Question 1

Is castor oil polyoxyethylene ether EL-40 harmful to human body? Does it have an impact on the environment?

Accepted Answer

Castor oil polyoxyethylene ether EL-40 poses certain hazards to both human health and the environment: it is irritating to skin and eyes, harmful to aquatic life, and may cause long-term environmental impacts. Effects on Human Health Castor oil polyoxyethylene ether EL-40 is a irritant substance. According to GHS classification criteria, its skin corrosion/irritation is Category 2, serious eye damage/eye irritation is Category 2, and the signal word is "Warning". The specific hazards are as follows: Skin contact: May cause skin irritation (H315), manifested as redness, pain, etc. If contact occurs, immediately remove contaminated clothing and rinse with plenty of running water and soap for at least 15 minutes. If irritation persists, seek medical attention. Eye contact: May cause serious eye irritation (H319). Immediately lift eyelids and rinse gently with plenty of running water or saline solution for at least 15 minutes, and seek medical treatment as soon as possible. If wearing contact lenses, remove them during the initial rinsing. Inhalation and ingestion: If inhaled, move the patient to fresh air and keep breathing unobstructed; if ingested, do not induce vomiting, rinse mouth with water and seek medical attention immediately. Overall, under normal industrial use conditions, as long as standard operating procedures are followed and protective equipment (such as chemical safety gloves, protective goggles, protective clothing) is worn, health risks can be minimized. Environmental Impact This product is harmful to aquatic life and may cause long-term persistent effects in the aquatic environment (H412). This means that even at low concentrations, it may produce chronic toxic effects on aquatic ecosystems such as fish and plankton, and is not easily degraded quickly in the natural environment. In the event of a spill emergency, the product must be prevented from entering soil, sewers, surce water or groundwater systems. If a spill occurs, immediately contain and absorb with inert absorbent materials (such as sand, vermiculite), and dispose of the absorbed waste as hazardous waste through professional agencies. It is strictly prohibited to discharge untreated product or wastewater containing this product directly into municipal sewage networks or natural waters. Safe Use Recommendations Personal Protective Measures Must wear chemical safety gloves, protective goggles or ce shield, and appropriate work clothing during operation Ensure the work area is well-ventilated, and use local exhaust ventilation if necessary After work, thoroughly wash hands and exposed skin with soap and water No eating, drinking or smoking in the work area Storage and Disposal Storage temperature is recommended to be maintained between 5°C and 35°C, in a cool, dry, well-ventilated place Keep container tightly closed, away from ignition sources, heat sources and direct sunlight; avoid coexistence with strong oxidizers and strong acids Waste chemicals and contaminated containers must be disposed of at approved chemical waste treatment cilities in accordance with local, national and international environmental regulations

Question 2

What should I do if problems occur during the use of Castor Oil Polyoxyethylene Ether EL-40? How to obtain technical support?

Accepted Answer

If problems occur during the use of Castor Oil Polyoxyethylene Ether EL-40, it is recommended to first check whether product storage and operation comply with the specifications. For technical issues such as emulsification effect, layering, or abnormal foam, the formulation and process can be gradually adjusted. In case of safety exposure or serious quality problems, immediately follow the first aid measures in the product safety technical instructions, and contact Guoli Chemical for technical support through the purchasing channel or official label information. Common problems and troubleshooting steps during use If the emulsion is unstable or delamination occurs during the application of Castor Oil Polyoxyethylene Ether EL-40, first confirm the storage conditions. The standard storage temperature for this product is between 5°C and 35°C. If it has been subjected to low-temperature freezing or prolonged exposure to high temperatures exceeding 35°C, the product may separate or deteriorate, affecting its emulsifying performance. If storage is confirmed normal, it is recommended to check the amount of electrolytes added in the formulation, the type of oil phase, and the hardness of water. EL-40 itself has an HLB value between 12.5 and 13.5, suitable for emulsifying various mineral oils and animal/vegetable oils. However, if the oil phase has strong polarity or the system contains high concentrations of salts, it may be necessary to combine with other low-HLB emulsifiers (such as EL-10 or Span series) for synergistic adjustment. If uneven leveling or dye spots occur in textile printing and dyeing processing, it is recommended to check the pH value and heating rate of the dye bath. EL-40 has good acid and alkali resistance (pH value of 1% aqueous solution is 5.0-7.0), but prolonged exposure to strong alkaline or strong acidic conditions at high temperatures may gradually hydrolyze and affect dispersibility. It is recommended to pre-mix EL-40 with some soft water and then slowly add it to the working solution to avoid local high concentration causing dye aggregation. For scenarios with high foaming requirements, EL-40 itself is a low-foaming nonionic surctant. Although it can effectively suppress some foam, if mixed with high-foaming surctants, excessive foam may also occur. In this case, the single addition amount of EL-40 can be appropriately reduced or added stepwise. If the product appearance changes from a light yellow oily liquid to an extremely viscous paste, it is usually due to low ambient temperature. It can be placed in a constant temperature environment of 20-30°C to slowly recover and stirred slightly to make it uniform. Do not use steam or open flame for rapid heating to avoid local overheating destroying the molecular structure. Safety and leakage emergency treatment If the product splashes into the eyes or contacts the skin, follow the first aid measures in the product safety technical instructions strictly. In case of eye contact, immediately lift the eyelids and rinse with plenty of running water or normal saline for at least 15 minutes, and seek medical attention immediately. For skin contact, remove contaminated clothing and wash with plenty of water and soap for at least 15 minutes. If irritation persists, seek medical attention promptly. In case of leakage, cover and absorb with inert adsorbent materials such as sand or vermiculite, collect and dispose of as hazardous waste through a qualified disposal company. Do not discharge directly into water bodies. The above first aid measures are directly from the safety technical instructions compiled by Guoli Chemical for this product, with the highest operational priority. Technical parameters When application problems occur, the following key parameters can be used to determine whether the product quality is normal: Castor Oil Polyoxyethylene Ether EL-40 Key Parameters Quick Reference Parameter ItemStandard Value/RangeDescription AppearanceLight yellow to yellow transparent liquidMay become paste at low temperature HLB Value12.5~13.5Moderate, O/W emulsifier pH Value of 1% Aqueous Solution5.0-7.0Nonionic, acid and alkali resistant Active Content≥99%This product is high purity grade Hydroxyl Value60-75 mgKOH/gReflects molecular activity Dynamic Viscosity (25°C)400-600 mPa·sViscous liquid, varies with temperature Cloud Point≥100°CGood temperature resistance Application recommendations Recommended dosages vary in different application scenarios:Pesticide emulsification: Recommended dosage is 5%-15% of the total preparation weight. Better results when combined with anionic auxiliaries (such as calcium salt regulators), which helps improve the dispersion stability of the emulsion and the spreading ability of the target liquid. Metalworking fluids: As an emulsifier, recommended addition amount is 3%-10% of the total concentrate weight. Used with mineral oil base, it provides both emulsifying and auxiliary lubrication functions. Water hardness should be monitored to prevent demulsification. Coatings and inks: When used as a pigment wetting dispersant, it is recommended to add 1%-5% based on pigment weight. Grind with pigment first to effectively develop color and prevent flocculation and flooding. Daily chemical creams: As a mild emulsifier, dosage is 2%-8%. Due to its certain cloud point and solubilization characteristics, it can assist in stable encapsulation of fragrances and oily active ingredients. How to obtain official technical support from Guoli Chemical If the problem remains unresolved after strictly following the above troubleshooting and operation, it is recommended to immediately stop use and retain a sample of the problematic product. You can check the batch number and production date printed on the product packaging barrel, and then contact the business manager of Hai'an Guoli Chemical Co., Ltd. directly through the sales channel you purchased from. This is the stest way to obtain technical guidance and after-sales processing. As the manucturer, Guoli Chemical can usually provide product application technical consultation and formulation adjustment suggestions and other supporting services. You can also scan the enterprise QR code on the packaging or visit its official platform to query the latest technical service policies.

Question 3

How to purchase Castor Oil Polyoxyethylene Ether EL-40? What is the minimum order quantity?

Accepted Answer

Castor Oil Polyoxyethylene Ether EL-40 has not announced a unified minimum order quantity. Actual orders need to contact the sales team of Guoli Chemical directly for the latest quotation and ordering policy. Detailed Description Castor Oil Polyoxyethylene Ether EL-40 (CAS: 61791-12-6) is a nonionic surctant product sold by Hai'an Guoli Chemical Co., Ltd., with the chemical name Castor Oil Polyoxyethylene (40) Ether (PEG-40 Castor Oil). According to the product database, the unit price of this product is determined through negotiation. The actual price and minimum order quantity are determined by the sales team based on order volume, packaging method, and market conditions. Currently, there is no unified online minimum order standard. The product offers the following conventional packaging specifications for customers to choose from: 50kg plastic drum, 200kg plastic drum, and IBC tote (approximately 1000kg). The specific packaging can be flexibly determined based on your usage volume and storage conditions. The general ordering process is: Contact Guoli Chemical through official channels (official website or business hotline) -> Submit requirements (product model, quantity, packaging preference, receiving information) -> Obtain a formal quotation -> Confirm the order and arrange shipment. Packaging Specifications The following are the conventional packaging options for Castor Oil Polyoxyethylene Ether EL-40 for your reference during consultation: Packaging SpecificationPackaging MaterialApplicable Scenario 50kgPlastic DrumSmall batch trial, laboratory R&D 200kgPlastic DrumRegular industrial production procurement IBC ToteComposite Intermediate Bulk ContainerLarge-scale continuous production, storage and transfer Application Recommendations This product is widely used in textile printing and dyeing (emulsification, leveling, antistatic), pesticide formulations (emulsification and dispersion), coatings and inks (pigment wetting and dispersion), metalworking fluids (emulsification and lubrication), and daily chemical products (solubilization, cleaning), etc. The HLB value is moderate, suitable for constructing oil-in-water emulsion systems. It is recommended to clarify your specific application direction before ordering so that the technical team of Guoli Chemical can provide formulation suggestions and dosage guidance. Precautions This product is classified as an irritant (H315 skin irritation, H319 serious eye irritation). Protective gloves and goggles must be worn during operation. Storage temperature is recommended to be maintained between 5°C and 35°C, avoiding high temperatures and extreme cold to prevent product separation or deterioration. The above price information is sourced from the Guoli Chemical database (updated on June 10, 2026) and is for reference only. The final transaction price is subject to real-time confirmation by the sales team.

Question 4

Does castor oil polyoxyethylene ether EL-40 meet environmental requirements? Can a test report be provided?

Accepted Answer

Castor oil polyoxyethylene ether EL-40 does not fully meet stringent environmental "green" standards, as it poses chronic hazards to aquatic organisms; regarding the test report, currently, the Guoli Chemical database does not have a third-party test report available for download. Detailed Explanation According to the safety technical documentation in the Guoli Chemical product database, the GHS classification of castor oil polyoxyethylene ether EL-40 includes "Chronic aquatic hazard: Category 3", with the hazard statement "H412: Harmful to aquatic life with long-lasting effects." This indicates that although the product itself is non-toxic, it cannot be defined as an environmentally friendly product that is completely harmless to the environment. In natural water bodies, it may cause long-term negative impacts on aquatic ecosystems, so its use and disposal must be strictly managed, and direct discharge without treatment is prohibited. This is a key point in assessing its environmental compliance. Regarding the test report you requested, the product database currently available to you only contains detailed product technical specifications and safety data sheets, and does not include environmental compliance test reports (such as SGS, RoHS, REACH) issued by third-party testing agencies. Such reports usually need to be requested separately from the manucturer or seller based on the customer's specific needs and procurement batch. Technical Parameters (Environmental Related) The following are key environmental and safety data for this product, all sourced from the Guoli Chemical database, which can serve as a reference for evaluation: Indicator Category Parameter Details Data Source GHS Environmental Hazard Classification Chronic aquatic hazard: Category 3 Guoli Chemical Product Safety Data Sheet Environmental Hazard Statement H412: Harmful to aquatic life with long-lasting effects Ecotoxicity Data Not available (e.g., LC50/EC50) Biodegradability Not available Heavy Metal Content Total heavy metals ≤ 10 ppm, Arsenic ≤ 2 ppm Guoli Chemical Product Technical Specifications Waste Disposal Requirements Must be incinerated at a licensed waste treatment cility; discharge into water bodies is strictly prohibited Application Recommendations Although this product carries a certain risk of aquatic toxicity, through responsible disposal measures, it remains an efficient and indispensable auxiliary agent in many industrial fields. At normal usage concentrations, after treatment by conventional wastewater treatment cilities, its environmental risk is controllable. Textile and Pesticide Industries: As an emulsifier and leveling agent, it significantly improves the dispersion stability of active substances, reducing total chemical usage and indirectly lowering environmental burden. Metalworking Fluids: Its excellent lubricity helps reduce mechanical wear and extend equipment life, making it environmentally friendly from a resource conservation perspective. Compliant Use: It is recommended that all industrial users follow operational guidelines, collect production wastewater uniformly, and treat it through the ctory's wastewater treatment system or a licensed third-party cility to meet discharge standards, in compliance with local environmental regulations. Precautions Direct discharge is prohibited: This product, its residues, and washing wastewater must not be discharged directly into municipal sewage systems or any natural water bodies (rivers, lakes, etc.). Test Report Application: If you require professional environmental compliance test reports (such as ROHS, REACH, biodegradability reports), we suggest contacting Guoli Chemical's sales department or technical support team directly. They can provide the latest batch test data based on your specific needs or assist you in completing the specific testing process. Safe Handling: When handling undiluted product, be sure to wear gloves and safety goggles to prevent skin and eye contact. This is both a safety requirement and the basis for preventing accidental spills and localized pollution.

Question 5

What are the advantages of Castor Oil Ethoxylate EL-40 compared to other similar products?

Accepted Answer

According to the technical data from Guoli Chemical, the core advantage of Castor Oil Ethoxylate EL-40 lies in its **moderate HLB value** and **balanced emulsifying performance**, making it more versatile than other similar products with longer EO chains in various application scenarios. Compared to EL-20 (more lipophilic) and EL-80 (more hydrophilic) in the database, EL-40 has an EO number of 40, which is at a "golden balance point". It can serve as an efficient oil-in-water (O/W) emulsifier, particularly good at emulsifying mineral oils, animal and vegetable oils, and performs excellently in systems that need to balance emulsification efficiency and emulsion stability. The following is a comparison of key differences and advantages of the EL series products based on the Guoli Chemical product database: | Comparison Dimension | **Castor Oil Ethoxylate EL-40** | **Castor Oil Ethoxylate EL-20** | **Castor Oil Ethoxylate EL-80** | | :--- | :--- | :--- | :--- | | **Hydrophile-Lipophile Balance** | **Moderate**, with good hydrophilicity and lipophilicity | **Low**, more lipophilic | **High**, extremely strong hydrophilicity and solubilizing ability | | **Physical Form** | Light yellow oily liquid to paste | Light yellow to yellow viscous liquid | Light yellow to brownish yellow transparent liquid or paste | | **Core Advantage** | **High versatility**, balanced emulsifying ability, wide application range | More suitable as auxiliary emulsifier for water-in-oil (W/O) systems | Better suited for high-polarity systems or as efficient solubilizer | | **Main Applications** | Textile printing and dyeing, pesticide formulations, paints and inks, metalworking fluids | More focused on formulations requiring stronger lipophilicity | Solubilization in daily chemical products, high electrolyte systems, fully synthetic cutting fluids | **Detailed Advantage Description:** 1. **Wider application adaptability**: The emulsifying, wetting, and dispersing abilities of EL-40 are very balanced. In **textile printing and dyeing**, it ensures uniform dye penetration without causing uneven dyeing due to excessively st initial wetting like products with too strong hydrophilicity; in **pesticide formulations**, it can stably emulsify and disperse oily active ingredients, improving the spreading ability of the spray liquid on leaves. 2. **Strong formulation compatibility**: As a nonionic surctant, EL-40 is not only resistant to hard water, acids, and alkalis but also compatible with anionic, cationic, and other nonionic additives. This means that when developing complex systems, formulators have fewer application limitations with EL-40 and higher flexibility in adjusting formulations. 3. **Balance of performance and safety**: While providing efficient functions, EL-40's mildness derived from natural castor oil gives it a place in personal care and other daily chemical products compared to some small-molecule emulsifiers. **Application Suggestions and Precautions:** * **Recommended dosage**: * As an emulsifier: Typically **2% - 8%** of the total amount in emulsions. * As a wetting dispersant: Typically **0.5% - 5%** of the pigment amount when grinding or dispersing pigments. * **Operational safety**: According to Guoli Chemical's safety data, EL-40 is classified as an **irritant** (H315, H319), harmful to aquatic life (H412). **Protective gloves and goggles must be worn** during operation. In case of contact with skin or eyes, rinse immediately with plenty of water for at least 15 minutes. Do not discharge directly into water bodies without treatment.

Question 6

How should castor oil polyoxyethylene ether EL-40 be stored? What is the shelf life?

Accepted Answer

Castor oil polyoxyethylene ether EL-40 should be stored sealed in a cool (5°C~35°C), dry, and well-ventilated environment. In unopened original containers, the shelf life is typically 12 to 24 months. Detailed Description Castor oil polyoxyethylene ether EL-40 (PEG-40 Castor Oil) is a nonionic surctant with generally good chemical stability. However, as an ethoxylated product, improper storage conditions may lead to oxidation, moisture absorption, or hydrolysis of ester bonds, affecting the product's color, pH value, and emulsifying properties. Therefore, scientific and standardized storage management is key to ensuring stable product quality and extending its usable life. Regarding shelf life, the Guoli Chemical product database does not list specific shelf life data for this product. Based on general chemical industry standards and practical experience with similar nonionic surctants, when strictly following recommended storage conditions and keeping the container unopened, the shelf life of castor oil polyoxyethylene ether EL-40 is typically 12 to 24 months. After opening the product, it is recommended to use it within 6 months, and the container should be immediately sealed after each use to minimize contact with air. If the product is stored beyond the recommended period, it is not advisable to use it directly. Instead, it should first be tested for appearance, pH value, and key performance indicators (such as HLB value and emulsifying power). Only after confirming compliance can it be put into use. Additionally, prolonged storage or low temperatures may cause stratification or precipitation. This is usually not a sign of spoilage but a physically reversible process related to temperature changes in the micellar structure of nonionic surctants. After returning the product to room temperature and stirring thoroughly, it generally returns to a uniform state. However, if the product exhibits a distinct rancid odor, irreversible sedimentation, or abnormal darkening of color, it indicates chemical deterioration and should not be used. It must be disposed of according to chemical waste regulations. Storage Conditions Overview Storage Element Specific Requirements Storage Temperature Maintain between 5°C and 35°C; avoid extreme high temperatures (>40°C) and severe cold ( Environmental Requirements Cool, dry, well-ventilated; keep away from ignition sources, heat sources, and direct sunlight Container Requirements Keep container tightly sealed; use original containers or compatible corrosion-resistant containers (such as polyethylene, stainless steel, or plastic-lined iron drums) Prohibited Contact Avoid coexistence with strong oxidizers and strong acids; stay away from drainage systems and water sources to prevent accidental leakage into the environment Stacking Requirements Containers should be placed on stable pallets or shelves; avoid stacking too high to prevent lling and damage Floor Protection The storage area floor should be impermeable, with dikes or containment cilities to capture potential spills Application Recommendations To ensure optimal performance of the product after storage, it is recommended to follow the "first in, first out" principle in practical applications, prioritizing the use of earlier batches. For applications that require high emulsifying stability, such as textile printing and dyeing, pesticide formulations, and metalworking fluids, special attention should be paid to the consistency of product performance during the storage period. If the product is used in formulation development or critical quality steps, it is recommended to conduct small-scale emulsification tests before each use to verify that the product's activity has not declined due to storage ctors. Precautions This product is classified as an irritant (GHS07); the storage area should be equipped with emergency eyewash stations and safety showers. When opening and dispensing, wear chemical safety gloves and goggles to avoid skin and eye contact. In case of leakage, immediately cover and collect with inert absorbent materials (such as sand, vermiculite), seal in chemical waste containers for proper disposal; do not discharge into sewers or natural water bodies. The product is harmful to aquatic life and may cause long-lasting adverse effects to the aquatic environment (H412); waste must be sent to approved chemical waste treatment cilities for disposal.

Question 7

What safety precautions should be taken when using Castor Oil Polyoxyethylene Ether EL-40?

Accepted Answer

When using Castor Oil Polyoxyethylene Ether EL-40, it is essential to guard against skin and eye irritation, wear protective equipment during operation, and prevent the product from entering water bodies. Detailed Explanation Castor Oil Polyoxyethylene Ether EL-40 (PEG-40 Castor Oil) is a non-ionic surctant. Although its chemical properties are relatively mild, according to the GHS classification criteria, this product is classified as a skin irritant (Category 2) and eye irritant (Category 2), and also hazardous to aquatic life with long-lasting effects (Category 3). The signal word for the product is "Warning" and the hazard pictogram is GHS07 (exclamation mark). This means that standardized operating procedures must be established during use, and care should not be neglected simply because the product is non-flammable and not highly toxic. In practical applications, the risks of this product are mainly reflected in three aspects: First, direct contact can cause skin redness, pain, and other irritation reactions (H315); second, splashing into the eyes can lead to severe eye irritation and discomfort (H319); third, if discharged directly into water bodies without treatment, it will cause long-term chronic harm to aquatic ecosystems (H412). Therefore, safety protection and environmental management are indispensable regardless of the application scenarios, such as textile dyeing and printing, pesticide formulations, paint production, or daily chemical product manucturing. Safe Operation Guidelines Personal Protective Equipment Requirements Hand Protection: Chemical safety protective gloves must be worn. It is recommended to use nitrile rubber or neoprene rubber gloves to avoid direct skin contact with the product. Eye\/ce Protection: Wear protective goggles or a full-ce shield at all times, especially during pouring, mixing, or any operation that may cause splashing. Body Protection: Wear appropriate work clothes or protective clothing to avoid exposed skin contact. Contaminated clothing should be removed immediately and thoroughly washed before reuse. Hygiene Practices: After finishing work, hands and other exposed skin must be thoroughly washed with water and soap. Eating, drinking, or smoking in the work area is prohibited. Ventilation and Operating Environment Ensure the use area has a good ventilation system. If aerosols or vapors are generated during operation, use local exhaust ventilation to control airborne exposure concentrations below occupational exposure limits. It is recommended to equip the workplace with emergency eyewash stations and safety showers. Storage Precautions Store in a cool, dry, and well-ventilated place, keeping the container sealed. The storage temperature is recommended to be maintained between 5°C and 35°C, avoiding extreme high temperatures and severe cold to prevent product separation or deterioration due to freezing or overheating. Keep away from ignition sources, heat sources, and direct sunlight. Avoid storage with strong oxidizing agents and strong acids. Use original containers or corrosion-resistant containers made of compatible materials for storage. Containers should be placed securely, away from drainage systems and water sources. The storage area floor should have impermeable capabilities and be equipped with dikes or containment cilities to contain possible spills. First Aid Measures Exposure RouteFirst Aid Treatment Skin Contact Immediately remove contaminated clothing and flush the affected area with plenty of running water and soap for at least 15 minutes. If irritation symptoms (such as redness, pain) persist, seek medical attention immediately. Eye Contact Immediately lift the eyelids and rinse gently with plenty of running water or saline solution for at least 15 minutes. If contact lenses are worn and can be easily removed, remove them early during the rinse. Do not interrupt the rinsing process, and seek medical attention immediately. If eye irritation persists, repeatedly consult a doctor. Inhalation Quickly move the affected person to fresh air, maintain an open airway and body temperature. If breathing discomfort occurs, trained personnel should administer medical oxygen. If breathing stops, immediately perform artificial respiration and call emergency services. Ingestion Do NOT induce vomiting. If the victim is conscious, rinse the mouth thoroughly with water, and do not give anything by mouth. Immediately seek professional medical help and show the product container or Safety Data Sheet to the doctor. Spill Emergency and Waste Disposal In case of a spill, immediately isolate the spill area and non-emergency personnel should evacuate quickly. Responders must wear rubber gloves, chemical goggles, and protective clothing. Prevent the spill from entering soil, sewers, surce water, or groundwater systems. Cover and absorb with inert absorbent materials such as sand, vermiculite, then collect in sealed chemical waste containers and dispose of according to hazardous waste regulations. Waste chemicals and contaminated containers must be disposed of in accordance with local, national, and international environmental regulations. It is recommended to send them to an approved chemical waste treatment cility for high-temperature incineration. Do not discharge the product or its residues into municipal sewage systems or natural water bodies. Firefighting Tips Although this product is not classified as a flammable or explosive liquid, it can support combustion in a fire environment. Use carbon dioxide, dry chemical, foam, or water spray for firefighting. Firefighters should wear self-contained positive-pressure breathing apparatus and full protective clothing, and cool containers exposed to flames to prevent rupture. Thermal decomposition or combustion may produce carbon monoxide, carbon dioxide, and irritating fumes, which must be avoided from inhalation. Core Safety Mnemonic Wear gloves, goggles, and protective clothing — prevent skin and eye contact Good ventilation, temperature control, sealed containers — storage temperature preferably between 5°C ~ 35°C Prevent spills, prohibit direct discharge, proper waste disposal — protect aquatic ecology In case of contact, flush thoroughly, seek medical attention promptly — rinse for at least 15 minutes

Question 8

How to use Castor Oil Polyoxyethylene Ether EL-40? What is the recommended addition amount?

Accepted Answer

The addition amount of Castor Oil Polyoxyethylene Ether EL-40 is usually 1% to 10% of the total formulation, depending on the application field; as an O/W emulsifier, it can be directly added to the water phase or oil phase, stirred evenly before use. Detailed Description Castor Oil Polyoxyethylene Ether EL-40 (PEG-40 Castor Oil) is a nonionic surctant produced by Guoli Chemical, with an HLB value between 12.5 and 13.5 (data source: Guoli Chemical product database). It is easily soluble in water and suitable for use as an oil-in-water (O/W) emulsifier. During use, this product can be directly added to the water phase or oil phase. It is recommended to add slowly under stirring conditions. If necessary, heat the oil phase and water phase to 40~60°C separately before mixing and emulsifying to obtain a more uniform and stable emulsion system. Due to its high active content (≥99%), it is a viscous liquid at room temperature (kinematic viscosity 400-600 mPa·s, 25°C), and its fluidity decreases at low temperatures. It is recommended to warm the product to 15~35°C before use for accurate weighing and dispersion. If multiple surctants are combined in the formulation, EL-40 has good compatibility with anionic, cationic, and other nonionic additives, and can synergistically perform emulsification and dispersion functions. It should be noted that the pH of a 1% aqueous solution of this product is 5.0-7.0, which is nearly neutral and has little effect on the acidity or alkalinity of the formulation system; its cloud point is ≥100°C, offering excellent high-temperature resistance, suitable for processes requiring heating operations. The critical micelle concentration (CMC) is only 0.01%-0.05%, meaning that micelles can form at very low concentrations, resulting in high usage efficiency. Recommended Addition Amounts by Field The following recommended addition amounts are industry reference values; specific dosages need to be determined through experiments based on the actual formulation and performance requirements: Application FieldFunctional RoleRecommended Addition Amount (as % of total formulation) Textile Printing and DyeingEmulsifier, Leveling Agent, Antistatic Agent1%~5% Pesticide Formulations (EC/EW)Emulsifying Dispersant3%~10% Coatings, InksPigment Wetting and Dispersing Agent0.5%~3% Metalworking FluidsEmulsifier and Lubricant2%~8% Daily Chemical Products (Creams/cial Cleansers, etc.)Mild Emulsifier, Solubilizer1%~5% Notes: When used as the primary emulsifier in pesticide formulations, the dosage is usually 5%-15% of the oil phase (technical material + solvent) mass; for solubilizing essential oils in daily chemical products, it is recommended to add EL-40 at 3-5 times the amount of essential oil. The above are industry empirical values; the optimal dosage should be determined through orthogonal experiments or phase diagram analysis. Technical Parameters ParameterValue Ionic TypeNonionic HLB Value12.5~13.5 AppearanceLight yellow to yellow transparent liquid Active Content≥99% Cloud Point (1% Aqueous Solution)≥100°C pH of 1% Aqueous Solution (25°C)5.0-7.0 Kinematic Viscosity (25°C)400-600 mPa·s Density (25°C)1.04-1.06 g/cm³ SolubilityEasily soluble in water, ethanol, ether, etc. Flash Point＞200°C CMC (Critical Micelle Concentration)0.01%-0.05% Safety and Handling Reminders This product is classified as an irritant (GHS07). Wear protective gloves and goggles during handling to avoid direct skin and eye contact. Use in a well-ventilated area; if aerosols or vapors are generated, activate local exhaust ventilation. Storage temperature should be maintained between 5°C and 35°C. Keep containers tightly closed, away from strong oxidizers and strong acids. When adding large amounts, adopt a stepwise addition method to avoid local high concentration leading to gelation or phase inversion. Wastewater from equipment cleaning should be collected and treated collectively; do not discharge directly into water bodies.

Question 9

What are the main industries and processes where Castor Oil Polyoxyethylene Ether EL-40 is applied?

Accepted Answer

With its excellent emulsifying, wetting, dispersing, and compatibility properties, Castor Oil Polyoxyethylene Ether EL-40 is widely used in five core industries: textile printing and dyeing, pesticide formulations, coatings and inks, metalworking fluids, and daily chemicals. Detailed Description Castor Oil Polyoxyethylene Ether EL-40 (PEG-40 Castor Oil) is a nonionic surctant produced by ethoxylation of natural castor oil. Its molecular structure contains both hydrophilic and lipophilic groups, with a moderate HLB value, enabling the formation of stable oil-in-water (O/W) emulsion systems. The product is resistant to hard water, acids, and alkalis, and exhibits good compatibility with anionic, cationic, and nonionic auxiliaries, allowing it to function stably in various industrial formulations. In practical applications, the core value of EL-40 lies in its "multi-functionality" — it not only serves as an efficient emulsifier to stably disperse oily components in the aqueous phase but also provides auxiliary functions such as wetting, penetration, dispersion stabilization, antistatic properties, and lubrication. Below are its specific process applications in various industries. Overview of Industry and Process Applications Application Industry Specific Process/Use Function Textile Printing and Dyeing Industry Dye leveling, fiber pretreatment, finishing Acts as an emulsifier and leveling agent, ensuring uniform dye penetration and reducing color spots; provides antistatic properties to improve fiber processing feel and smoothness; serves as an emulsifying component in spinning oils. Pesticide Formulations Preparation of emulsifiable concentrates (EC), emulsions in water (EW), microemulsions (ME) As an emulsifying dispersant, it stably disperses oily active ingredients in water, enhancing the wetting and spreading ability of the spray liquid on target surces, thereby significantly improving efficacy and utilization. Coatings, Inks, and Pigments Pigment grinding and dispersion, emulsion polymerization, color paste preparation As a wetting dispersant, it significantly improves the dispersion fineness and color development of pigments and fillers, prevents flocculation and floating color, and enhances product storage stability and tinting strength. Metalworking Fluids Preparation of cutting fluids, grinding fluids, hydraulic fluids Exerts dual emulsifying and lubricating effects, assisting in forming a stable working emulsion system, reducing friction heat, extending tool life, protecting workpiece surces, and providing some rust prevention performance. Daily Chemicals Skin creams, cial cleansers, makeup removers, emulsifying wax preparation As a mild nonionic surctant, it contributes solubilizing, emulsifying, and cleansing efficiency; imparts a soft and smooth feel to products while reducing overall formulation irritation. Application Recommendations EL-40 is suitable for formulation systems with a wide pH range. It is recommended to add it by pre-mixing in either the oil phase or the water phase during the formulation mixing stage. In the textile industry, the recommended dosage is 0.5% to 2% of the working solution. In pesticide formulations, as a component of composite emulsifiers, it usually accounts for 5% to 15% of the total formulation, often combined with anionic emulsifiers to optimize emulsification effects. In coating color pastes, the recommended dosage is 3% to 8% of the pigment mass. In daily chemical formulations, depending on the product type, the recommended addition amount is 1% to 5%. The specific dosage should be optimized through trials based on the actual formulation and process conditions. Precautions Safety: This product is classified as a skin and eye irritant (H315, H319). Protective gloves, goggles, and protective clothing must be worn during handling to avoid direct contact. Environmental protection: It is harmful to aquatic life with long-lasting effects (H412). Do not discharge untreated product directly into water bodies or sewers. Storage conditions: Recommended storage temperature is between 5°C and 35°C. Keep containers tightly closed and store in a cool, dry, well-ventilated place away from direct sunlight and extreme temperatures. Compatibility: It is compatible with anionic, cationic, and nonionic surctants, but compatibility tests should be conducted in advance for systems containing strong oxidizers or strong acids.

Question 10

What are the physicochemical technical parameters of Castor Oil Polyoxyethylene Ether EL-40?

Accepted Answer

Castor Oil Polyoxyethylene Ether EL-40 (CAS: 61791-12-6) is a nonionic surctant with an HLB value of 12.5~13.5, appearing as a light yellow to yellow transparent liquid. It exhibits excellent emulsifying, wetting, and dispersing properties, and can be widely used in various industrial fields such as textiles, pesticides, and coatings. Detailed Description Castor Oil Polyoxyethylene Ether EL-40, with the full chemical name Polyoxyethylene (40) Castor Oil Ether (PEG-40 Castor Oil), is produced by ethoxylation of natural castor oil. Its molecular formula is approximately C57H104O9(C2H4O)n (n≈40), and the molecular weight is about 2500. The product is chemically stable under normal storage conditions, resistant to hard water, acids, and alkalis, and has good compatibility with anionic, cationic, and other nonionic surctants, making it an ideal choice for constructing oil-in-water (O/W) emulsion systems. This product is soluble in water, ethanol, ether, and many other solvents. The pH value of a 1% aqueous solution is between 5.0 and 7.0, showing weak acidity to neutrality. The cloud point is ≥100°C, indicating high temperature stability in aqueous solution. The surce tension is about 32 mN/m (1% aqueous solution, 25°C), and the critical micelle concentration (CMC) ranges from 0.01% to 0.05%. It has low foaming properties, which minimizes operational interference in practical applications, especially in textile printing, dyeing, and metalworking industries. In terms of product quality indicators, the active content is ≥99%, moisture ≤0.5%, acid value ≤0.5 mgKOH/g, saponification value ≤10 mgKOH/g, hydroxyl value between 60 and 75 mgKOH/g, and iodine value between 25 and 35 gI2/100g. Physical constants such as density (1.04~1.06 g/cm³), refractive index (1.465~1.475, 20°C), and viscosity (400~600 mPa·s, 25°C) are fully recorded in our company's database and can serve as important references for raw material testing and formulation design. Technical Parameters Parameter CategoryParameter NameSpecification/Value Basic InformationChinese NameCastor Oil Polyoxyethylene (40) Ether English NamePEG-40 Castor Oil / Castor oil ethoxylated CAS Number61791-12-6 Ionic TypeNonionic Surctant Molecular FormulaC57H104O9(C2H4O)n, n≈40 Molecular WeightApprox. 2500 AppearanceAppearanceLight yellow to yellow transparent liquid StateViscous liquid, no obvious melting point Core Physical PropertiesHLB Value12.5 ~ 13.5 Cloud Point (℃)≥ 100 pH Value (1% Aqueous Solution)5.0 ~ 7.0 pH Value (5% Aqueous Solution)5.0 ~ 7.0 Surce Tension (1% Aqueous Solution, 25℃)Approx. 32 mN/m Critical Micelle Concentration (CMC)0.01% ~ 0.05% Chemical IndicatorsActive Content (%)≥ 99 Water Content (%)≤ 0.5 Acid Value (mgKOH/g)≤ 0.5 Saponification Value (mgKOH/g)≤ 10 Hydroxyl Value (mgKOH/g)60 ~ 75 Iodine Value25 ~ 35 gI2/100g Physical ConstantsDensity (g/cm³)1.04 ~ 1.06 Refractive Index (20℃)1.465 ~ 1.475 Dynamic Viscosity (mPa·s, 25℃)400 ~ 600 Flash Point (℃)> 200 HygroscopicityHygroscopic Performance PropertiesFoam CharacteristicsLow Foam Alkali StabilityAlkali Resistant Health and SafetyHeavy Metal Content (ppm)≤ 10 Arsenic Content (ppm)≤ 2 Packaging Specifications50kg Plastic Drum 200kg Plastic Drum IBC Tote Application Suggestions According to the database of Guoli Chemical, EL-40, with its hydrophilic HLB value of 12.5~13.5 and excellent emulsifying and dispersing capabilities, has mature application cases in the following areas: Textile Printing and Dyeing: Used as a leveling agent and antistatic agent. Recommended dosage is 0.5%~2% of the working solution, effectively improving dye penetration uniformity and fiber smooth feel. Pesticide Formulations: Used as an emulsifying dispersant for oily active ingredients. Recommended addition of 5%~15% in emulsifiable concentrates or microemulsions to ensure the liquid wets and spreads on the target surce, improving control efficiency. Coatings and Inks: Used as a pigment wetting dispersant, added at 2%~5% of the pigment weight, preventing flocculation and floating, significantly improving storage stability and color development. Metalworking Fluids: With both emulsifying and lubricating functions, recommended dosage of 3%~10% when preparing cutting fluids, helping to form stable processing emulsions, reducing frictional heat, and protecting tools and workpieces. Daily Chemicals: Used as a mild nonionic emulsifier in creams, cial cleansers, and other formulations, recommended addition of 2%~8%, imparting a soft touch to the product and reducing system irritation. Precautions Safety: This product is classified under GHS as Skin Irritation Category 2, Eye Irritation Category 2, and Aquatic Chronic Hazard Category 3. When handling, wear chemical protective gloves, goggles, and protective clothing to avoid direct contact with skin and eyes. In case of accidental eye contact, flush immediately with plenty of water for at least 15 minutes and seek medical attention promptly. Storage Conditions: Recommended to store in a cool, dry, and well-ventilated place.

Castor Oil Ethoxylate EL-40

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Castor Oil Ethoxylate Applications

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Property	Value
CAS No.	61791-12-6
Molecular Formula	C57H104O9(C2H4O)n, n≈40
Appearance	Pale yellow to yellow transparent liquid
Ionic Type	Nonionic
Avg. Molecular Weight	~2500
Cloud Point	≥100
Active Content	≥99
pH Value(1%)	5.0-7.0
pH Value(5%)	5.0-7.0
Iodine Value	25-35
Solubility	Readily soluble in water, ethanol, ethyl ether and other organic solvents
Surface Tension	~32 (1%aq. soln., 25°C)
CMC	0.01-0.05%
Acid Value	≤0.5
Saponification Value	≤10
Hydroxyl Value	60-75
Moisture	≤0.5
Density	1.04-1.06
Kinematic Viscosity	400-600 (25°C)
Refractive Index	1.465-1.475 (20°C)
Flash Point	>200
Hygroscopicity	Hygroscopic
Chemical Stability	Stable under normal conditions
Penetration	Moderate
Foam Property	Low foam
Alkali Resistance	Alkali resistant
Unsaturation	Low
Viscosity	Viscous liquid
Melting Point	Liquid; no distinct melting point
Low Shear Viscosity	400-600 mPa·s (25℃)
Solid Content	≥99
Free Alcohol	≤0.5
Heavy Metal	≤10
Arsenic	≤2

Castor Oil Ethoxylate EL-40

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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