of leakage, inert adsorption materials should be used for collection and transfer to chemical waste containers; cleaning wastewater must be treated as chemical waste and must not be discharged directly. It is recommended to dispose of waste by incineration or harmless treatment through certified institutions. These regulations indicate that the environmental impact of the product at the end of its life cycle can be minimized through compliant measures. It should be noted that Polyether F-68 is not a "biodegradable" surctant (the database does not indicate rapid biodegradability), but it has been long-term recognized by global pharmaceutical regulatory agencies (such as FDA and EMA) in high-safety fields such as pharmaceutical injections and cell culture, indirectly confirming its low-risk properties to humans and the environment during use. As long as users strictly follow waste disposal regulations, this product can fully meet current environmental regulatory requirements. Technical Parameters (Environmental Related Indicators) Indicator ItemValueDescription Heavy Metals (as Pb)≤10 mg\/kgBelow general industrial discharge limits Arsenic (As)≤2 mg\/kgComplies with strict pharmaceutical excipient limits Bound Phosphorus (as P₂O₅)0%Phosphorus-free, avoiding eutrophication risks Iodine Value≤1 g I₂\/100gVery low unsaturation, good chemical stability pH (1% aqueous solution)5.0~8.0Near neutral, low impact on aquatic environment Free Alcohol Content≤0.5%High purity, few by-products Flash Point>260℃Non-flammable, safe for transport and storage Application Recommendations Given the environmental compliance characteristics of this product, it is particularly suitable for applications with high environmental requirements: Pharmaceutical and Biotechnology: When used as an intravenous emulsion or cell protectant, its low toxicity and good biocompatibility ensure product safety. Waste liquid should be sterilized at high temperature and then disposed of as medical waste. Personal Care Products: When used in rinse-off cosmetics (such as shampoos and body washes), it is recommended to control the dosage in the formulation to ensure that the wastewater treatment system can effectively remove it. Industrial Applications: In scenarios such as lubrication and mold release, priority should be given to closed-loop circulation systems to reduce emissions, and waste liquid should be collected and processed by compliant institutions. How to Obtain a Test Report Currently, the Guoli Chemical product database does not contain an independent third-party environmental test report electronic file for this product. According to the product quality standard system, the routine testing of this product covers the above key indicators such as heavy metals, arsenic, pH, and moisture. Each batch of product is accompanied by a ctory inspection report. To obtain a formal test report (including environmental parameters) for a specific batch, it is recommended that you: Contact the Guoli Chemical sales or technical service department, provide the specific batch number or procurement requirements, and request the complete batch Certificate of Analysis (COA); If a third-party environmental test report (such as RoHS, REACH compliance statement, or biodegradability special report) is needed, you can communicate with technical support personnel to arrange customized testing services. Precautions Under normal use, it will not cause significant harm to the environment, but direct discharge of untreated wastewater into natural water bodies is strictly prohibited. When heated or burned, it releases carbon monoxide, carbon dioxide, and irritating vapors. Fire waste must also be treated as hazardous waste. The product is hygroscopic and may form lumps when exposed to humid environments for a long time, but it will not degrade into toxic products. Empty packaging bags may contain residual product. Cleaning liquids should be included in the waste management system and must not be discarded arbitrarily.

Question 5

What are the advantages of Polyether F-68 compared to other similar products?

Accepted Answer

According to the technical data from Guoli Chemical, **the core advantages of Polyether F-68 (Poloxamer 188) over other common polyether polyols (such as L-44, L-62, L-64, etc.) lie in its extremely high HLB value, excellent water solubility, very low physiological toxicity, and its irreplaceable "shear protection" property in the biomedical field.** Although they are all polyoxyethylene-polyoxypropylene-polyoxyethylene (PEO-PPO-PEO) triblock copolymers, the unique EO/PO ratio and molecular weight of F-68 make it fundamentally different from other products in chemical properties and application areas. ### Detailed Comparison and Differentiation It should be noted that based on the current database query results, the products you are interested in, such as polyether L-44, L-42, L-62, etc., do not have independent product data records. The system retrieved and returned detailed information on polyether F-68 after the search. Therefore, the following comparison is mainly based on the known data of polyether F-68 and the general chemical principles of this type of product. **1. Differences in Hydrophilic-Lipophilic Balance (HLB) Value and Solubility** This is the most intuitive difference in chemical properties. * **Polyether F-68**: Possesses an extremely high HLB value (**29**) and is highly soluble in water. The ethylene oxide (EO) block in its molecular structure accounts for a large proportion, giving it strong hydrophilicity in aqueous solutions. * **Similar L-series Products**: Taking the typical polyether L-62 as an example, its HLB value is usually between **7-12**, showing obvious amphiphilicity. The HLB values of L-42 and L-44 are even lower, which macroscopically manifests as **poor water solubility, even in a dispersed or turbid state**, with cloud points r lower than that of F-68 (cloud point of F-68 >100°C). **2. Safety, Toxicity, and Biocompatibility** This is the fundamental advantage that distinguishes polyether F-68 from other industrial-grade polyethers. * **Polyether F-68**: As a pharmaceutical excipient, it is included in the pharmacopoeias of China, the United States, and Europe. It has extremely high purity (active content ≥99.0%) and strict limits on impurities such as heavy metals (≤10 mg/kg) and arsenic (≤2 mg/kg). This classifies it as having **low toxicity, good biocompatibility, and very low irritation to skin and eyes**, allowing it to be used in intravenous injections, oral formulations, and cell culture. * **Similar L-series Products**: Typically used as **industrial-grade** additives. Even though some varieties can be used in cosmetics, their purity and impurity control standards are r from meeting the requirements for pharmaceutical injection grade, and their physiological safety is completely incomparable. They are strictly prohibited for use in injections or preparations that come into direct contact with broken wounds. **3. Core Applications and Functional Characteristics** Both have basic functions such as emulsification, dispersion, and lubrication, but their application directions are completely different. * **Polyether F-68**: Its specialty lies in **protecting bioactive substances**. In bioreactors, it can serve as a **shear protection agent** (used at concentrations of 0.5 to 3 g/L), protecting fragile animal cells under fluid shear forces generated by stirring and aeration—something ordinary industrial polyethers cannot achieve. It is also an efficient solubilizer for poorly soluble drugs and a stabilizer for intravenous emulsions. * **Similar L-series Products**: Their functions are more inclined towards **foam control** and **physical lubrication** in industrial processes. For example, L-62 is a typical raw material for **low-foam cleaners and defoamers**, while L-44 is commonly used for **lubrication and cooling** in metalworking fluids. Database records show that F-68 itself also has **low-foam** properties, but it has advanced into the higher-end biomedical field. ### Key Physicochemical Property Comparison (Based on Known Data) The following are the key technical parameters of polyether F-68, representing its specificity among similar products: | Comparison Dimension | **Polyether F-68 (Poloxamer 188)** | **Typical L-series Polyether (e.g., L-62, etc.)** | | :---------------- | :--------------------------------------- | :--------------------------------------- | | **Ionic Type** | Non-ionic | Non-ionic | | **Appearance and Form** | White to slightly yellow waxy solid | Usually liquid to paste | | **HLB Value** | **29 (Extremely hydrophilic)** | Usually between 1-12 (lipophilic to moderately hydrophilic) | | **Cloud Point (1% aqueous solution)**| **>100°C** | Usually <50°C, even turbid at room temperature | | **Active Content** | **≥99.0%** | Industrial grade, varying content | | **Molecular Weight** | **7680~9510** | Usually lower (~2000-3000) | | **Melting Point** | **52~57°C** | Below room temperature, not applicable | | **Core Applications** | Injectable emulsifier, solubilizer, cell shear protection agent | Defoamer, industrial cleaner, metalworking fluid emulsifier | ### Application Suggestions and Precautions * **Application Selection**: If you are looking for a safe excipient, emulsifier, or solubilizer for **biomedical, cell culture, or high-standard cosmetics**, polyether F-68 is undoubtedly the inevitable choice. If the application is **foam suppression, degreasing cleaning, or metal lubrication and cooling in industrial formulations**, then the relatively lower-cost L-series products are more suitable. * **Operational Warning**: Although polyether F-68 has high biocompatibility, **database safety information indicates that its solid dust may still cause skin, eye, and respiratory tract irritation (GHS07 classification)**. When weighing or feeding in large quantities, safety regulations must be followed, and dust masks, goggles, and gloves should be worn, with operations carried out in a well-ventilated area. Store in a dry place as it is hygroscopic.

Question 6

How to store Polyether F-68? What is the shelf life?

Accepted Answer

Polyether F-68 should be stored sealed in a cool, dry, and well-ventilated place. The specific storage conditions are clear, but the database has no precise shelf life data. The industry recommendation is 2 to 3 years. Detailed Description Polyether F-68 (Poloxamer 188) is a white to slightly yellow waxy solid with certain hygroscopicity. Therefore, proper storage is crucial to maintain its performance. The product is chemically stable under normal temperature and pressure, but should avoid long-term exposure to harsh environments such as high temperature, humidity, strong acids, and strong bases, otherwise it may cause caking or slow degradation. Based on its non-ionic surctant chemical structure, Polyether F-68 has good stability. Regarding the shelf life, the product database of Guoli Chemical has no specific fixed shelf life parameters. Referring to the common industry practice for Poloxamer products, under strict compliance with recommended storage conditions, its effective service life from the date of production is usually 2 to 3 years. It is recommended that users check the ctory inspection report for the specific batch or contact Guoli Chemical to obtain the precise expiration date commitment for that batch. Technical Parameters (Key Properties Related to Storage) ParameterValue/Description AppearanceWhite to slightly yellow waxy solid HygroscopicityHygroscopic Melting Point52～57℃ Chemical StabilityStable at room temperature; avoid strong acids, strong bases, and prolonged high temperature Recommended Storage TemperatureBelow 25°C Flash Point>260℃ Moisture Content≤0.5% Application Suggestions In high-safety applications such as pharmaceutical injectable emulsions or cell culture, special attention should be paid to preventing quality deterioration during storage. It is recommended to reseal unused product from large packages using high-barrier aluminum foil bags, evacuate as much air as possible, and add desiccant, then store in a cool cabinet to reduce moisture absorption and microbial growth. For personal care and industrial applications, the original sealed woven bags can be kept and stored in a dedicated chemical warehouse with impermeable flooring. Follow the first-in, first-out inventory management principle. If the product shows significant color darkening, irritating odor, or severe caking that is difficult to break, discontinue use and dispose of it as chemical waste according to regulations. Precautions Moisture Protection is Key: Due to the product's hygroscopicity, immediately re-tie the inner bag and seal the outer packaging after each use. Do not leave it open for long periods. Keep Away from Heat Sources: The melting point of the product is only 52～57°C. Storage in summer or near heat sources can easily cause the waxy solid to soften into lumps or even melt, thus destroying its structural uniformity. Segregated Storage: Do not store together with food, feed, or beverages. The storage area should display GHS07 (exclamation mark) safety signs. Disposal: Expired or deteriorated Polyether F-68 must not be discharged into drains or soil. It should be handed over to a qualified waste disposal agency for incineration or harmless treatment.

Question 7

What safety precautions should be taken when using Polyether F-68?

Accepted Answer

Polyether F-68 is a low-toxicity nonionic surctant, but it still has skin and eye irritation. Appropriate protective equipment must be worn and it should be used in a well-ventilated environment. Detailed Explanation Polyether F-68 (Poloxamer 188) can be used safely under normal industrial hygiene conditions, but safety regulations must still be strictly followed during operation. According to GHS classification, this product lls into Skin Corrosion/Irritation Category 2, Serious Eye Damage/Eye Irritation Category 2A, and Specific Target Organ Toxicity (Single Exposure) Category 3, which may cause respiratory irritation. Its pictogram is GHS07 (Exclamation mark), and the signal word is "Warning". The main hazards include: H315 Causes skin irritation, H319 Causes serious eye irritation, and H335 May cause respiratory irritation. Although Polyether F-68 is generally safe, operators should avoid direct contact, especially in workplaces where dust is generated. When heated or burned, the product may release carbon monoxide, carbon dioxide, and other irritating or toxic vapors, so it should be kept away from high temperatures and ignition sources. In daily operation, establishing good ventilation conditions and personal hygiene habits are the foundation for ensuring safety. Personal Protective Equipment Requirements Protection AreaSpecific Requirements Respiratory SystemWhen dust or vapors are generated, wear an approved dust/particulate mask; use appropriate respiratory protection equipment when ventilation is insufficient. HandsWear protective gloves certified to chemical protection standards (e.g., nitrile rubber or chloroprene gloves), and check glove integrity regularly. Eyes/ceWear sealed chemical safety goggles or a full ce shield to prevent splashes and dust contact. Skin and BodyWear appropriate chemical protective work clothes to avoid exposed skin. Safe Operating Procedures Operations should be carried out in well-ventilated areas or environments with local exhaust ventilation to reduce the accumulation of dust or vapors. Eating, drinking, or smoking is prohibited during operation. After work, thoroughly wash hands and exposed body parts with soap and plenty of water immediately. When handling, minimize mechanical agitation and dust generation, and avoid inhaling dust. Work clothes should be washed regularly and not taken out of the work area. Eyewash stations and emergency showers should be available in the workplace. Storage Conditions Keep containers tightly closed and store in a cool (recommended temperature below 25°C), dry, and well-ventilated area. Keep away from high temperatures, heat sources, sparks, open flames, and incompatible substances such as strong oxidizers. The storage area should have an impermeable floor and be equipped with dikes or secondary containment to prevent spill spread. Avoid prolonged exposure to humid environments to prevent product caking or degradation. Store separately according to chemical storage regulations, and do not store with food, feed, or beverages. Emergency Procedures Emergency SituationResponse Measures InhalationMove the patient to fresh air and keep in a comfortable position; if respiratory irritation, coughing, or difficulty breathing occurs, seek immediate medical attention. Skin ContactImmediately remove contaminated clothing and wash thoroughly with plenty of soap and warm water; if skin irritation or rash occurs, seek medical attention. Eye ContactRinse immediately with running water or saline solution for at least 15 minutes; if wearing contact lenses, remove safely after 5 minutes of rinsing and continue rinsing; if irritation persists, seek ophthalmologist care. IngestionRinse mouth with water, do not induce vomiting; immediately drink 1-2 glasses of water to dilute; if unwell, call a poison control center or seek medical attention immediately. SpillageWear protective equipment, cover and collect with inert absorbent materials (sand, vermiculite, etc.), transfer to a chemical waste container; prevent entry into drains, surce water, or soil. Notes Although this product is generally safe, it is still classified as a hazardous substance under GHS; do not take it lightly. Empty containers may retain product hazards; must be cleaned or equivalently purified before disposal, and managed as hazardous waste. Product waste and contaminated containers must be disposed of by a qualified waste treatment agency; do not discharge into sewers, water sources, or soil. Keep containers tightly closed during transport to prevent damage, moisture, and excessive temperature fluctuations. According to the UN Recommendations on the Transport of Dangerous Goods, this product is not classified as dangerous goods (non-restricted). In case of fire, use water spray, alcohol-resistant foam, dry powder, or carbon dioxide depending on surrounding materials; avoid direct water jets to prevent dust dispersion. Firefighters must wear self-contained positive-pressure breathing apparatus and full protective clothing.

Question 8

How to use Polyether F-68? What is the recommended dosage?

Accepted Answer

The usage method of Polyether F-68 varies significantly depending on the application field. In biotechnology/cell culture, there is a clear typical dosage (0.5～3 g/L), while in pharmaceutical, cosmetic, and industrial applications, optimization based on the specific formulation is required. The database currently does not have a uniform fixed dosage. Detailed Description Polyether F-68 (Poloxamer 188) is a white to slightly yellow waxy solid with a melting point of 52~57°C. It is readily soluble in water and has an HLB value of 29, classifying it as a highly hydrophilic nonionic surctant. In practice, it usually needs to be pre-dissolved in the aqueous phase. Since the product is a solid and has some hygroscopicity, it is recommended to operate in a well-ventilated area. Weigh out the required amount and slowly add it to warm water (approximately 40~50°C) under continuous stirring until completely dissolved, preparing it as a stock solution of the desired concentration or directly adding it to the formulation system. This product features low foaming properties, good acid and alkali resistance, and stability in hard water, allowing it to maintain stable intercial activity even in high-shear processes such as stirring and homogenization. The critical micelle concentration (CMC) in aqueous solution is approximately 0.5 g/L (25°C), meaning it can exert its surce-active effect at very low concentrations. In applications requiring high emulsification efficiency, the use concentration usually needs to be r above the CMC value. The usage methods and dosages vary greatly across different application scenarios. In cell culture, a clear concentration range for use as a shear protectant has been established. In pharmaceutical preparations (such as intravenous emulsions and oral liquids) and personal care formulations, the dosage strictly depends on the drug properties, formulation type, oil-to-water ratio, and target product performance, requiring determination through experimental optimization. Technical Parameters Parameter ItemValueRemarks HLB Value29Highly Hydrophilic Cloud Point>100°C1% Aqueous Solution Critical Micelle Concentration (CMC)Approx. 0.5 g/L25°C Surce TensionApprox. 43 mN/m0.1% Aqueous Solution, 25°C Melting Point52~57°C— Active Content≥99.0%— pH Value (1% Aqueous Solution)5.0~8.0— Hydroxyl Value9~12 mg KOH/g— Foaming PropertyLow Foaming— SolubilityReadily Soluble in Water— AppearanceWhite to Slightly Yellow Waxy Solid— Application Recommendations 1. Biotechnology and Cell Culture (With Clear Recommended Dosage) Typical Use Concentration: 0.5～3 g/L (Data source: Guoli Chemical Product Database) Usage Method: Add the polyether F-68 powder directly to the culture medium, stir to dissolve, and then filter sterilize through a 0.22 μm filter membrane. Alternatively, prepare a high-concentration sterile stock solution and add it to the medium as needed. Mechanism of Action: Functions as a shear protectant, protecting sensitive cells from fluid mechanical damage during stirring and aeration, thereby improving cell viability and yield. 2. Pharmaceutical Industry Used as an emulsifier in intravenous emulsions, a solubilizer and stabilizer in oral liquid preparations, and a hydrophilic base in suppositories. The database currently does not have a uniform fixed dosage. The specific amount needs to be determined through formulation screening and process optimization based on the properties of the active pharmaceutical ingredient, the formulation type, and the target release characteristics. Generally, it must comply with the quality standards for Poloxamer 188 in the Chinese Pharmacopoeia and be used under GMP conditions. 3. Personal Care and Cosmetics Used as a mild nonionic emulsifier, dispersant, and foam stabilizer in formulations such as creams, lotions, shampoos, and body washes. The database currently does not have a uniform fixed dosage. It is recommended to start testing at 0.5%~5% (based on the total weight of the formulation) and adjust according to the requirements of the emulsification system, the type and content of oils and ts, and the desired product texture. Due to its low foaming property, it is particularly suitable for formulating low-foaming or easy-to-rinse cial cleansing products. 4. Industrial Auxiliaries Applied in formulations such as high-performance lubricants, low-foaming defoamers, mold release agents, and dispersants for coatings and inks. The database currently does not have a uniform fixed dosage. It needs to be determined through experimental optimization based on specific process requirements and the formulation system. Precautions Personal Protection: It is recommended to wear a dust mask, chemical safety goggles, and protective gloves (such as nitrile rubber gloves) during handling to avoid dust inhalation and skin/eye contact. According to GHS classification, this product is classified as Skin Irritation Category 2, Serious Eye Damage/Eye Irritation Category 2A, and Respiratory Irritation Category 3, with the signal word "Warning". Dissolution Operation: It is recommended to use warm water (40~50°C) with continuous stirring during dissolution. Avoid prolonged heating at high temperatures. The prepared aqueous solution should be used as soon as possible or appropriate preservative measures should be taken. Storage Conditions: Keep the container tightly closed and store in a cool (recommended temperature below 25°C), dry, and well-ventilated area. The product is hygroscopic; avoid prolonged exposure to humid environments to prevent caking. Pharmaceutical Grade Application: When used for injectable routes, products meeting pharmaceutical grade standards must be used. Sterile processing is required before injection, and strict adherence to relevant Good Manucturing Practices for pharmaceuticals is necessary.

Question 9

In which industries and processes is polyether F-68 mainly used?

Accepted Answer

Polyether F-68 is a multifunctional block polyether nonionic surctant, primarily applied in four major fields: the pharmaceutical industry, biotechnology, personal care products, and industrial auxiliaries. It is most renowned as an emulsifier for pharmaceutical-grade intravenous emulsions and as a shear protectant in cell culture. Detailed Description Polyether F-68 (Poloxamer 188) is a triblock copolymer composed of polyethylene oxide (PEO) and polypropylene oxide (PPO) (PEO-PPO-PEO). Its unique "hydrophilic-hydrophobic-hydrophilic" molecular structure endows the product with excellent amphiphilic properties. As a nonionic surctant, it demonstrates good tolerance to acidic and alkaline environments and hard water ions, maintaining stable intercial activity under harsh conditions. Additionally, it possesses low toxicity, low irritation, and good biocompatibility, making it one of the few synthetic surctants safe for human intravenous injection. In different application scenarios, the role of polyether F-68 varies: in the pharmaceutical field, it primarily functions as an emulsifier and solubilizer; in biotechnology, it acts as a physical protective barrier for cells; in personal care products, it serves as a mild emulsifier and dispersant; and in industrial applications, its lubricating, defoaming, and mold release properties are utilized. Below, its specific uses and process roles are elaborated by industry. Application Fields and Process Details I. Pharmaceutical Industry Polyether F-68 is a pharmaceutical excipient included in pharmacopoeias (Poloxamer 188), playing multiple key roles in drug formulations: Intravenous Injection Emulsions: As a high-efficiency emulsifier used in intravenous emulsions such as t emulsions and total parenteral nutrition, ensuring uniform droplet size, preventing phase separation and demulsification, and enhancing the long-term stability of the formulation. Oral Liquid Preparations: As a solubilizer, significantly improving the solubility and bioavailability of poorly soluble drugs (e.g., t-soluble vitamins, certain antifungal drugs). Eye Drops: Leveraging its mild and non-irritating properties, it is used as a solubilizer and stabilizer in ophthalmic formulations. Suppository Bases: Used as a hydrophilic suppository base to cilitate rapid drug release and absorption in body cavities. II. Biotechnology and Cell Culture In biopharmaceutical processes, polyether F-68 is an indispensable shear protectant . During the suspension culture of mammalian cells, agitation and sparging generate fluid shear forces that can easily damage sensitive cell membranes. When polyether F-68 is added to the culture medium, its molecules adsorb at the gas-liquid interce and on the cell membrane surce, forming a protective layer that effectively absorbs mechanical stress and prevents cell damage. The typical usage concentration is 0.5 to 3 g/L , significantly enhancing cell viability and target protein yield. It is widely used in production platforms for recombinant proteins and monoclonal antibodies, such as CHO cells and HEK293 cells. III. Personal Care Products and Cosmetics In the daily chemical field, polyether F-68, as a mild nonionic emulsifier and dispersant, is widely used in: Creams and Lotions: Providing a stable oil/water emulsion system, improving spreadability and skin feel, and imparting a fine texture to the product. Shampoos and Shower Gels: As a foam stabilizer and dispersant, enhancing the foam density and mildness of the cleansing formula. cial Cleansers: Dispersing active ingredients and fragrances while reducing the overall irritation of the formulation. IV. Industrial Auxiliaries Thanks to its low foaming and excellent lubricating properties, polyether F-68 is also widely used in industrial processing: High-Performance Lubricants: Used in metalworking fluids and precision machinery lubrication formulations. Low-Foam Defoamers: As a component in defoamers, suitable for industrial processes requiring foam control. Mold Release Agents: Improving mold release and surce finish in the molding of plastics, rubber, and composite materials. Dispersants for Coatings and Inks: Promoting uniform dispersion of pigments and fillers, enhancing system stability. Typical Process Parameters Reference Application FieldProcess RoleRecommended Dosage/Conditions Intravenous Injection EmulsionsEmulsifierAccording to formulation prescription, typically about 0.5% to 5% (w/w) of the oil phase Cell CultureShear Protectant0.5 to 3 g/L of culture medium Creams/LotionsO/W Emulsifier1% to 5% (w/w) of the total formulation Industrial Mold Release AgentRelease ComponentAdjusted according to specific process Precautions The purity standards of pharmaceutical grade and industrial grade products differ; for pharmaceutical use, specifications compliant with pharmacopoeia standards must be selected. During handling, protective gloves and goggles should be worn to avoid dust inhalation and eye contact (GHS classification: Skin irritation category 2, Eye irritation category 2A). The product should be stored sealed in a cool (recommended below 25°C), dry, and well-ventilated environment to prevent moisture absorption and caking. When preparing aqueous solutions, it is recommended to slowly sprinkle into stirred water to avoid clumping due to a large one-time addition.

Question 10

What are the physicochemical technical parameters of Polyether F-68?

Accepted Answer

Regarding the physicochemical technical parameters of Polyether F-68, the current database only provides basic physical descriptions, and there are no detailed numerical technical parameters available at this time. Detailed Description Polyether F-68 (Poloxamer 188) is a block polyether nonionic surctant. Its unique polyoxyethylene-polyoxypropylene-polyoxyethylene triblock structure endows it with excellent emulsifying, wetting, and dispersing capabilities. According to existing data, its appearance is a white to slightly yellow waxy solid, belonging to the category of nonionic surctants, with CAS number 9003-11-6. In terms of application characteristics, this product exhibits extremely high stability in aqueous solutions, good tolerance to acidic and alkaline environments and hard water ions, and can maintain stable intercial activity under harsh conditions. These characteristics make it an ideal choice for high-end fields such as pharmaceuticals, biotechnology, and personal care products. However, the product database provided this time does not include common numerical physicochemical parameters such as HLB value, cloud point, hydroxyl value, melting point, density, viscosity, or critical micelle concentration. Technical Parameters Based on currently available product data, the following parameter information can be confirmed: Parameter NameValue/Description Product TypeNonionic Surctant Appearance DescriptionWhite to Slightly Yellow Waxy Solid CAS Number9003-11-6 HLB ValueNot available Cloud PointNot available Hydroxyl ValueNot available Melting Point/Freezing PointNot available DensityNot available ViscosityNot available Critical Micelle Concentration (CMC)Not available To obtain the missing numerical parameters mentioned above, it is recommended to refer to the product's batch Certificate of Analysis (COA) or contact the technical support staff of Guoli Chemical. Application Suggestions Although some numerical parameters are missing, the application processes of Polyether F-68 in various fields are already quite mature. In biotechnology cell culture, it is used as a shear protectant at a typical concentration of 0.5 to 3 g/L. In the pharmaceutical field, it can serve as an emulsifier for intravenous injection emulsions or a solubilizer for oral formulations. In personal care products, it is used as a mild emulsifier and dispersant, with the optimal dosage typically determined through compatibility tests. Precautions When handling, follow the personal protective requirements in the safety data sheet and avoid generating dust. Although there are no specific physicochemical values at present, the product is classified as GHS Category 2 skin/eye irritant and may cause respiratory irritation. Ensure operation in a well-ventilated area and wear appropriate protective gloves and goggles.

Polyether F-68

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Property	Value
CAS No.	9003-11-6
Molecular Formula	HO(C2H4O)x(C3H6O)y(C2H4O)xH
Appearance	White to slightly yellow waxy solid
Ionic Type	Nonionic
Avg. Molecular Weight	7680~9510
Cloud Point	>100°C (1%aq. soln.)
Active Content	≥99.0%
pH Value(1%)	5.0~8.0
pH Value(5%)	5.0~7.5
Iodine Value	≤1 g I₂/100g
Solubility	Readily soluble in water
Surface Tension	~43 mN/m (0.1%aq. soln., 25°C)
CMC	~0.5 g/L (25℃)
Acid Value	≤0.5
Saponification Value	≤0.5 mg KOH/g
Hydroxyl Value	9~12 mg KOH/g
Moisture	≤0.5
Density	1.00~1.10
Kinematic Viscosity	N/A (solid)
Refractive Index	1.456 (20°C, liquid state)
Flash Point	>260°C
Hygroscopicity	Hygroscopic
Chemical Stability	Stable at room temperature; avoid prolonged exposure to strong acids/alkalis and high temp
Amine Value	≤0.5 mg KOH/g
Tertiary Amine Content	0%
Foam Property	Low foam
Alkali Resistance	Good
Unsaturation	≤0.03 mmol/g
Viscosity	~500 mPa·s (molten)
Melting Point	52~57°C
Free Phosphoric Acid	0%
Monoester Content	0%
Diester Content	0%
Low Shear Viscosity	N/A (solid)
Solid Content	≥99.0%
Free Alcohol	≤0.5%
Phosphate Monoester	0%
Phosphate Diester	0%
Bound Phosphorus	0% (as P₂O₅)
Heavy Metal	≤10 mg/kg (as Pb)
Arsenic	≤2 mg/kg

Polyether F-68

Product Details

Applications

Properties

Safety

Product Overview

Performance Features

Application Guidelines

Packaging and Storage

Polyether/Poloxamer Applications

Product Properties

Safety

GHS

Handling

Storage

First Aid

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