Question 1

Is stearic acid polyoxyethylene ether SG-9 harmful to the human body? Does it have an impact on the environment?

Accepted Answer

Stearic acid polyoxyethylene ether SG-9 is a low-toxicity, non-hazardous substance, with irritation as the main effect on the human body, and it has certain hazards to aquatic organisms but is readily biodegradable, showing overall good safety. Detailed Explanation Stearic acid polyoxyethylene ether SG-9 (PEG-9 stearate) is a nonionic surctant, not listed under GHS hazardous chemical classification, and is not considered a dangerous good. From an acute toxicity perspective, its oral LD50 in rats is greater than 2000 mg/kg, indicating low toxicity. The Ames test is negative, showing no mutagenicity, and under normal use conditions, it does not cause severe systemic poisoning hazards to the human body. The main potential impact on human health centers on local irritation. According to risk phrases R36/37/38, this product is irritating to the eyes, respiratory system, and skin. Animal experimental data show: skin contact in rabbits for 4 hours results in mild irritation, and eye contact in rabbits results in moderate irritation. Therefore, during industrial operations or formulation use, accidental eye contact may cause significant discomfort and requires immediate flushing; it may also cause mild erythema or dryness in sensitive individuals. However, due to significant dilution in the final product (e.g., cosmetic formulations), this irritation is usually markedly reduced. From an environmental perspective, the LC50 (96h for fish) of this product for aquatic organisms is 10–100 mg/L, indicating some hazard to aquatic organisms, and large direct discharges into water bodies could affect aquatic ecosystems. However, it is commendable that this product is readily biodegradable (biodegradation rate >60% under OECD 301B method), does not accumulate long-term in the natural environment, and the overall environmental risk is manageable. The key is to properly collect and treat industrial wastewater and spillage to avoid direct discharge untreated into soil, drains, sewers, and natural water bodies. Technical Parameters Assessment DimensionIndicatorData Human HealthAcute Toxicity (Rat Oral LD50)>2000 mg/kg, low toxicity Skin Irritation (Rabbit, 4h)Mild irritation Eye Irritation (Rabbit)Moderate irritation Mutagenicity (Ames Test)Negative, no mutagenicity Environmental ImpactEcotoxicity LC50 (Fish, 96h)>10–100 mg/L, harmful to aquatic organisms Biodegradability (OECD 301B)>60%, readily biodegradable Heavy Metal Content≤10 mg/kg (Arsenic ≤2 mg/kg) Hazard ClassificationGHS ClassificationNot classified, non-hazardous Risk PhrasesR36/37/38Irritating to eyes, respiratory system, and skin Application Recommendations Based on the above safety and environmental characteristics, proper usage recommendations for stearic acid polyoxyethylene ether SG-9 are as follows: Industrial Operation Protection: In direct contact processes such as feeding and packaging, wear chemical safety goggles, chemical-resistant gloves, and protective clothing; maintain good ventilation in the workplace to avoid inhalation of dust or mist. Thoroughly wash hands and exposed skin after operation. Formulation Application Safety: When used as an emulsifier in cosmetics, textile auxiliaries, and pesticide formulations, after dilution and compounding, the irritation is significantly reduced, making it a safe and compliant industrial raw material. In cosmetic applications, conventional addition levels meet safety requirements. Wastewater Treatment: Industrial wastewater containing this product should be treated in a wastewater treatment system to meet discharge standards before release; direct discharge is not allowed. Due to its ready biodegradability, conventional biological treatment processes can effectively remove it. Spill Handling: Small spills: collect with inert absorbent and seal in a closed container for disposal; large spills: isolate the area, prevent entry into drains and water bodies, and dispose of waste according to local regulations. Precautions Although the LD50 indicates low toxicity, it is strictly prohibited for ingestion, and industrial grade products must not be used directly in food. If eye contact occurs, immediately flush with plenty of running water for at least 15 minutes and seek medical attention, as it has moderate eye irritation. Storage temperature is recommended to be ≤35°C, away from strong oxidizers and strong acids and other incompatible substances. Combustion may produce harmful gases such as carbon monoxide; firefighters should wear self-contained breathing apparatus when extinguishing fires. Although the product is readily biodegradable, the precautionary principle of "avoid release into the environment" should still be followed, and proper management of industrial waste (gas, liquid, solid) is necessary. (All data above are sourced from Guoli Chemical Product Technical Data Sheet and Safety Data Sheet.)

Question 2

What should I do if problems occur during the use of Stearic Acid Polyoxyethylene Ether SG-9? How to obtain technical support?

Accepted Answer

When encountering problems with Stearic Acid Polyoxyethylene Ether SG-9, it is recommended to solve them step by step from three levels: on-site investigation, product verification, and contacting the manucturer's technical support. Detailed Description Stearic Acid Polyoxyethylene Ether SG-9 (PEG-9 Stearate) is a nonionic surctant. Problems that may be encountered during use usually focus on poor emulsification, product delamination, incomplete dissolution, batch-to-batch performance differences, etc. Most problems are not quality defects of the product itself but are related to formulation design, process operation or storage conditions. It is recommended to follow the idea of "self-check first, consult later". First, check whether the product appearance is normal - normally it should be a white to slightly yellow waxy solid. If there is obvious discoloration (such as dark yellow, brown), peculiar smell or severe caking, it may have deteriorated due to high temperature, moisture or long-term storage. Second, confirm whether the usage conditions meet the product characteristics: the HLB value of SG-9 is about 11~12, suitable for O/W emulsification systems; if used in W/O systems, the effect may be poor. Also check whether the system pH, water hardness, and operating temperature are within reasonable ranges. This product is stable over a wide pH range and resistant to hard water, but extreme conditions may still affect performance. If the problem is still not resolved after the above investigation, it is necessary to contact Hai'an Guoli Chemical Co., Ltd. to obtain formal technical support. Guoli Chemical provides customers with a professional technical service system that can assist in formulation optimization, alternative solution recommendations and product quality traceability. Technical Parameters Parameter Item Reference Value/Description Product Appearance White to slightly yellow waxy solid Ionic Type Nonionic surctant HLB Value About 11~12 CAS No. 9004-99-3 Solubility Dispersible in hot water, soluble in ethanol and other organic solvents Compatibility Compatible with anionic, cationic, nonionic surctants pH Stability Range Stable over a wide pH range Recommended Storage Temperature Not exceeding 35°C, cool, dry and ventilated place Application Suggestions Common problems and corresponding solutions: Emulsion delamination or instability: Check whether the ratio of oil phase to water phase is reasonable, and whether the HLB value matches the required value of the oil phase; try adjusting the dosage of SG-9 or mixing with emulsifiers of different HLB values. Product difficult to dissolve or disperse: SG-9 is a waxy solid. It is recommended to stir and dissolve it in hot water (about 60~70°C) or pre-melt it before adding to the system, avoiding direct addition to cold water. Rough paste or precipitation in cosmetic formulations: Check the emulsification temperature curve and homogenization process parameters to ensure emulsification when the oil phase and water phase temperatures are consistent; adjust the mixing ratio of SG-9 with other emulsifiers if necessary. Unsatisctory antistatic effect in textile oils: Confirm whether the addition amount is sufficient; appropriately increase the dosage or use in synergy with antistatic agents; check environmental humidity, as too low humidity can affect the antistatic effect. Poor thermal storage stability of pesticide formulations: Consider mixing SG-9 with other emulsifiers (e.g., anionic types) to optimize the emulsifier combination and improve thermal storage stability. How to Obtain Technical Support To obtain formal technical support from Hai'an Guoli Chemical Co., Ltd., it is recommended to contact through the following channels: Product batch traceability: Prepare the batch number and production date on the product packaging so that technical personnel can quickly locate production records and quality inspection data. Problem description materials: Organize detailed description of abnormal phenomena, including formula used, operating process parameters (temperature, pH, feeding sequence, etc.), specific manifestations of the problem, attach photos or retain samples if necessary. Contact channels: Through the contact information (phone/email) on Guoli Chemical's official website or directly contact your sales representative, and report the problem to the technical department. The technical team usually provides formulation adjustment suggestions, product replacement plans or arranges sample re-inspection. Sample shipping: If product quality abnormality is suspected, send samples of the problematic batch to Guoli Chemical's quality inspection department for re-inspection to confirm whether they meet the ctory standards. Precautions When handling SG-9, it is recommended to wear chemical safety goggles and chemical-resistant gloves to avoid prolonged skin contact and dust inhalation. In case of accidental eye contact, rinse immediately with plenty of water for at least 15 minutes and seek medical advice (safety phrase S26). When changing product batches, it is recommended to conduct small-scale validation first to confirm compatibility with the existing formulation system and performance consistency before putting into mass use. Storage beyond recommended conditions (>35°C, direct sunlight, moisture) may lead to performance degradation. Products beyond the shelf life are not recommended for use.

Question 3

How to purchase Stearic Acid Polyoxyethylene Ether SG-9? What is the minimum order quantity?

Accepted Answer

Price negotiable, please contact Guoli Chemical sales team for the latest quotation and minimum order quantity. Detailed Description Stearic Acid Polyoxyethylene Ether SG-9 (PEG-9 Stearate, CAS: 9004-99-3) is a conventional industrial surctant product of Guoli Chemical, appearing as white to light yellow flake solid. The product packaging specifications are diverse to meet different procurement needs. Currently, no fixed price is publicly listed online; the latest quotation is subject to actual inquiry. Regarding the minimum order quantity (MOQ), there is no clear data in the product database. However, from the packaging specifications, the smallest package is 50kg plastic drum, with other options including 200kg plastic drum and IBC tote (approx. 1000kg). It is recommended that customers with smaller demand start with the 50kg specification. For specific order policies, please confirm directly with the sales team. Packaging Specifications Packaging TypeSpecificationApplication Scenario Plastic drum50kgSmall batch trial or laboratory formulation development Plastic drum200kgRoutine industrial production batch purchase IBC toteApprox. 1000kgLarge-scale continuous production, higher cost-effectiveness Purchasing Method Guoli Chemical provides direct manucturer sales service. It is recommended to contact procurement through the following channels: Phone inquiry: Call the official sales hotline of Hai'an County Guoli Chemical Co., Ltd. to get one-on-one quotation and technical support. Online inquiry: Submit an inquiry form through the Guoli Chemical official website or B2B platform, specifying the product name (Stearic Acid Polyoxyethylene Ether SG-9), required quantity and application, and the sales team will respond as soon as possible. Sample request: If formula verification is needed, you can apply for free sample testing, and then proceed with batch purchase after performance confirmation. Notes Product price is affected by raw material market, purchase quantity, packaging method, transportation distance and other ctors. The above information is for reference only. For actual price, please contact the sales team. The storage temperature of this product is recommended not to exceed 35℃. It should be stored in a cool, dry, well-ventilated warehouse, keeping the container tightly closed. Before purchase, please confirm whether the product specifications (HLB value about 11~12, non-ionic) meet your application requirements. For details, refer to the Product Technical Data Sheet (TDS).

Question 4

Does Polyoxyethylene Stearate SG-9 meet environmental requirements? Can you provide a test report?

Accepted Answer

Under the premise of compliant use and proper disposal, Polyoxyethylene Stearate SG-9 can be considered to meet basic environmental requirements, with its core basis being easy biodegradability. Detailed Description The environmental friendliness of Polyoxyethylene Stearate SG-9 (PEG-9 Stearate) is mainly reflected in its excellent biodegradability. According to the environmental information in the Guoli Chemical product database, the product was tested under OECD 301B standard, with a biodegradation rate greater than 60%, classifying it as "readily biodegradable." This means that in the natural environment, it can be quickly broken down by microorganisms into harmless substances such as water and carbon dioxide, without long-term persistence and accumulation in the ecosystem. However, it must be noted that this product has some acute toxicity to aquatic organisms. The database shows that its fish acute toxicity LC50 (96h) is in the range of 10–100 mg/L, placing it in the "harmful to aquatic life" category. Therefore, despite its biodegradability, the waste liquid after use must be strictly treated in accordance with regulations. Untreated wastewater must not be directly discharged into soil, drains, sewers, and natural waterways to prevent immediate harm to local aquatic life. In terms of product safety classification, Polyoxyethylene Stearate SG-9 is a non-hazardous substance and is not listed under the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). Its acute toxicity is very low (rat oral LD50 > 2000 mg/kg), and the Ames mutagenicity test result is negative. Overall, the product itself is low-toxicity and easily biodegradable. Its environmental compliance depends primarily on whether the treatment of the "three wastes" (especially wastewater) meets local environmental regulations. Technical Parameters (Environmentally Related) Indicator Item Specification/Data Environmental Significance and Description Biodegradability Readily biodegradable (>60%, OECD 301B method) Core environmental indicator, showing the product can quickly decompose in the environment and is not persistent. Ecotoxicity (LC50, Fish, 96h) >10 – 100 mg/L Clearly indicates that high concentrations of the product are harmful to aquatic organisms in case of spillage, requiring strict control of water pollution. Total Heavy Metals ≤ 10 mg/kg Very low heavy metal content, meeting the common standards for green chemical products. Arsenic Content (As) ≤ 2 mg/kg Strict control of harmful element content, reducing potential risks to soil and water bodies. Hazard Classification Non-hazardous, not listed under GHS classification Meets the convenience and safety standards for non-hazardous chemicals in transportation, storage, and routine handling. Application Recommendations To maximize the environmental advantages of the product and avoid environmental risks, it is recommended that you during use: Source Control: Accurately measure the dosage to avoid overuse and reduce the concentration of residual chemicals in waste liquid. Wastewater Treatment: In industrial scenarios such as textiles and metal processing, wastewater containing this product must be discharged into the plant's wastewater treatment station and treated by effective processes (e.g., activated sludge method) to meet discharge standards before release. Formulation Design: When developing end products such as cosmetics and pesticide formulations, leverage its easy biodegradability to help your products comply with increasingly stringent environmental regulations (e.g., EU REACH). Regarding Test Reports Regarding your request to "provide a test report," Guoli Chemical can provide a Certificate of Analysis (COA) tied to its unique production batch at the time of shipment. The COA contains actual measured data for key indicators such as active content, pH value, acid value, and heavy metals as listed in the above technical parameter table. Additionally, as a regulatory document, we can also provide a detailed Safety Data Sheet (SDS), where Section 12 details ecological toxicology and degradation environmental information. To request a COA or SDS for a specific batch, please contact the Guoli Chemical Sales Department and provide your product batch number.

Question 5

What are the advantages of Stearic Acid Polyoxyethylene Ether SG-9 compared to other similar products?

Accepted Answer

According to the technical data from Guoli Chemical, the core advantages of Stearic Acid Polyoxyethylene Ether SG-9 compared to other similar products (such as SG-6, SG-10, SG-40, etc.) lie in its **precise hydrophilic-lipophilic balance (HLB value around 11-12), high monoester content (≥80%), and the resulting excellent emulsifying stability and multi-field compatibility.** Below is a detailed comparative analysis based on database information: ### 1. Core Advantage Comparison: Structure and Performance Positioning The performance of the Stearic Acid Polyoxyethylene Ether series (SG series) is primarily determined by the number of ethylene oxide (EO) units added. SG-9 has an EO number of 9, placing it at a "golden balance point." | Product Comparison | EO Number Difference | HLB Value Trend | Physical Form | Core Advantage of SG-9 | | :--- | :--- | :--- | :--- | :--- | | **SG-6** | Lower than 9 | Lower than 11 | More lipophilic | **SG-9 has better water solubility, a wider emulsification range,** and can form a stable dispersion system in water without heating, offering easier operation. | | **SG-10** | Slightly higher than 9 | Slightly higher than 12 | Similar | Performance is very close, but **SG-9’s solidification point and melt viscosity are easier to control,** making it more convenient for metering and mixing in flake solid feeding scenarios. | | **SG-40** | Much higher than 9 | Higher than 16 | Softer or semi-solid at room temperature | **SG-9 has superior washing and degreasing performance,** while also offering better cost-effectiveness. | ### 2. Specific Technical Parameter Advantages (Based on Guoli Chemical Database) According to the database, SG-9 possesses the following hard indicators that directly translate into application advantages: | Key Indicator | Specification & Value | Your Benefit | | :--- | :--- | :--- | | **Monoester Content** | **≥ 80%** | Monoester content is the gold standard for measuring nonionic quality. High monoester means **higher emulsification efficiency,** requiring less addition to achieve equivalent stable emulsion. | | **HLB Value** | **Approx. 11.6** | Precisely positioned in the O/W (oil-in-water) emulsification region, **offering the widest emulsification range,** suitable for most light oils, mineral oils, and ts. | | **Active Content** | **≥ 99%** | Extremely high active ingredient, reducing the impact of ineffective fillers on the formulation, and making transportation and storage more economical. | | **Acid Value** | **≤ 2** | Very low acid value indicates complete esterification reaction, high product purity, and is milder and less irritating to metal parts and sensitive skin. | | **Cloud Point** | **85-95℃** | Moderate cloud point ensures stability during high-temperature emulsification processes, preventing precipitation and separation. | | **Foaming Characteristics** | **Low Foam** | Aligns with the "low foam" trend in modern industrial cleaning and metalworking fluids, reducing the need for additional defoamers. | ### 3. Application Advantage Summary - **Excellent Formulation Flexibility**: Due to its nonionic nature, SG-9 **can be compounded with anionic, cationic, and various auxiliary agents** without charge conflicts leading to precipitation. - **Hard Water and Acid-Alkali Resistance**: It remains stable over a wide pH range and in hard water conditions, unlike soap-based products that tend to form lime soap precipitates, which is crucial in textile and metal processing. - **Dual Functions of Antistatic and Softening**: When used specifically in textile oils, SG-9 not only eliminates static electricity but also imparts a soft hand feel to brics, an added feature not available with many pure emulsifiers. ### Precautions - **Not Resistant to Strong Alkalis**: Although it tolerates weak acids and alkalis, it may hydrolyze in strong alkaline systems (e.g., high-concentration caustic soda solutions); long-term storage requires caution. - **Irritation Protection**: While it is low in toxicity, the product is moderately irritating to the eyes; please wear protective goggles when feeding.

Question 6

How to store Polyoxyethylene Stearate SG-9? What is the shelf life?

Accepted Answer

Polyoxyethylene Stearate SG-9 should be stored in a cool, dry, well-ventilated warehouse, sealed and protected from light, with a temperature not exceeding 35°C; under standard storage conditions, the shelf life of unopened products is usually 2 years. Detailed Description Polyoxyethylene Stearate SG-9 (PEG-9 Stearate) is a chemically stable nonionic surctant, resistant to acids, alkalis, and hard water, and is not prone to deterioration under conventional storage environments. However, due to its appearance as a white to light yellow flaky solid (melting point 28–35°C), softening or caking may occur at higher temperatures, making storage temperature control particularly critical. When stored unopened and strictly under recommended conditions, the recommended shelf life of this product is 2 years (from the date of manucture). After the shelf life expires, it is recommended to sample and test key indicators (such as acid value ≤2 mgKOH/g, saponification value 90–100 mgKOH/g, moisture ≤0.5%, etc.) to confirm performance before continued use. Currently, the Guoli Chemical product database has no official statement on a specific shelf life; the above recommendation is based on the product's chemical stability and common industry practices. Storage Condition Parameters Storage ConditionSpecific Requirements Storage TemperatureShould not exceed 35°C; avoid large temperature differences to prevent caking or softening Environmental RequirementsCool, dry, well-ventilated; avoid direct sunlight and moisture Container SealingContainer must be kept sealed to prevent moisture absorption and foreign matter entry Materials to AvoidKeep away from heat sources, ignition sources, and incompatible substances (such as strong oxidizers and strong acids) Recommended Packaging MaterialsStainless steel drums, polyethylene drums, fiber drums with plastic liners Leak Prevention MeasuresStorage area should be equipped with leak prevention cilities and containment materials (such as inert absorbents) Access ManagementUnauthorized personnel shall not enter the storage area; limited storage quantities shall be implemented Application Recommendations After opening the container, reseal the remaining product as soon as possible to avoid prolonged exposure to air and moisture absorption. If abnormal conditions such as significant color darkening, severe caking, or unusual odors are observed, it is recommended to stop use and perform quality re-inspection. For bulk purchases, it is advisable to follow the "first-in, first-out" principle to ensure inventory products are always circulated within their validity period. Precautions This product has low hygroscopicity, but prolonged exposure to high humidity environments may still cause moisture absorption leading to caking, affecting ease of use and dosing accuracy. In addition, frequent temperature fluctuations in storage may cause the product surce to "sweat" or partially melt and then re-solidify; it is recommended to keep the warehouse temperature within a relatively constant range. Although the product is not classified as a hazardous chemical and poses no special risks during conventional transportation, exposure to high temperatures, sunlight, rain, and moisture should still be avoided.

Question 7

What safety precautions should be taken when using Stearic Acid Polyoxyethylene Ether SG-9?

Accepted Answer

When using Stearic Acid Polyoxyethylene Ether SG-9, the core safety precaution is to implement personal protection to avoid irritating damage to eyes, skin, and respiratory tract, and to prevent leakage into the environment. Hazard Overview Stearic Acid Polyoxyethylene Ether SG-9 is a non-hazardous substance and is not classified under GHS, but its main risk is irritation to eyes, respiratory system, and skin (R36/37/38). Specific manifestations: mild skin irritation, moderate eye irritation. Its acute toxicity is low, with rat oral LD50 >2000 mg/kg, and it is non-mutagenic. Although this product is relatively safe, it still needs to be operated according to specifications. Detailed Safety Operation and Storage Guide In daily operations, good protective habits must be established. First, wear appropriate protective clothing, chemical safety goggles, and chemical-resistant gloves to avoid product contact with eyes, skin, and clothing. After operation, wash hands thoroughly. The workplace should maintain good ventilation to avoid inhaling dust or mist. If dust is heavy, it is recommended to wear a dust mask. Eating, drinking, and smoking are prohibited during operation, and keep away from fire and heat sources. For product storage, choose a cool, dry, well-ventilated warehouse, away from fire, heat sources, and incompatible substances such as strong oxidizers and strong acids. Containers must be kept tightly sealed, avoiding moisture and direct sunlight. Recommended storage temperature is not exceeding 35°C. Packaging should be made of corrosion-resistant materials such as stainless steel, polyethylene, or fiber drums with plastic lining. The storage area should be equipped with spill containment cilities. Emergency Treatment Measures In case of accidental contact, immediate first aid is crucial: Eye contact: Immediately separate eyelids and flush with plenty of running water or normal saline for at least 15 minutes, and seek medical attention as soon as possible. Skin contact: Remove contaminated clothing and thoroughly wash skin with soap and plenty of water. If irritation persists, seek medical attention. Inhalation: Move the person to fresh air immediately and keep airway clear. If breathing is difficult, administer oxygen. If breathing stops, perform artificial respiration immediately and seek medical attention. Ingestion: Do NOT induce vomiting. Rinse mouth and drink 1-2 glasses of water, then seek medical attention immediately. In case of leakage, small spills can be collected with clean tools and treated with inert absorbent; large spills require isolation of the area, collection by personnel wearing protective equipment using explosion-proof equipment, and disposal as waste. Do NOT allow entry into sewers or waterways. For firefighting, this product may produce harmful gases such as carbon monoxide when burning. Conventional extinguishing agents such as water spray, dry powder, carbon dioxide can be used. Firefighters should wear self-contained breathing apparatus. Environmental and Disposal Considerations Stearic Acid Polyoxyethylene Ether SG-9 is readily biodegradable, but it is harmful to aquatic organisms (fish 96h-LC50 >10-100 mg/L). Therefore, avoid direct discharge into soil, drains, sewers, waterways and other environmental bodies. Disposal should comply with local regulations.

Question 8

How to use Stearic acid polyoxyethylene ether SG-9? What is the recommended addition amount?

Accepted Answer

The use of Stearic acid polyoxyethylene ether SG-9 depends on the specific application field. The conventional addition amount ranges from 1% to 15%, and the optimal dosage should be determined through experimental optimization. Detailed Description Stearic acid polyoxyethylene ether SG-9 is a nonionic surctant, appearing as a white to light yellow flaky solid, with an HLB value of about 11.6. It is easily soluble in water, ethanol, and other solvents. When using, it is usually heated to 40~50°C to melt, then slowly added to the water phase or oil phase under stirring conditions to ensure full dispersion and homogenization. For systems requiring emulsion preparation, it is recommended to use the oil-in-water method or water-in-oil method, selecting the appropriate emulsification temperature (generally controlled at 60~75°C) according to the specific formulation process, to achieve the best emulsification effect and system stability. Since SG-9 has good compatibility with anionic, cationic, and other nonionic surctants, it is often compounded with other emulsifiers or auxiliaries in actual formulations to achieve synergistic effects. During compounding, attention should be paid to the compatibility of each component, and the thermal stability and dilution stability of the system should be fully verified in laboratory small-scale tests. After opening the solid product, it should be sealed and stored promptly to avoid prolonged exposure to humid environments which may cause caking. The Guoli Chemical Database does not provide standard addition amount parameters for various application fields. The following recommended amounts are industry general experience reference values. In specific formulations, adjustments should be made based on raw material characteristics, processing technology, and target performance, and the final amount should be determined through small-scale testing. Application Recommendations Recommended Addition Amounts by Field (Empirical Reference Values) Application Field Function Role Recommended Addition (wt%) Usage Key Points Textile Oils Emulsifier, Antistatic Agent 3%~10% Mix with base oil and other additives, heat to 50°C, stir evenly, then cool before use Cosmetic Creams and Lotions O/W Emulsifier 1%~5% Heat with the oil phase to 70±5°C, heat the water phase to the same temperature, then homogenize and emulsify cial/Hair Cleansing Products Solubilizer, Supertting Agent 0.5%~3% Add during the cooling stage (40~45°C) of the formulation, stir evenly Metalworking Fluids Emulsifier, Lubricant 5%~15% (concentrate) Mix with base oil and heat to 50~60°C, then add to water phase and other additives under stirring Pesticide Formulations Emulsifier, Dispersant 3%~8% (emulsifiable concentrate/emulsion) Mix with the active ingredient and solvent to dissolve, then auto-emulsify and disperse upon dilution Plastic Antistatic Internal Antistatic Agent 0.5%~2% Mix with resin pellets and directly process by extrusion or injection molding Coating Pigment Pastes Pigment Wetting and Dispersing Agent 0.5%~3% (based on pigment weight) Add during the grinding stage to aid pigment wetting and stable dispersion Note: The above addition amounts are industry empirical reference values, not direct parameters from the Guoli Chemical Database. Actual usage amounts must be determined through formulation experiments. Technical Parameters Parameter Item Value HLB Value About 11.6 Melting Point 28~35°C Cloud Point About 85~95°C Active Matter Content ≥99% pH of 1% Aqueous Solution 5.0~7.0 Solubility Easily soluble in water, ethanol, acetone, and other organic solvents Surce Tension About 31 mN/m Critical Micelle Concentration (CMC) About 0.07 g/L Precautions Heating for Use: This product is a solid waxy substance; it needs to be melted by heating before use. The recommended operating temperature is 40~50°C. Prolonged high-temperature heating (above 100°C) should be avoided to prevent color deepening or performance degradation. Safety Protection: The product is moderately irritating to eyes and slightly irritating to skin. Protective goggles, gloves, and protective clothing should be worn during operation, and it should be handled in a well-ventilated environment. Storage Requirements: Store in a cool, dry place at a temperature not exceeding 35°C. Keep the container tightly sealed, and avoid moisture and direct sunlight. Compounding Compatibility: Incompatible with strong oxidizing agents and strong acids. Avoid contact with such substances during storage and formulation. Small-Scale Verification: It is recommended to conduct laboratory small-scale tests and scale-up trials before formal production to evaluate formulation stability, compatibility, and target performance, and to determine the optimal addition amount.

Question 9

In which industries and processes is Stearic Acid Polyoxyethylene Ether SG-9 primarily applied?

Accepted Answer

Stearic Acid Polyoxyethylene Ether SG-9

Stearic Acid Polyoxyethylene Ether SG-9 is a nonionic surfactant used as a textile softener to improve fabric hand feel and as a synthetic fiber oil agent component.

CAS No. 9004-99-3

Packaging 50kg plastic drum, 200kg plastic drum, IBC tote

Updated 2026-06-11

Reference Price： 10950.02 ¥/ton

Updated: 2026-06-11

SDS Report Product Manual

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Product Overview

Stearic Acid Polyoxyethylene Ether SG-9, also known as Polyethylene Glycol Monostearate or PEG-9 Stearate (CAS 9004-99-3), is a nonionic surfactant with an HLB value of approximately 11-12. It exhibits excellent emulsifying, dispersing and antistatic properties, widely used in textile oil agents, cosmetic creams, metalworking fluids and pesticide emulsification. Guoli Chemical provides factory-direct supply with free samples and technical support.

Performance Features

Balanced emulsifying power: With an HLB around 11.6, it provides effective O/W emulsification for creams, lotions and industrial emulsions.
Good dispersing and antistatic: Reduces static charge buildup on synthetic fibers and improves the dispersion of solid particles in liquid formulations.
Fabric softening: Imparts a soft, smooth hand feel to textiles when used in finishing treatments.
Broad compatibility: Works well with anionic, cationic and other nonionic surfactants.

Application Guidelines

Textile Softener: Use at 0.2%-1% in padding or exhaustion processes at 30-50°C.
Cosmetic Emulsifier: Add 1%-5% to the oil phase, heat, and combine with the water phase for stable cream formation.
Synthetic Fiber Oil: Use at 0.1%-0.5% in spinning oil formulations.

Packaging and Storage

50kg plastic drum, 200kg plastic drum, IBC tote. Store in a cool, dry place. Shelf life: 24 months.