Question 1

Is lauric acid polyoxyethylene ether LAE-4 harmful to the human body? Does it have an impact on the environment?

Accepted Answer

Lauric acid polyoxyethylene ether LAE-4 is a low-toxicity nonionic surctant. Under normal use, it is basically harmless to the human body, but prolonged skin contact should be avoided. For the environment, this product is biodegradable, but large spills may still cause temporary adverse effects on aquatic organisms. Detailed Explanation Lauric acid polyoxyethylene ether LAE-4 (PEG-4 Laurate) is a nonionic surctant with high safety. According to the product safety data sheet, this product is classified as a low-toxicity chemical and has no significant health hazards under normal use conditions. It is not classified as a flammable liquid or solid and has no explosion hazard. This makes it widely used in multiple industries such as personal care, textile auxiliaries, and pesticide formulations. However, despite its good overall safety, long-term or repeated contact with this product may cause dry skin, detting, or mild irritation. In addition, if it decomposes at high temperatures, it may produce irritant or harmful fumes such as carbon monoxide and carbon dioxide. Therefore, excessive operating temperatures should be avoided during handling. From the perspective of exposure routes, skin contact and eye contact are the two most concerning scenarios. Especially for eye contact, immediate thorough rinsing with plenty of flowing clean water for at least 15 minutes and medical attention are required. Effects on the Human Body via Different Exposure Routes Exposure RouteHazard LevelEmergency Treatment Skin ContactLow risk — Prolonged or repeated contact may cause dryness, detting, or mild irritationRemove contaminated clothing, rinse with plenty of running water and soap for at least 15 minutes; seek medical attention if redness or pain occurs Eye ContactModerate risk — May cause eye irritationImmediately lift eyelids, rinse with plenty of water or saline for at least 15 minutes; be sure to seek medical examination InhalationLow risk — Almost no inhalation risk under normal use; decomposition fumes at high temperatures may be harmfulMove to fresh air; if breathing is difficult, give oxygen and seek medical attention IngestionCaution needed — Not intended for normal ingestionRinse mouth with water, do NOT induce vomiting; if conscious, drink a small amount of water to dilute, seek medical attention immediately Environmental Impact Assessment From an ecological perspective, lauric acid polyoxyethylene ether LAE-4 is biodegradable, meaning it does not accumulate in the environment for a long time under normal use and discharge conditions. However, in the event of a large spill entering water bodies (e.g., rivers, lakes), it may cause temporary adverse effects on aquatic organisms. Therefore, it is essential to prevent the product from entering drainage systems, surce water, and groundwater. Regarding waste disposal, waste products and contaminated containers should be disposed of in accordance with national and local hazardous waste management regulations. High-temperature incineration is recommended, with appropriate exhaust gas purification equipment to minimize negative impacts on the environment. Application Recommendations Although LAE-4 has high safety, the following points should still be noted in practical applications: operators should wear chemical safety protective gloves and goggles; maintain good ventilation in the workplace; thoroughly wash hands and exposed skin after operation; avoid operating at excessively high temperatures to prevent decomposition. The recommended storage temperature for this product is 5°C to 35°C, with a shelf life of two years under suitable storage conditions. Precautions This product is non-toxic and not flammable, but it is not edible and should be kept away from children. Avoid mixing with incompatible substances such as strong oxidizers, strong acids, and strong bases. Empty containers may contain residual product vapor or droplets; do not discard or reuse arbitrarily. If used as a raw material in personal care products, the final product's safety must be assessed according to relevant regulations. When used in large quantities, ecological risk assessment is recommended to ensure safe discharge after wastewater treatment.

Question 2

What to do if problems occur during the use of Lauryl Polyoxyethylene Ether LAE-4? How to obtain technical support?

Accepted Answer

If problems occur during the use of LAE-4, first conduct targeted troubleshooting based on the specific abnormal phenomenon. For emergencies, follow safety instructions. For technical difficulties, contact the technical team of Guoli Chemical for professional support. Common Problems and Troubleshooting Guide As a nonionic surctant, Lauryl Polyoxyethylene Ether LAE-4 may encounter several typical problems in practical applications. It is recommended to troubleshoot step by step as follows: 1. Unsatisctory emulsification effect or emulsion stratification: First, check whether the addition amount of LAE-4 is within a reasonable range (usually 5% to 20% of the oil phase mass, specific adjustment based on the formulation system). Second, confirm whether the oil-water ratio and homogenization process parameters (such as stirring speed, time, temperature) are compatible. The HLB value of LAE-4 is inclined towards the lipophilic end. If emulsification of an oil phase with a higher HLB requirement is needed, it is recommended to combine with a nonionic surctant of high HLB value. Excessive water hardness may also affect emulsion stability. 2. Abnormal product appearance (turbidity, stratification, precipitation): The normal appearance of LAE-4 should be a colorless to light yellow transparent liquid. If the product itself appears turbid or stratified, it may be due to improper storage temperature. The recommended storage temperature is 5°C to 35°C. Long-term extreme temperatures may cause product stratification or deterioration. It is recommended to restore the product to room temperature (15°C to 25°C) and stir evenly before observation. If the transparent state cannot be restored, or if odor or significant color deepening occurs, the product may have exceeded its shelf life or storage conditions are not up to standard. It should be used only after passing inspection. 3. Formulation compatibility issues: Although LAE-4 has good compatibility with anionic, cationic, and other nonionic surctants, interactions may still occur in specific formulations. If flocculation, precipitation, or decreased transparency occurs, it is recommended to check the ionic nature and addition order of each component in the formulation one by one. A small-scale compatibility test can be performed first to confirm no conflict between components. 4. Poor cleaning or wetting effect: Confirm whether the usage concentration is sufficient, and check the pH value and temperature conditions of the system. LAE-4 has acid and alkali resistance, but long-term use under extreme strong acid or strong alkali conditions still requires stability evaluation. The operating temperature can be appropriately increased (not exceeding the product decomposition temperature) to enhance wetting and spreading performance. Technical Parameters ParameterDescription Product typeNonionic surctant Chemical namePolyoxyethylene (4) laurate (PEG-4 Laurate) CAS number9004-81-3 AppearanceColorless to light yellow transparent liquid IonicityNonionic Chemical stabilityResistant to acid, alkali, and hard water Recommended storage temperature5°C to 35°C Shelf lifeTwo years (must pass inspection if beyond shelf life before use) Application Recommendations To maximize the avoidance of usage issues, it is recommended to conduct small-scale experiments before formal production to verify the compatibility of LAE-4 with the formulation system. Pay attention to the following points during use: Stir LAE-4 evenly before feeding to ensure product uniformity Control the operating temperature not too high to avoid decomposition or generation of harmful volatiles Avoid direct contact with strong oxidizing agents Maintain good ventilation in the operating area, seal the container promptly after use to prevent moisture absorption How to Obtain Technical Support If you encounter problems during the use of LAE-4 that cannot be resolved through the above troubleshooting, or need more professional technical guidance, Guoli Chemical provides the following technical support channels for users: Formulation optimization support: Provide emulsifier combination recommendations and usage parameter optimization solutions for specific application scenarios Product testing service: Perform quality inspection and evaluation of products suspected of deterioration or abnormalities Customized solutions: Provide personalized product recommendations and technical support based on your process conditions and needs It is recommended to contact the technical department directly through the contact information (telephone, email, or online customer service) published on the official website of Hai'an Guoli Chemical Co., Ltd., or contact the sales manager serving you, to obtain the most timely and accurate technical response. When contacting, please prepare the product batch number, specific description of the problem, and relevant formulation or process parameters, which will help the technical team quickly locate the issue. Precautions If skin or eye contact occurs, immediately follow the emergency measures in the safety instructions (rinse with plenty of water for at least 15 minutes) and seek medical attention as appropriate Although the product is of low toxicity, it is still recommended to wear chemical safety protective gloves and goggles during operation Spills should be collected with inert absorbent materials into a sealed container and disposed of harmlessly in accordance with local regulations Empty containers may contain residual product vapor or droplets and should not be discarded arbitrarily or used for other purposes Our company database does not have directly publicly available technical support hotline numbers. Please refer to the official website of Guoli Chemical or the product accompanying manual for specific contact information

Question 3

How to purchase Lauric Acid Polyoxyethylene Ether LAE-4? What is the minimum order quantity?

Accepted Answer

Lauric Acid Polyoxyethylene Ether LAE-4 needs to be ordered directly from the sales team of Haian Guoli Chemical Co., Ltd. The minimum order quantity is not publicly available; please contact the official source for details. Detailed Description Lauric Acid Polyoxyethylene Ether LAE-4 (CAS No.: 9004-81-3) is one of the core products of Guoli Chemical. As a high-performance nonionic surctant, it is widely used in various industries such as personal care, textiles, and metal processing. According to the official database of Guoli Chemical, this product currently does not support online ordering. To obtain the actual product, latest quotation, and exact minimum order quantity (MOQ), you need to actively contact the sales team of Guoli Chemical. Product prices are affected by various ctors such as raw material market fluctuations, purchase quantity, payment terms, and logistics methods. The data in the database is for reference only and does not represent real-time transaction prices. I cannot directly generate orders or provide the exact minimum order quantity. Please contact the sales department directly through the official website, corporate email, or officially announced contact number of Haian Guoli Chemical Co., Ltd. They will provide you with detailed product specifications, safety data sheets (SDS), current quotations, and specific ordering procedures. Existing Product and Packaging Information Product NameLauric Acid Polyoxyethylene Ether LAE-4 Product StatusColorless to light yellow transparent liquid (active content ≥99.0%) Available Packaging50kg plastic drum200kg plastic drumIBC tote tank Price ReferenceNone Minimum Order QuantityNone Procurement ChannelContact Guoli Chemical sales team Contact Suggestions Before contacting the sales team, it is recommended that you clarify the following information for more efficient quotation and service: the purchase quantity you need, the target application field (such as personal care products, industrial cleaning, etc., to cilitate more precise formulation recommendations), and your preferred packaging specification (50kg/200kg drum or IBC tote tank). Guoli Chemical transports according to general chemical regulations and can provide quality assurance within the product shelf life (two years). Precautions Although this product is classified as a low-toxicity chemical, large-scale procurement and storage require ensuring a dry and ventilated warehouse, away from sources of fire and heat. The recommended storage temperature is 5°C to 35°C. After procurement, it should be used in accordance with standard chemical operating procedures, avoiding prolonged contact with skin and eyes.

Question 4

Does Lauryl Polyoxyethylene Ether LAE-4 meet environmental requirements? Can a test report be provided?

Accepted Answer

Lauryl Polyoxyethylene Ether LAE-4 has good basic environmental characteristics and is biodegradable. However, for formal test reports, please contact the sales department of Guoli Chemical separately. Detailed Explanation According to the ecological information in the product database of Hai'an County Guoli Chemical Co., Ltd., Lauryl Polyoxyethylene Ether LAE-4 (PEG-4 Laurate) is biodegradable, which is an important indicator for evaluating its environmental performance. As a non-ionic surctant, it can be gradually decomposed by microorganisms in the natural environment without causing persistent cumulative pollution, thus conforming to the mainstream trend of green chemistry and environmentally friendly formulations. From a safety perspective, this product is a low-toxicity chemical, not a flammable liquid or solid, with no explosion hazard, and poses no significant harm to operators and the environment under normal use conditions. However, it should be noted that large spills entering water bodies can cause temporary adverse effects on aquatic organisms. Therefore, strict measures should be taken during use to prevent direct discharge into sewers, surce water, and groundwater. Regarding test reports, as a professional surctant manucturer, Guoli Chemical can provide product inspection reports (COA) and related technical data upon customer request. This database contains detailed technical parameters of the product (such as acid value, saponification value, moisture, heavy metal content, etc.), but officially stamped third-party test reports or environmental certifications need to be obtained directly by contacting Guoli Chemical's sales or technical department. Technical Parameters The following are some parameters related to environmental protection and compliance from the database, provided for preliminary reference: Parameter ItemSpecificationDescription BiodegradabilityBiodegradableMeets basic requirements for environmentally friendly formulations Heavy Metals≤10 ppmSatisfies safety standards for daily chemicals and industrial cleaning Arsenic (As)≤2 ppmStrict control of harmful element content Moisture≤1.0%High purity, reduces risk of side reactions Active Content≥99.0%High effective ingredient, reduces introduction of impurities Free Alcohol≤1.0%Relatively complete reaction, fewer by-products Application Suggestions Since LAE-4 is biodegradable and has low toxicity, it is especially suitable for formulation areas with high environmental requirements: Personal Care Products: For preparing creams, shampoos, etc., that meet green label or EU REACH requirements. Industrial Cleaning: Used in biodegradable cleaning agent formulations to meet wastewater treatment requirements. Pesticide Formulations: As an environmentally friendly emulsifier to reduce impact on soil and water bodies. To prove product compliance to end customers or certification bodies, it is recommended to obtain the following documents: Certificate of Analysis (COA), Material Safety Data Sheet (MSDS), and third-party ROHS\/REACH test reports (if specific export requirements exist). Precautions The database currently does not have an existing environmental test report available for direct download. Formal reports need to be requested from the sales department of Guoli Chemical. Although biodegradable, spill handling procedures must still be followed during operation, and direct discharge into environmental waters is strictly prohibited. For waste disposal, high-temperature incineration is recommended, equipped with exhaust gas purification devices, in compliance with national and local hazardous waste management regulations.

Question 5

What advantages does polyoxyethylene laurate LAE-4 have compared to other similar products?

Accepted Answer

With its unique 4 EO addition number, polyoxyethylene laurate LAE-4 offers significant advantages over high-EO number similar products (such as LAE-9) in terms of excellent oil solubility, low-foaming properties, and efficient wetting and spreading ability. Detailed Explanation Compared to other products in the same polyoxyethylene laurate series (such as another product from Guoli Chemical, LAE-9), the core advantage of LAE-4 stems from its shorter ethylene oxide (EO) chain in the molecular structure (n≈4). This structural feature controls its HLB value at around 9.0, giving the product a unique lipophilic-hydrophilic balance. Therefore, LAE-4 is "easily soluble in oil, dispersible in water". This characteristic makes it r more effective than high-EO number water-soluble products in preparing water-in-oil (W/O) emulsions and solubilizing oil-soluble components. Secondly, LAE-4 exhibits excellent wetting and spreading ability and low surce tension (approximately 30 mN/m). In industrial cleaning and pesticide formulations, it can rapidly reduce the intercial tension of oil stains or hydrophobic surces, allowing the working solution to quickly spread and penetrate, achieving deep cleaning and target wetting effects that are difficult for high-EO number products to achieve. At the same time, as a low-foaming nonionic surctant, LAE-4 has irreplaceable advantages in industrial scenarios requiring quick foam breaking or minimal foam (such as metalworking fluids and high-pressure spray cleaning). Additionally, LAE-4 retains the general advantages of this product series from Guoli Chemical: excellent chemical stability (resistance to acids, alkalis, and hard water) and versatile compatibility, allowing perfect compounding with various surctants such as anionic, cationic, and nonionic. This broad adaptability, combined with its special lipophilic and low-foaming properties, enables its use as a supertting agent in personal care products, providing a unique moisturizing feel to the skin, which many hydrophilic emulsifiers lack. Technical Parameters Below are the core technical parameters of LAE-4, directly reflecting its performance advantages: Parameter Item LAE-4 Typical Value Performance Advantage Interpretation Ethylene Oxide Addition Number (n) ≈ 4 Imparts the product with lipophilic and low-foaming properties HLB Value 9.0 lls within the optimal range for water-in-oil (W/O) emulsifiers and wetting agents, balancing emulsifying and wetting capabilities Appearance (25℃) Colorless to light yellow transparent liquid Very conducive to formulating transparent or translucent formulas with a clean appearance Surce Tension (1% Aqueous Solution, 25℃) Approximately 30 mN/m The low surce tension ensures excellent wetting and spreading on hard surces and brics Solubility Easily soluble in oil, dispersible in water Can efficiently emulsify oily components, suitable for high oil phase systems Foaming Properties Low foaming Easy to rinse off, meets stringent requirements for low or no foam in industrial processing Active Content ≥ 99.0% High purity ensures high efficiency and excellent formula stability Application Suggestions When selecting surctants, you can leverage the unique advantages of LAE-4 according to specific formulation needs: Emulsifying Oily Components: If you need to emulsify a high proportion of oils, mineral oils, or synthetic esters and desire a fine and stable emulsion, LAE-4 is a better choice than high-EO number ethers. It is recommended for use as a primary or co-emulsifier. Low-Foam Formulation Systems: When formulating metalworking fluids, high-pressure cleaners, or personal care products requiring easy rinsing, the low-foaming property of LAE-4 can simplify the formulation, eliminating the need for large amounts of additional defoamers. Improving Wetting and Spreading: In pesticide emulsifiable concentrates, inks, or hard surce cleaners requiring rapid surce wetting, adding LAE-4 can significantly accelerate product diffusion speed and coverage area. Supertting Agent in Personal Care: Utilizing its oil solubility, LAE-4 can be added as a supertting agent to shampoos or body washes. It will precipitate and adsorb onto the skin and hair during rinsing, providing a soft, non-drying unique skin feel that fully water-soluble surctants cannot achieve. Precautions Understanding Solubility Characteristics: Please pay attention to the product's property of "easily soluble in oil, dispersible in water." Directly adding a large amount to the aqueous phase may cause uneven dispersion. It is recommended to pre-mix with the oil phase or a suitable co-solvent before adding to the water phase. Storage: The product has a shelf life of two years. For optimal performance, store at the recommended temperature (5℃ to 35℃) and avoid prolonged exposure to extreme temperatures to prevent separation or deterioration. Safe Handling: Although toxicity is low, prolonged direct contact may cause skin dryness and detting. Wear gloves and safety goggles during handling and ensure good ventilation.

Question 6

How to store Lauryl Polyoxyethylene Ether LAE-4? What is the shelf life?

Accepted Answer

Lauryl Polyoxyethylene Ether LAE-4 should be stored sealed in a dry and ventilated warehouse, with a recommended temperature of 5℃ to 35℃ and a shelf life of two years. Detailed Description Lauryl Polyoxyethylene Ether LAE-4 is a non-ionic surctant with stable chemical properties. It is not flammable or explosive and can be stored and transported according to general chemical regulations. Nevertheless, proper storage is crucial for maintaining its core properties such as emulsification and solubilization. Improper storage may lead to product stratification, moisture absorption, deterioration, or performance degradation. Under normal storage conditions, this product exhibits excellent chemical stability and is resistant to acids, alkalis, and hard water. However, be aware that if decomposed at high temperatures, it may produce irritating or harmful fumes such as carbon monoxide and carbon dioxide. Therefore, the storage environment must be kept away from ignition sources and heat sources, and prolonged exposure to extreme temperatures should be avoided. Summary of Storage Conditions Storage ctorSpecific Requirements Environmental ConditionsIn a dry, well-ventilated warehouse, away from ignition sources and heat sources Container StatusKeep the container tightly sealed to prevent moisture absorption and entry of foreign matter Recommended Temperature5℃ to 35℃ Prohibited ActionsAvoid mixing with incompatible substances such as strong oxidizers, strong acids, and strong bases Shelf LifeTwo years (under the above storage conditions) Handling After ExpiryAfter the shelf life, it must be tested and qualified before further use Application Recommendations It is recommended that users inspect the appearance of the product before use (it should be a colorless to light yellow transparent liquid). If abnormalities such as stratification, turbidity, or off-odor occur, quality testing should be performed before deciding on use. After opening, any unused product should be sealed promptly to avoid prolonged exposure to air and moisture absorption. For bulk purchasers, it is recommended to follow the first-in, first-out principle and use earlier batches within the shelf life first. Precautions Avoid prolonged exposure to extreme temperatures (too high or too low) to prevent product stratification or deterioration. Empty containers may contain residual product vapor or droplets. Do not discard or reuse them arbitrarily; dispose of them according to relevant regulations. Do not discharge the product into drainage systems, surce water, or groundwater. In case of major leakage, build dikes to contain and prevent spread.

Question 7

What safety precautions should be taken when using Lauryl Polyoxyethylene Ether LAE-4?

Accepted Answer

Lauryl Polyoxyethylene Ether LAE-4 is a low-toxicity nonionic surctant. Under normal use conditions, it poses no significant health hazards, but standard chemical operating procedures must be followed, with attention to safety precautions such as protection, storage, leakage, and emergency response. Detailed Description Lauryl Polyoxyethylene Ether LAE-4 (Polyoxyethylene (4) laurate) is a nonionic surctant with high safety. It is not classified as a flammable liquid or solid and has no explosion hazard. In conventional industrial and personal care applications, its risk to human health is low. However, prolonged or repeated contact may cause skin dryness, detting, or mild irritation. If decomposed at high temperatures, it may produce irritating or harmful fumes such as carbon monoxide and carbon dioxide, so operating temperatures should not be too high. This product has good compatibility with anionic, cationic, and other nonionic surctants. It is resistant to acids, alkalis, and hard water. Under normal storage conditions (5°C to 35°C, dry and ventilated, container sealed), the shelf life is two years. After the shelf life, it can only be used after passing inspection. Safe Operation and Personal Protection Operators should wear chemical safety gloves, protective goggles, and work clothes. The operation area should be well-ventilated; if ventilation is insufficient, local exhaust measures should be taken. Avoid prolonged or repeated contact with skin and eyes. Wash hands and exposed skin thoroughly after operation. Eating, drinking, and smoking are prohibited in the workplace. When transferring or conveying this product, take anti-leakage measures and use anti-static equipment. Empty containers may contain residual product vapor or droplets. Do not discard or reuse them arbitrarily. Storage Conditions Store and transport according to general chemical regulations. Store in a dry, well-ventilated warehouse, away from fire and heat sources. Keep containers tightly closed to prevent moisture absorption and foreign matter entry. Avoid mixing with incompatible materials such as strong oxidizers, strong acids, and strong bases. Recommended storage temperature: 5°C to 35°C. Avoid prolonged exposure to extreme temperatures to prevent product stratification or deterioration. Under the above storage conditions, the shelf life of the product is two years. Emergency Response Skin Contact Immediately remove contaminated clothing. Rinse the affected area thoroughly with plenty of running water and soap for at least 15 minutes. If redness, swelling, pain, or persistent irritation occurs, seek medical attention immediately. Eye Contact Immediately lift the eyelids and rinse thoroughly with plenty of running water or saline for at least 15 minutes. During rinsing, rotate the eyeballs to ensure thorough cleaning of the conjunctival sac. Seek medical examination without delay. Inhalation Move the affected person to fresh air immediately and keep the respiratory tract unobstructed. If breathing difficulties occur, administer oxygen and seek medical attention. If breathing stops, perform artificial respiration immediately and call for emergency medical assistance. Ingestion Rinse the mouth with water immediately. Do not induce vomiting. If the victim is conscious, give a small amount of water to dilute the stomach contents. Seek medical attention promptly, and bring this safety instruction or product label for reference. Spill Response Small spills: Cover with inert absorbent material (e.g., sand, vermiculite) and collect into a closed container for disposal as waste. Large spills: Immediately shut off the leakage source, construct dikes or dig pits to contain the spill, and prevent it from entering sewers, surce water, or groundwater. Cover the spill liquid with foam to suppress vapor generation. Use explosion-proof pumps to transfer to dedicated collection containers. Set up warning signs in the spill area, and prohibit entry by non-emergency personnel. Dispose of the spill and contaminated cleaning materials harmlessly according to local regulations. Fire Response This product is not flammable, but it may decompose when heated in a fire, producing harmful gases. Suitable extinguishing media: water spray, alcohol-resistant foam, dry powder, carbon dioxide. Firefighters must wear self-contained positive-pressure breathing apparatus and full fireproof and chemical-resistant clothing. Move containers from the fire area to a safe location if possible; if not, cool exposed containers with water spray. Ecological and Waste Disposal This product is biodegradable, but large spills into water bodies may cause temporary adverse effects on aquatic organisms. Prevent it from entering drainage systems, surce water, and groundwater. Dispose of waste product and contaminated containers in accordance with national and local hazardous waste management regulations. High-temperature incineration with appropriate exhaust gas purification is recommended. Notes The above safety information is based on product safety technical data provided by Haian Guoli Chemical Co., Ltd. For different application scenarios, it is recommended to conduct safety assessments in conjunction with specific formulations and process conditions. If in doubt, consult the Guoli Chemical technical support team for further guidance.

Question 8

How to use Lauryl Alcohol Ethoxylate LAE-4? What is the recommended dosage?

Accepted Answer

How to use Lauryl Alcohol Ethoxylate LAE-4? What is the recommended dosage? Detailed Description Lauryl Alcohol Ethoxylate LAE-4 (PEG-4 Laurate) is a nonionic surctant, appearing as a colorless to light yellow transparent liquid with an HLB value of approximately 9.0. It is an oil-soluble emulsifier that disperses in water. The basic operation method is: add it to the oil phase component in advance, heat to 40~60°C and stir evenly, then emulsify with the water phase. As the freezing point of this product is below -5°C, it maintains good fluidity even at low temperatures, making it convenient for direct use and weighing. LAE-4 has the characteristics of acid resistance, alkali resistance, and hard water resistance, and can be used in a wide range of pH conditions and water quality environments. It has low foam, good chemical stability, and good compatibility with anionic, cationic, and other nonionic surctants. Therefore, it is often used in combination with other surctants to achieve synergistic effects. For example, in personal care formulations, it is often paired with hydrophilic emulsifiers with higher HLB values (such as PEG-40 hydrogenated castor oil) to adjust the overall HLB value of the system for optimal emulsification effects. Operational precautions: This product may hydrolyze under strong acid or strong alkali conditions. It is recommended to control the system pH within the range of 5~9. Since the cloud point is approximately 32°C (1% aqueous solution), turbidity or phase separation may occur in high-temperature aqueous systems. It is recommended to control the process temperature during preparation or compound with other high cloud point surctants to improve the temperature resistance of the system. Technical Parameters Parameter ItemValueRemarks HLB Value9.0Oil-soluble emulsifier, dispersible in water AppearanceColorless to light yellow transparent liquid— Active Content≥99.0%— Monoester Content≥98.0%Diester content ≤1.0% pH Value (1% Aqueous Solution)5.0~7.0Weakly acidic to neutral Cloud Point (1% Aqueous Solution)Approx. 32°CTurbidity may occur above this temperature SolubilityEasily soluble in oil, dispersible in water— Acid Value≤5.0 mgKOH/g— Saponification Value145~165 mgKOH/g— Hydroxyl Value140~160 mgKOH/g— Density (25°C)Approx. 0.97 g/cm³— Freezing Point<-5°CGood low-temperature fluidity Flash Point>150°CNon-flammable Foam CharacteristicsLow foam— Moisture Content≤1.0%— Application Recommendations The Guoli Chemical product database does not currently include official recommended dosages for various application fields. The following are general reference dosages based on the HLB value (9.0) of this product and industry practical experience. The actual dosage needs to be determined through experiments based on the specific formulation system. Application FieldReference Dosage (wt%)Key Usage Points Personal Care (Creams/Lotions)2.0~5.0%Add to oil phase, heat with oil phase components at 70~75°C until melting, then emulsify Shampoo/Shower Gel (Solubilization/Enrichment)0.5~2.0%As a tliquoring agent, add to the system at the cooling stage (approx. 40°C) Metalworking Fluids (Emulsifier)3.0~8.0%Mix with base oil to prepare emulsified oil concentrate; dilute to 5~10% working fluid before use Pesticide Formulations (Emulsifier)5.0~12.0%Combine with other emulsifiers, add to oil phase or solvent and stir until dissolved Industrial Hard Surce Cleaning1.0~5.0%Combine with anionic surctants to enhance degreasing effect Leather tliquoring Agent5.0~15.0%Use as a component of tliquoring agent, mix with other oils and ts before use Paints/Inks (Wetting/Dispersion)0.3~2.0%Add before grinding to aid pigment dispersion Textile Auxiliaries (Antistatic/Softening)2.0~6.0%Prepare working fluid, treat bric by dipping or padding process Important Note: The above dosages are general reference values for industry formulations, not official recommended dosages from Guoli Chemical. In actual production, the optimal dosage should be determined through small-scale and pilot-scale experiments based on the specific formulation system, target performance, and process conditions. For detailed technical support on specific application formulations, it is recommended to contact the Guoli Chemical technical team for professional guidance. Precautions Pre-dissolve in Oil Phase: This product is an oil-soluble surctant. It should be dissolved in the oil phase or solvent first before use; direct addition to the water phase is not recommended. Temperature Control: The cloud point is approximately 32°C. In high-temperature aqueous systems (exceeding the cloud point), turbidity or phase separation may occur. Control the preparation temperature appropriately or compound with high cloud point emulsifiers. Acidity/Alkalinity: Hydrolysis may occur under strong acid or strong alkali conditions. It is recommended to use at pH 5~9 to ensure optimal stability. Synergistic Combination: Using HLB 9.0 alone may not be sufficient to form a stable O/W emulsion. It is recommended to combine with high HLB emulsifiers (such as PEG-40 hydrogenated castor oil) to adjust the system HLB value. <

Question 9

In which industries and processes is lauric acid polyoxyethylene ether LAE-4 mainly used?

Accepted Answer

Lauric acid polyoxyethylene ether LAE-4 is widely used in seven major industries including personal care, textiles, metal processing, pesticides, industrial cleaning, leather, and coatings and inks, playing a key role as an efficient emulsifier, solubilizer, and wetting dispersant. Detailed Description Lauric acid polyoxyethylene ether LAE-4 (PEG-4 Laurate) is an excellent performance nonionic surctant, appearing as a colorless to light yellow transparent liquid. With its outstanding emulsifying ability, solubilizing performance, wetting and spreading properties, as well as chemical stability against acids, alkalis, and hard water, it is widely used in many industrial fields. It has good compatibility with anionic, cationic, and other nonionic surctants, offering high formulation flexibility. In the personal care industry, LAE-4 is mainly used as an emulsifier, solubilizer, and emollient in creams, lotions, shampoos, and body washes, helping to form stable and fine oil/water emulsions, enhancing the skin feel and texture of the products. In the textile industry, it is used as an antistatic agent and softener to improve fiber processing performance and impart excellent touch and smoothness to brics. In the industrial field, LAE-4 plays a dual role of emulsification and lubrication in metalworking fluids (such as cutting fluids and grinding fluids), improving metal processing accuracy; it enhances the ability to emulsify and remove oil stains in industrial hard surce cleaners; in pesticide formulations (emulsifiable concentrates and aqueous emulsions), it acts as an emulsifier to help uniform dispersion and penetration of active ingredients; in addition, it can be used as a leather tliquoring agent to make leather soft and plump, and as a wetting dispersant in coatings and inks to promote uniform distribution of pigments and fillers. Application Fields at a Glance Industry FieldApplication Process/ProductFunctional Role Personal CareCreams, lotions, shampoos, body washesEmulsifier, solubilizer, emollient Textile IndustryFiber processing, bric finishingAntistatic agent, softener Metalworking FluidsCutting fluids, grinding fluids, etc.Emulsifier, lubricant Pesticide FormulationsEmulsifiable concentrates, aqueous emulsionsEmulsifier, enhances spreading and penetration Industrial CleaningHard surce cleanersEmulsification for dirt removal, degreasing Leather IndustryLeather tliquoring processtliquoring agent, imparts softness and fullness Coatings and InksPigment dispersion, system stabilityWetting dispersant, improves leveling Application Recommendations LAE-4 is a low-toxicity chemical with no significant health hazards, non-flammable and non-explosive, and has high safety in use. In actual formulations, it is recommended to reasonably combine with other surctants based on the HLB requirements of the target system to achieve optimal synergistic effects. Due to its resistance to acids, alkalis, and hard water, it is suitable for various water quality conditions and production environments, with a wide range of adaptability. Precautions It is recommended to wear chemical protective gloves and safety glasses during operation, and maintain good ventilation. Avoid prolonged contact with skin and eyes, and wash hands thoroughly after operation. Recommended storage temperature is 5°C to 35°C, keep the container tightly closed, away from fire and heat sources. Store separately from incompatible substances such as strong oxidizers, strong acids, and strong bases. Under proper storage conditions, the shelf life is two years. After expiration, inspection and qualification are required before use.

Question 10

What are the physical and technical parameters of Lauric Acid Polyoxyethylene Ether LAE-4?

Accepted Answer

Lauric Acid Polyoxyethylene Ether LAE-4 is a nonionic surctant with an HLB value of approximately 9.0. At room temperature, it is a colorless to pale yellow transparent liquid with the characteristics of low foaming, easy solubility in oil, and dispersibility in water, with balanced comprehensive physical and chemical properties. Detailed Description Lauric Acid Polyoxyethylene Ether LAE-4 (CAS No.: 9004-81-3) is a high-quality nonionic surctant produced by Guoli Chemical, with the chemical name Polyoxyethylene (4) Laurate (PEG-4 Laurate). The combination of lauric acid lipophilic groups and 4 EO hydrophilic units in its molecular structure gives the product an oil-water balance with an HLB value of approximately 9.0, making it particularly outstanding in water-in-oil (W/O) emulsification systems. The active content of this product is ≥99.0%, the monoester content is ≥98.0%, and the free alcohol content is ≤1.0%, indicating high purity and low by-products. Its acid value is ≤5.0 mgKOH/g, saponification value is 145~165 mgKOH/g, and hydroxyl value is 140~160 mgKOH/g, providing precise feed calculation basis for formulation engineers. The product has a melting point below -5℃ and a flash point above 150℃, ensuring good safety under normal operating temperatures. In terms of emulsification performance, the surce tension of this product is approximately 30 mN/m, and the critical micelle concentration (CMC) is approximately 30 mg/L, allowing it to rapidly reduce oil/water intercial tension and form stable, fine emulsions. Its cloud point is approximately 32℃ (1% aqueous solution), which means it is a low cloud point product, and attention should be paid to the effect of temperature on water solubility during use. The foam characteristics are low foaming, making it particularly suitable for applications requiring foam suppression or easy rinsing. Technical Parameters Parameter Item Specification Value Remarks Chemical NamePolyoxyethylene (4) Laurate (PEG-4 Laurate)— CAS No.9004-81-3— Molecular FormulaCH₃(CH₂)₁₀COO(CH₂CH₂O)nH, n≈4— Molecular WeightApproximately 376— Ionic TypeNonionic— Appearance (25℃)Colorless to pale yellow transparent liquid— Active Content (%)≥99.0Solid content Monoester Content (%)≥98.0Main component purity Diester Content (%)≤1.0By-product Free Alcohol (%)≤1.0— Water Content (%)≤1.0— pH Value (1% Aqueous Solution)5.0~7.0— pH Value (5% Aqueous Solution)5.0~7.0— HLB Value9.0Hydrophilic-lipophilic balance Cloud Point (℃)Approximately 32 (1% Aqueous Solution)— Acid Value (mgKOH/g)≤5.0— Saponification Value (mgKOH/g)145~165— Hydroxyl Value (mgKOH/g)140~160— Iodine Value (gI₂/100g)≤1.0Low unsaturation Unsaturation (%)≤0.1— Density (g/cm³)0.97— Kinematic Viscosity (mm²/s)Approximately 35— Refractive Index1.456— Melting Point (℃)<-5Does not solidify at low temperature Flash Point (℃)>150High safety Surce Tension (mN/m)Approximately 30— Critical Micelle Concentration CMC (mg/L)Approximately 30— SolubilityEasily soluble in oil, dispersible in water— Foam CharacteristicsLow foaming— HygroscopicityLow— Chemical——

Lauric Acid Ethoxylate LAE-4

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Property	Value
CAS No.	9004-81-3
Molecular Formula	CH3(CH2)10COO(CH2CH2O)nH, n≈4
Appearance	Pale yellow liquid
Ionic Type	Nonionic
Avg. Molecular Weight	Approx. 376
Cloud Point	~32 (1%aq. soln.)
Active Content	≥99.0
pH Value(1%)	5.0~7.0
pH Value(5%)	5.0~7.0
Iodine Value	≤1.0
Solubility	Dispersible in water; soluble in ethanol and organic solvents
Surface Tension	~30
CMC	~30
Acid Value	≤5.0
Saponification Value	145~165
Hydroxyl Value	140~160
Moisture	≤1.0
Density	0.97
Kinematic Viscosity	~35
Refractive Index	1.456
Flash Point	>150
Hygroscopicity	Low
Chemical Stability	Stable under normal conditions; may hydrolyze under strong acid/alkali
Foam Property	Low foam
Alkali Resistance	Fair
Unsaturation	≤0.1
Melting Point	<-5
Monoester Content	≥98.0
Diester Content	≤1.0
Solid Content	≥99.0
Free Alcohol	≤1.0
Heavy Metal	≤10
Arsenic	≤2

Lauric Acid Ethoxylate LAE-4

Product Details

Applications

Properties

Safety

Product Overview

Performance Features

Packaging and Storage

PEG / Fatty Acid Ester Applications

Product Properties

Safety

GHS

Handling

Storage

First Aid

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