Question 1

Is castor oil polyoxyethylene ether EL-20 harmful to human body? Does it have an impact on the environment?

Accepted Answer

Castor oil polyoxyethylene ether EL-20 is a low-toxicity, low-irritation nonionic surctant. Under normal conditions of use, the risk to human health is low, but it may cause slight adverse effects on aquatic organisms, so direct discharge into water bodies should be avoided. Detailed Explanation Castor oil polyoxyethylene ether EL-20 (CAS No.: 61791-12-6) is classified as a non-acutely toxic substance in toxicology. The oral LD50 in rats is greater than 2000 mg/kg, indicating a very low acute hazard from oral ingestion. It has only slight irritation to skin and eyes and is not classified as a corrosive or sensitizing substance. However, repeated or prolonged contact may cause degreasing and drying of the skin. Therefore, it is recommended to wear nitrile or neoprene chemical protective gloves and chemical safety goggles during industrial operations. This product is not a hazardous material; it is non-flammable and non-explosive, making it relatively safe for storage and use at room temperature. However, under high temperature or open flame conditions, it may decompose to produce irritant fumes such as carbon monoxide and carbon dioxide. Therefore, it is still recommended to keep away from strong oxidants and open flames, and to maintain good ventilation in the working environment. In terms of environmental impact, EL-20 may cause slight adverse effects on aquatic organisms. Leaks should be prevented from entering sewers, water sources, or low-lying areas. Waste disposal must be handled by qualified waste treatment agencies, and direct discharge into soil or water bodies is strictly prohibited. Overall, under conditions of proper use and appropriate disposal, the risk of this product to humans and the environment is controllable. Safety Technical Parameters Safety IndicatorData Hazard ClassificationNon-hazardous material Acute Toxicity (Rat Oral LD50)> 2000 mg/kg Skin IrritationSlight irritation Eye IrritationSlight irritation Skin SensitizationRepeated contact may cause degreasing and drying FlammabilityNon-flammable, non-explosive Thermal Decomposition ProductsCarbon monoxide, carbon dioxide, irritant fumes Environmental HazardMay cause slight adverse effects on aquatic organisms Storage Temperature5–35°C Application Recommendations Given the low toxicity and good safety profile of EL-20, it is widely used in cosmetics and personal care products (creams, lotions, makeup removers, shampoos, etc.). The added amount in these end products is typically subject to safety assessments, making it safe and reliable for human use. In industrial applications (textile printing and dyeing, pesticide emulsification, metalworking fluids, industrial cleaning, etc.), it should be added according to formulation specifications and avoid direct long-term contact of operators with the undiluted liquid. Precautions During operation, it is recommended to wear nitrile or neoprene gloves and chemical goggles Maintain good ventilation in the working environment to avoid inhalation of aerosols or vapors In case of leakage, absorb with inert absorbent materials (e.g., sand, vermiculite), collect and seal for disposal Strictly prohibit discharging the product or its waste into sewers, water sources, or soil Store away from strong oxidizers, strong acids, and strong bases Store in a cool, dry place at a temperature controlled between 5–35°C, avoiding freezing After skin contact, rinse immediately with plenty of water and soap for at least 15 minutes; if irritation persists, seek medical attention

Question 2

What should I do if problems occur during the use of Castor oil polyoxyethylene ether EL-20? How to obtain technical support?

Accepted Answer

Do I need more detailed information? No, I don't. Based on the existing data structure, I have already grasped sufficient technical details. Now let me provide a clear guide for users on how to apply for technical support online. Clear Guide on How to Apply for Technical Support Online Data from Guoli Chemical Product Library Shows When encountering problems during the use of Castor oil polyoxyethylene ether EL-20, it is recommended to take the following steps: Professional Solution Path If phenomena such as unstable emulsification, layering, sedimentation, turbidity, foaming, oil floating, caking, gelation, flocculation, or agglomeration occur, you can: Immediately stop the operation Check personal protective equipment Consult the safety data sheet Contact Guoli Chemical official technical support Precautions According to Guoli Chemical's safety instructions, this product is slightly irritating to the skin and eyes. Be sure to wear chemical protective gloves and goggles during operation. Dispose of waste through a qualified treatment agency. Technical Parameters Parameter Item Value Indicator Chemical Category Nonionic surctant Hazardous Classification Non-hazardous Acute Toxicity No acute toxicity Storage Temperature 5–35°C Application Recommendations When using this product for processes such as emulsification, wetting, and dispersion, it is recommended to conduct small-scale tests to confirm the optimal dosage. This product is stable to acids, alkalis, and hard water, and has excellent compatibility with various surctants. For applications in textile printing and dyeing, pesticides, cosmetics, metalworking fluids, etc., refer to the Guoli Chemical application guide. Precautions Fully understand the product characteristics before use. If any unknown situation occurs, immediately stop the operation and contact for emergency technical support.

Question 3

How to purchase Castor Oil Polyoxyethylene Ether EL-20? What is the minimum order quantity?

Accepted Answer

Castor Oil Polyoxyethylene Ether EL-20 supports multiple specification purchases. The specific minimum order quantity and current quotation need to be confirmed directly with the sales team of Haian Guoli Chemical Co., Ltd. Purchase Process Castor Oil Polyoxyethylene Ether EL-20 (CAS No.: 61791-12-6) is one of the core products of Guoli Chemical, with stable production and supply throughout the year. The procurement process is as follows: First, you need to contact the sales department of Guoli Chemical to clarify the required product technical specifications, packaging requirements, and estimated usage volume; the sales engineer will provide a formal quotation (Proforma Invoice) and product technical data sheet (TDS) based on your needs; after mutual confirmation, a purchase and sales contract will be signed to arrange production or spot shipment. This product offers multiple packaging specifications, including 50kg plastic drums, 200kg plastic drums, and IBC totes. You can flexibly choose according to actual production consumption. Routine delivery time is typically 3-7 working days after payment, depending on real-time inventory and order volume. Technical Parameters Indicator ItemParameter Appearance (25°C)Light yellow to yellow viscous liquid Active Content≥99% pH Value (1% Aqueous Solution)5.0-7.0 HLB Value10.5 Cloud Point (°C)≥85 Hydroxyl Value (mgKOH/g)60-80 Saponification Value (mgKOH/g)55-65 Moisture Content≤0.5% Application Recommendations This product is an O/W type nonionic emulsifier. In pesticide emulsion in water (EW), the recommended dosage is typically 3%-8%; in cosmetic cream and lotion formulations, the recommended dosage is 1%-5%; in metalworking cutting fluid formulations, the suggested dosage is 5%-15%. The specific dosage should be determined through sample testing based on the formulation system. It is recommended to request a free sample for small-scale verification before purchase. Notes Price Explanation: The database shows "The above prices are for reference only. Actual prices, please contact the sales team for the latest quotation." Chemical raw material prices fluctuate with raw material market conditions. Please refer to the daily quotation for the final price. Minimum Order Quantity: There is no fixed MOQ data. Generally, Guoli Chemical can sell by single drum (50kg or 200kg) for customer sampling, while bulk procurement can negotiate more vorable commercial terms, subject to confirmation in the sales contract. Document Acquisition: For bulk purchases, you can simultaneously request the product quality certificate (COA), chemical safety data sheet (MSDS/SDS), and company qualification documents.

Question 4

Does castor oil polyoxyethylene ether EL-20 meet environmental requirements? Can a test report be provided?

Accepted Answer

Castor oil polyoxyethylene ether EL-20 can support the development of environmentally friendly formulations, but it has a slight impact on aquatic organisms and is not a "completely green" product; test reports need to be obtained separately from Guoli Chemical. Detailed Explanation Castor oil polyoxyethylene ether EL-20 has dual characteristics in terms of environmental compliance. From a raw material perspective, it uses natural castor oil as the starting material, belonging to renewable resource-based surctants, which has certain environmental advantages compared to fully petroleum-based products. From a product functionality perspective, EL-20, as a nonionic emulsifier, can be used in environmentally friendly pesticide formulations such as emulsion in water (EW) and microemulsion (ME), helping to reduce the amount of organic solvents in the formulation, which is an important environmental contribution in the field of pesticide formulations. However, it should be objectively noted that according to Guoli Chemical's product safety data, EL-20 may cause slight adverse effects on aquatic organisms, and it must not be discharged into sewers, water sources, or soil during disposal. This indicates that its ecotoxicity has not been completely eliminated and cannot be simply classified as a "green and environmentally friendly product". The current database also does not provide specific test data for key environmental indicators such as biodegradability or COD\/BOD values for this product, making it impossible to make a comprehensive environmental compliance judgment. Regarding test reports, our company's database currently does not include environmental-related test report documents for EL-20, such as RoHS, REACH, biodegradability, or VOC content. If you need to obtain official test reports (COA quality inspection report, MSDS safety data sheet, or specific environmental certification reports), it is recommended to contact Guoli Chemical's sales or technical department directly, providing your specific requirements (such as report type, testing standards, etc.). We will prepare them for you accordingly. Environmental Parameters Environmental IndicatorDataDescription Raw material sourceCastor oil (natural vegetable oil)Renewable resource-based Acute toxicity (oral)LD50 > 2000 mg\/kg (rat)Low toxicity Impact on aquatic organismsMay cause slight adverse effectsDischarge must be controlled Biodegradability dataNot availableNeeds actual measurement for confirmation VOC contentNot available— REACH complianceNot availableRegistration status needs confirmation Application Recommendations When using EL-20 in environmentally friendly formulations, it is recommended to pay attention to the following points: Environmentally friendly pesticide formulations: As an emulsifier used in emulsion in water (EW) and microemulsion (ME) formulations, EL-20 can replace organic solvents in traditional emulsifiable concentrates (EC), significantly reducing VOC emissions. This is its most important environmental application. Wastewater treatment: Industrial wastewater containing EL-20 should be properly treated (e.g., biological treatment or chemical demulsification) before discharge, and must not be directly discharged into natural water bodies. Environmental certification requirements: If the final product needs to pass natural\/organic certifications such as Ecocert or COSMOS, it is recommended to confirm in advance whether EL-20 is on the permitted list (PEG-based raw materials are restricted in some natural certifications). Precautions Waste disposal must be handled by qualified waste treatment agencies; discharge into sewers or water sources is strictly prohibited. If official test reports (COA, MSDS, RoHS, REACH compliance statement, etc.) are needed, please contact Guoli Chemical's sales department. We will provide the corresponding documents based on your specific needs. The above environmental assessment is based on the existing safety data sheet content. If your application scenario has specific environmental regulatory requirements (such as EU REACH, China's new chemical substance registration, etc.), it is recommended to confirm the compliance status of this product in the target market with us before purchasing.

Question 5

What are the advantages of castor oil polyoxyethylene ether EL-20 compared with other similar products?

Accepted Answer

According to the technical data of Guoli Chemical, the castor oil polyoxyethylene ether EL-20 model typically refers to the specification with an ethylene oxide addition number (EO number) of approximately 20. Its core advantage lies in its balanced emulsification, dispersion, and chemical stability, particularly demonstrating excellent reliability in high-temperature, hard water, and wide pH range environments. ### Detailed Explanation and Advantage Analysis Compared with models in the EL series with lower EO numbers (such as EL-10) or higher EO numbers (such as EL-40, EL-80), EL-20, with its moderate hydrophilic-lipophilic balance (HLB value of about 10.5), establishes the following unique advantages: 1. **Excellent Universal Emulsification Capability**: The HLB value of EL-20 gives it efficient emulsification power for mineral oils, animal and vegetable oils, and many common organic solvents, easily forming stable oil-in-water (O/W) emulsions. This is in contrast to EL-10, which has a lower HLB and stronger lipophilicity, or EL-40, which has a higher HLB and stronger hydrophilicity but may have reduced emulsification power for certain oils. EL-20 has a wider application range and is one of the top choices for formulators as a "universal emulsifier." 2. **High Chemical Stability**: Unlike some anionic emulsifiers or specific types of nonionic emulsifiers, EL-20 shows significant tolerance to acids, alkalis, and hard water ions (such as calcium and magnesium ions). This means that in complex industrial environments (such as acidic cleaners or alkaline metalworking fluids), it is less likely to il or precipitate, maintaining long-term stability of the emulsion system. 3. **Excellent Compatibility**: As a nonionic surctant, EL-20 is perfectly compatible with anionic, cationic, and other nonionic surctants. This characteristic makes it an ideal choice in compounding systems, allowing it to work synergistically with other functional additives without causing conflicts or reducing each other's effectiveness. 4. **Reliable Process Operability**: This product has low foam characteristics, a high cloud point, and good fluidity. In practical production applications, it is easy to pump, meter, and does not generate excessive foam, cilitating process control. Its high active content (≥99%) also ensures that suppliers provide high-purity, high-efficiency active substances. ### Core Technical Parameter Comparison Table | Technical Indicator | Castor Oil Polyoxyethylene Ether EL-20 | Interpretation of Comparison with Same Series Products | | :--- | :--- | :--- | | **HLB Value** | **10.5** | This is a key advantage. An HLB value in the range of 8-13 is very suitable for preparing O/W emulsions. EL-10 (HLB about 6.4) is more lipophilic; EL-40 (HLB about 13.3) is more hydrophilic. | | **Cloud Point (1% Aqueous Solution)** | **≥85°C** | A high cloud point means it can maintain good solubility and surce activity in high-temperature aqueous systems without precipitating due to temperature increase. This is crucial for applications requiring heating processes (such as textile dyeing and printing). | | **Ion Type** | **Nonionic** | This determines its wide compatibility and chemical stability, and is a core advantage distinguishing it from anionic and cationic emulsifiers. | | **Appearance** | **Light yellow to yellow viscous liquid** | Standard industrial product form, easy to handle. | | **Active Content** | **≥99%** | High purity, reliable performance, minimal impurity effects. | | **Hydroxyl Value** | **60-80 mgKOH/g** | Reflects its molecular chain length and reactive sites, can be used for quality control. | | **Safety** | **Non-hazardous, low toxicity, non-flammable** | Significant advantages in compliance, storage, transportation, and safe use. | ### Application Recommendations Based on the above advantages, castor oil polyoxyethylene ether EL-20 performs particularly well in the following applications: - **Textile Dyeing and Printing**: As a high-temperature leveling agent and efficient dispersant, its high cloud point and electrolyte resistance ensure stable performance in high-temperature and high-pressure dyeing processes. - **Pesticide Formulations**: Formulating environmentally friendly emulsion in water (EW) and microemulsion (ME) products, effectively emulsifying organic solvents and active ingredients, enhancing wetting and spreading of the spray solution on crop surces. - **Metalworking Fluids**: In cutting fluids and grinding fluids, it not only serves as an excellent emulsifier but also provides some lubricity, remaining stable in high-pH alkaline environments. - **Industrial Cleaners**: For hard surce and bric cleaning, its excellent emulsification and degreasing ability combined with low foam characteristics and alkali resistance significantly improve cleaning efficiency and simplify the rinsing process. ### Precautions - Although EL-20 has good compatibility, when compounding with high-concentration electrolytes or other specific additives in the final formulation, it is recommended to conduct a small-scale compatibility test first. - During storage, avoid high temperatures and freezing to maintain the product's optimal performance. This product has a low solidification point; it may become turbid or pasty below 5°C, but it can still be used after warming up and returning to its original state.

Question 6

How should Castor Oil Polyoxyethylene Ether EL-20 be stored? What is the shelf life?

Accepted Answer

Castor Oil Polyoxyethylene Ether EL-20 should be stored in a cool, dry, and well-ventilated warehouse, with the temperature controlled at 5–35°C, and the container kept tightly sealed; under strict adherence to the above storage conditions and with intact packaging, the recommended shelf life is 24 months (2 years) from the date of production. Detailed Explanation Castor Oil Polyoxyethylene Ether EL-20 (CAS: 61791-12-6) is a chemically stable nonionic surctant, but as a tty acid polyoxyethylene ether product, the ester and ether bonds in its molecular chain may slowly undergo hydrolysis or oxidation under prolonged high temperature, humidity, or light exposure, leading to a decrease in pH value and reduced emulsification performance. Therefore, proper storage management is key to maintaining its quality stability. According to the safety technical documentation of Guoli Chemical, this product is non-hazardous, non-flammable, and non-explosive, but under high temperature or open flame conditions, it may decompose to produce irritating fumes such as carbon monoxide. It should be stored away from heat sources, sparks, and open flames, and strictly separated from strong oxidizers, strong acids, and strong bases to avoid unintended chemical reactions. Storage Technical Parameters Storage ItemRequirement or Indicator Storage Temperature5–35°C, avoid freezing or high temperature Relative HumidityDry environment, avoid moisture absorption Container RequirementOriginal sealed container or inert material sealed container Incompatible MaterialsStrong oxidizers, strong acids, strong bases Warehouse ConditionCool, dry, well-ventilated dedicated warehouse Flash Point>200°C (non-flammable) Shelf Life Explanation In the product database of Guoli Chemical, the official shelf life for this product is not yet indicated. According to industry standards and stability data of similar nonionic surctants (PEG-20 castor oil series), under strict compliance with the above storage conditions and with intact, unopened packaging, the recommended shelf life is 24 months (from the production date). For products exceeding the recommended shelf life, it is advisable to re-test key indicators before use (e.g., pH value of 1% aqueous solution should be 5.0–7.0, appearance should be a light yellow to yellow viscous liquid, moisture ≤0.5%), and only use if the results are satisctory. Application Suggestions For partially used products after opening, the container should be promptly resealed to minimize prolonged exposure to air. If the product becomes turbid or solidifies under low-temperature conditions, this is a normal physical change. It can be restored by slowly warming to 20–30°C and gently stirring until uniform, without affecting performance. When using a container for the first time after long-term storage, it is recommended to sample and test core indicators such as emulsifying power and HLB value (10.5) to ensure they meet the formulation process requirements before batch production. Precautions This product is slightly irritating to skin and eyes. When sampling or transferring, it is recommended to wear nitrile rubber gloves and chemical safety goggles. The storage area should be equipped with emergency spill response materials (e.g., inert absorbent materials: sand, vermiculite) to prevent accidental discharge into drains or water bodies. Waste disposal must be handled by qualified waste treatment agencies and must not be discharged into the environment arbitrarily. For specific batch production dates, lot numbers, and recommended re-test periods, please refer to the product outer packaging label or the batch inspection certificate (COA) issued by Guoli Chemical.

Question 7

What safety precautions should be taken when using Castor Oil Polyoxyethylene Ether EL-20?

Accepted Answer

Castor Oil Polyoxyethylene Ether EL-20 is a non-hazardous substance with low toxicity and is not flammable, but attention should still be paid to its slight irritancy to skin and eyes. Personal protection and adequate ventilation should be ensured during operation. Detailed Description Castor Oil Polyoxyethylene Ether EL-20 (CAS No.: 61791-12-6) is a nonionic surctant with relatively high overall safety. Its acute toxicity is very low (rat oral LD50 > 2000 mg/kg), it is not classified as a dangerous chemical, and it is non-flammable and non-explosive. However, this does not mean that safe operation can be ignored—the product has slight irritancy to skin and eyes, and repeated or prolonged exposure may cause skin detting and dryness. Therefore, standardized operating procedures must still be followed in industrial use. Under normal use conditions, EL-20 does not release harmful gases. However, if exposed to open flames or high temperatures, the product may decompose and produce irritating fumes such as carbon monoxide and carbon dioxide, so it should be kept away from heat sources and open flames. Additionally, the product may have slight adverse effects on aquatic organisms; in case of a spill, prevent it from entering sewers or water sources. Safe Operation and Personal Protection Personal Protective Equipment (PPE) Protection AreaProtection RequirementRemarks Respiratory SystemGenerally no special protection requiredIf aerosols or dust are generated, it is recommended to wear a particulate respirator HandsWear chemical protective glovesNitrile or chloroprene rubber gloves recommended EyesWear chemical safety gogglesTo prevent liquid splashes into eyes BodyWear conventional work clothingAvoid prolonged skin contact Operational Precautions Ensure the work area is well-ventilated, and install local exhaust ventilation in places where aerosols may be generated. Avoid inhaling aerosols or vapors, and avoid direct contact with eyes, skin, and clothing. Wash hands thoroughly after handling, and do not eat, drink, or smoke in the work area. Incompatible materials: Keep away from strong oxidizers, and avoid mixing storage with strong acids and strong bases. Storage and Emergency Response Storage Conditions Store in a cool, dry, well-ventilated dedicated warehouse or storage area. Keep containers tightly closed, away from heat sources, sparks, and open flames. Storage temperature should be controlled at 5–35°C, avoiding freezing or high temperature conditions. Store separately from strong oxidizers, strong acids, and strong bases. Store in the original container or in a well-sealed inert material container. Emergency Measures Accident TypeHandling Method Skin ContactImmediately remove contaminated clothing and wash skin thoroughly with plenty of water and soap for at least 15 minutes. If irritation persists, seek medical attention. Eye ContactImmediately flush eyes with plenty of water or saline solution, keeping eyelids open, for at least 15 minutes. If irritation or pain persists, seek immediate medical attention. InhalationMove person to fresh air. If discomfort occurs, seek medical attention. IngestionDo NOT induce vomiting. Rinse mouth with water and then seek immediate medical attention. Spill HandlingAbsorb spilled liquid with inert absorbent material (e.g., sand, vermiculite), collect into a sealed container and dispose of in accordance with local regulations. Flush residual area with plenty of water. Prevent spill from entering sewers, water sources, or low-lying areas. FireThis product is not flammable, but may decompose to produce irritating fumes such as carbon monoxide in a fire. Firefighters must wear self-contained breathing apparatus and full protective clothing. Select appropriate extinguishing media based on the surrounding fire (water fog, foam, dry powder, carbon dioxide). Disposal Dispose of in accordance with local, regional, and national regulations. Do not discharge into sewers, water sources, or soil. It is recommended to entrust disposal to a licensed waste treatment cility. Application Recommendations In applications such as textile dyeing and printing, pesticide emulsification, cosmetics, and metalworking fluids, EL-20 is typically used in small proportions in formulations, and under normal operating conditions the safety risk is controllable. However, attention is needed: during heating operations (e.g., high-temperature emulsification processes), ventilation should be enhanced to prevent vapor accumulation; during bulk feeding or dispensing operations, it is recommended to wear goggles and protective gloves to avoid splash contact. If used in cosmetic formulations, the final product must comply with relevant cosmetic safety standards to ensure that skin irritation is within acceptable limits. Notes The above safety information is compiled based on product data provided by Haian Guoli Chemical Co., Ltd. and existing knowledge, and serves only as a guide for safe operation, not as a guarantee of product performance. Users should develop and implement appropriate safety operating procedures according to specific working conditions and local regulations. In the event of severe contact or accidental ingestion, seek immediate medical attention and present the Safety Data Sheet (SDS).

Question 8

How to use Castor Oil Ethoxylate EL-20? What is the recommended dosage?

Accepted Answer

The application method of Castor Oil Ethoxylate EL-20 varies by industry, and it is usually added to the oil or water phase under stirring. Based on industrial application practices, the recommended dosage is generally between 1% and 15%, and the specific amount needs to be optimized through experiments. Detailed Description Castor Oil Ethoxylate EL-20 (CAS No.: 61791-12-6) is a nonionic O/W emulsifier with an HLB value of 10.5, appearing as a light yellow to yellow viscous liquid. This product is liquid or paste at room temperature. When added directly, it is recommended to heat it appropriately to 30~40°C to reduce viscosity, making it easier to measure and disperse. Because it combines hydrophilicity and lipophilicity, it can be used alone as the main emulsifier or compounded with anionic or cationic surctants for synergistic effects. The general operation steps for use are: First, mix EL-20 with the oil phase components to be emulsified, stirring at 50~70°C until uniform and transparent; separately heat the water phase components to the same temperature; then, under rapid stirring (recommended speed 500~1500 rpm), slowly add the water phase to the oil phase, or vice versa, continue stirring and cool to room temperature to obtain a stable emulsion. In pesticide emulsions in water (EW) or microemulsions (ME) formulations, EL-20 is often compounded with anionic emulsifiers (such as calcium salt) to achieve better emulsion stability and particle size distribution. For reactor feeding scenarios, EL-20 can be added before, during, or after the polymerization reaction. When used as an emulsion polymerization emulsifier, it is recommended to pre-disperse it in some water before adding it to the reaction system to ensure sufficient emulsification of monomer droplets and stable polymerization. As a post-added wetting and dispersing agent, it can be directly added to the grinding base during the pigment dispersion stage to improve the fineness of the color paste and prevent secondary flocculation of pigment particles. Technical Parameters Parameter ItemSpecification Indicator AppearanceLight yellow to yellow viscous liquid Ionic TypeNonionic HLB Value10.5 Active Content≥99% pH Value (1% aqueous solution)5.0~7.0 Cloud Point (1% aqueous solution)≥85°C Water SolubilitySoluble in water, easily soluble in ethanol, ether and other organic solvents Foaming CharacteristicsLow foaming Density (25°C)1.05~1.10 g/cm³ Freezing Point Storage Temperature5~35°C Application Recommendations The following are industry general recommended dosages for various application fields (based on total formulation weight), data sourced from industry practices: Cosmetic Creams and Lotions: Recommended dosage 2%~5%, used as O/W primary emulsifier or auxiliary emulsifier. Suitable for ce creams, lotions, cleansing oils, body washes, shampoos, and other products. Can be used alone or compounded with tty alcohol ethoxylates to adjust texture and stability. Pesticide Emulsions in Water (EW) and Microemulsions (ME): Recommended dosage 4%~10%, often used in combination with anionic emulsifiers. The HLB value of 10.5 makes it suitable for formulating with aromatic solvents and vegetable oils as the oil phase, effectively reducing oil-water intercial tension and improving emulsion resistance to Ostwald ripening. Metalworking Fluids: Recommended dosage 5%~15%, used as an emulsifier and lubricating component. It functions to emulsify base oils in emulsified cutting fluids and grinding fluid concentrates, while also providing some oily lubrication and anti-rust properties. Can be used synergistically with sodium petroleum sulfonate, triethanolamine, etc. Textile Dyeing and Finishing Auxiliaries: Recommended dosage 1%~5%, used as a leveling agent, dispersant, or softener component. In high-temperature and high-pressure dyeing processes, due to its cloud point ≥85°C, it provides stable dispersion and leveling effects. Coatings and Inks: Recommended dosage 0.5%~3% (5%~15% based on pigment weight), used as a pigment wetting and dispersing agent. When added during the color paste grinding stage, it can significantly shorten dispersion time, improve color strength, and storage stability. Industrial Cleaners: Recommended dosage 3%~8%, used in hard surce degreasing cleaning and bric washing formulations. Its low foaming characteristics make it suitable for low to medium temperature cleaning processes, easy to rinse, and residue-free. Precautions Operation and Safety It has mild irritation to skin and eyes. It is recommended to wear nitrile rubber gloves and chemical safety goggles during operation, and ensure good ventilation in the working environment. Turbidity or stratification may occur during low-temperature storage, which is a normal physical phenomenon. After heating to 30~40°C and stirring evenly, it can still be used normally without affecting product performance. The HLB value is 10.5, suitable for O/W emulsification systems. If emulsifying oil phases with different polarities, it is recommended to compound with lower HLB emulsifiers (such as EL-10, Span series) to match the required HLB value of the oil phase. Storage temperature should be controlled at 5~35°C, avoiding freezing or prolonged exposure to high temperatures. Keep away from strong oxidizers and keep the container tightly sealed. The dosages for each application field are only reference ranges. The actual optimal dosage should be determined through gradient experiments based on the specific formulation, oil phase type, and process conditions.

Question 9

What are the main industries and processes where Castor Oil Polyoxyethylene Ether EL-20 is applied?

Accepted Answer

Castor Oil Polyoxyethylene Ether EL-20 is widely used in six major industries: textile printing and dyeing, pesticide formulations, personal care products, metalworking fluids, coatings and inks, and industrial cleaning, serving as a core emulsifying, dispersing, and wetting functional component. Detailed Description Castor Oil Polyoxyethylene Ether EL-20 (PEG-20 Castor Oil, CAS No.: 61791-12-6) is a high-performance nonionic surctant with an HLB value of approximately 10.5, combining hydrophilic and lipophilic characteristics, making it an indispensable multifunctional additive in various industry formulations. This product exhibits high stability to acids, alkalis, and hard water, and has excellent compatibility with anionic, cationic, and other nonionic surctants, enabling flexible compounding to meet diverse complex process requirements. In practical applications, EL-20 plays distinct key roles across different industries. It can serve as an O/W emulsifier for pesticide emulsions (EW) and cosmetic creams and lotions; in metalworking fluids, it performs triple functions of emulsification, lubrication, and rust prevention; in textile printing and dyeing processes, it provides leveling and softening effects due to its excellent penetrating power (approximately 50 seconds, 1% aqueous solution). Its low-foaming property and anti-redeposition capability are particularly prominent in industrial cleaning scenarios. Technical Parameters ParameterValue/Property Appearance (25°C)Light yellow to yellow viscous liquid Ionic TypeNonionic HLB ValueApprox. 10.5 Active Content≥ 99% Cloud Point (1% Aqueous Solution)≥ 85°C pH Value (1% Aqueous Solution)5.0 – 7.0 Surce Tension (1% aq., 25°C)Approx. 42 mN/m Penetrating Power (1% Aqueous Solution)Approx. 50 seconds Foaming PropertyLow foam Density (25°C)1.05 – 1.10 Application Suggestions Based on practical application feedback from Guoli Chemical, specific process solutions of this product in six major industries are as follows: Textile Printing and Dyeing: Used as an efficient leveling agent and dispersant to improve dye penetration and uniform distribution on bric. It is recommended to add at a working concentration of 1–3 g/L during the initial stage of the dyeing process, effectively preventing color spots while imparting a soft and smooth hand feel to fibers. Pesticide Formulations: Used to prepare environmentally friendly formulations such as emulsions (EW) and microemulsions (ME). Recommended dosage is 3%–8% of the total formulation. When compounded with other anionic emulsifiers, it can further enhance the dispersion stability and bioefficacy coverage of active ingredients. Cosmetics and Personal Care Products: Acts as an emulsifier and solubilizer for creams, lotions, cleansing oils, etc. It is recommended to pre-dissolve in the oil phase, with a dosage of about 2%–5% of the formulation, to help stabilize the oil-water mixture and provide a mild skin feel. Metalworking Fluids: Performs combined functions of emulsification, lubrication, and rust prevention in cutting fluids and grinding fluids. As a basic emulsifier, reference dosage is 5%–15% of the concentrate, significantly improving cooling and lubrication performance and extending tool life. Coatings and Inks: Used as a pigment wetting dispersant and emulsion polymerization emulsifier. It is recommended to add at 1%–3% of the pigment amount during the grinding stage, improving the fineness and storage stability of the color paste and enhancing the gloss of the coating film. Industrial Cleaning Agents: Exhibits excellent emulsifying detergency and anti-redeposition ability. In hard surce cleaning and industrial degreasing formulations, it is recommended to compound with other additives at a ratio of 2%–8%, offering high oil removal efficiency with low foam and easy rinsing. Precautions This product is non-hazardous with no acute toxicity (oral LD50 in rats > 2000 mg/kg), but precautions should still be taken during handling: it has mild irritancy to skin and eyes, so it is recommended to wear nitrile gloves and chemical safety goggles, and maintain good ventilation in the working environment; storage temperature should be controlled at 5–35°C, avoiding freezing; should be stored separately away from strong oxidizing agents.

Question 10

What are the physicochemical technical parameters of Castor Oil Polyoxyethylene Ether EL-20?

Accepted Answer

Hai'an County Guoli Chemical Co., Ltd. Detailed Physicochemical Technical Parameters of Castor Oil Polyoxyethylene Ether EL-20 Detailed Description Castor Oil Polyoxyethylene Ether EL-20 is a classic nonionic surctant produced by Guoli Chemical, with the INCI name PEG-20 Castor Oil, CAS number 61791-12-6. This product appears as a light yellow to yellow viscous liquid, possessing excellent emulsifying, wetting, and dispersing capabilities, and exhibits high stability towards acids, alkalis, and hard water. Its molecular weight is approximately 1500-2000, and its chemical structure endows it with excellent compatibility, making it widely applicable in multiple industrial fields such as textiles, agrochemicals, daily chemicals, and metalworking. From the technical specifications, EL-20 has a moderate hydrophilic-lipophilic balance value (HLB value about 10.5), making it particularly suitable as an O/W (oil-in-water) emulsifier, effectively stabilizing emulsion systems of mineral oils and animal and vegetable oils. This product has a high active content (≥99%), low moisture content (≤0.5%), and exhibits low foam and strong penetrability (penetration time about 50 seconds for a 1% aqueous solution) in practical applications, which helps improve efficiency in textile dyeing leveling and industrial cleaning processes. In terms of physical property parameters, the density of EL-20 is 1.05~1.10 g/cm³, kinematic viscosity at 25°C is about 700 mm²/s (low shear viscosity about 800 mPa·s), refractive index (20°C) is 1.471-1.475. The pH value of its 1% aqueous solution is in the neutral range of 5.0-7.0, indicating its mild nature. The cloud point is typically ≥85°C, and the flash point is above 200°C, classifying it as a non-hazardous product with high thermal stability and operational safety. Notably, this product has a low pour point (melting point below 0°C) and remains liquid at low temperatures, making it convenient for winter use. Technical Parameters Parameter Technical Indicator Parameter Technical Indicator Chemical Name Castor Oil Polyoxyethylene (20) Ether CAS Number 61791-12-6 Ionic Type Nonionic Appearance Light yellow to yellow viscous liquid HLB Value 10.5 Cloud Point (1% aq.) ≥85 °C Active Content ≥99% pH Value (1%, 25°C) 5.0 - 7.0 Density (25°C) 1.05 ~ 1.10 g/cm³ Kinematic Viscosity (25°C) ~700 mm²/s Surce Tension (1% aq., 25°C) ~42 mN/m Critical Micelle Concentration ~0.01% (25°C) Hydroxyl Value 60 - 80 mgKOH/g Saponification Value 55 - 65 mgKOH/g Iodine Value 25 - 35 gI₂/100g Acid Value ≤0.5 mgKOH/g Refractive Index (20°C) 1.471 - 1.475 Flash Point >200 °C Moisture ≤0.5% Foam Characteristics Low Foam Penetrability (1% aq.) ~50 seconds Solubility Soluble in water, easily soluble in ethanol, ether Heavy Metal Content ≤10 ppm Arsenic Content ≤2 ppm Application Recommendations Based on its HLB value of 10.5 and excellent emulsification stability, EL-20 is particularly suitable for systems requiring O/W emulsification. In practical industrial formulations, it is recommended as a general-purpose emulsifier and solubilizer: Textile Dyeing and Printing Field: Utilizing its strong penetrability and leveling characteristics, it is recommended for use as a leveling agent component in dye baths, helping to improve the uniformity of dye diffusion within fibers. Agrochemical Formulation Field: As a nonionic emulsifier, it is recommended for compounding with anionic emulsifiers (such as calcium salts)

Castor Oil Ethoxylate EL-20

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Property	Value
CAS No.	61791-12-6
Molecular Formula	C57H104O9·(C2H4O)n, n≈20
Appearance	Pale yellow to yellow viscous liquid
Ionic Type	Nonionic
Avg. Molecular Weight	~1500-2000
Cloud Point	≥85
Active Content	≥99%
pH Value(1%)	5.0-7.0
pH Value(5%)	5.0-7.0
Iodine Value	25-35
Solubility	Soluble in water; readily soluble in ethanol, ethyl ether and other organic solvents
Surface Tension	~42 (1% aq., 25°C)
CMC	~0.01% (25°C)
Acid Value	≤0.5
Saponification Value	55-65
Hydroxyl Value	60-80
Moisture	≤0.5
Density	1.05~1.10
Kinematic Viscosity	~700 (25°C)
Refractive Index	1.471-1.475 (20°C)
Flash Point	>200
Hygroscopicity	Low
Chemical Stability	Stable
Penetration	~50 s (1% aq.)
Foam Property	Low foam
Alkali Resistance	Good alkali stability
Unsaturation	0.9-1.4 mol/kg
Viscosity	~800 mPa·s (25°C)
Melting Point	<0°C (liquid)
Low Shear Viscosity	~800 mPa·s
Solid Content	≥99%
Free Alcohol	≤2%
Heavy Metal	≤10 ppm
Arsenic	≤2 ppm

Castor Oil Ethoxylate EL-20

Product Details

Applications

Properties

Safety

Product Overview

Performance Features

Packaging and Storage

Castor Oil Ethoxylate Applications

Product Properties

Safety

GHS

Handling

Storage

First Aid

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