Question 1

Are G-18 glycerol polyoxyethylene ether and polyoxyethyl glycerol ether harmful to the human body? Do they have an impact on the environment?

Accepted Answer

G-18 glycerol polyoxyethylene ether has low toxicity under normal use conditions, but direct contact can cause skin and eye irritation; its environmental impact is mainly physical pollution, and it should be prevented from entering water bodies. Effects on Human Health According to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), the main health hazard of this product is concentrated on direct contact irritation. It is not classified as a highly toxic or carcinogenic substance, and its long history of use in cosmetics and personal care products indicates that it is safe as a mild nonionic surctant in formulations. However, strict protection is required when directly contacting the pure substance or high-concentration solutions. Specific classification: Skin corrosion/irritation (Category 2, H315 Causes skin irritation); Serious eye damage/eye irritation (Category 2A, H319 Causes serious eye irritation). This means that if improperly handled, the stock solution splashed on the skin may cause erythema or discomfort, and splashed into the eyes may cause obvious stinging and conjunctival damage. Inhalation risk is relatively low because the product is a viscous liquid at room temperature with low vapor pressure; however, when heated to decompose or forming aerosols/mists, inhalation may cause respiratory discomfort. Ingestion can cause gastrointestinal irritation, do not induce vomiting. Impact on the Environment G-18 glycerol polyoxyethylene ether (polyoxyethyl glycerol ether) is mainly eliminated in the environment through biodegradation. Its molecular main chain is a carbon-oxygen structure and does not have obvious bioaccumulation. However, as a surctant, if a large amount is discharged into water bodies in a short time, it will reduce the surce tension of water, affect the respiration and osmotic regulation of aquatic organisms, and exert pressure on the ecological balance of aquatic microbial communities. The product database clearly requires: In case of leakage, use inert absorbent materials (such as sand and soil) to absorb and collect, dispose of as hazardous waste, and prohibit discharge into drainage systems, water bodies, or soil. This indicates that although the environmental toxicity of a single product is not high, it is still necessary to control its pathway into the environment to avoid cumulative effects and aquatic ecological risks caused by excessive local concentrations. Subject to management regulations, enterprises using this product need to pretreat wastewater containing this component to ensure that the surctant concentration limits required by local environmental protection departments are met before discharge. Safe Use and Disposal Guidelines Operational Protection Must wear chemical protective gloves, goggles or ce shield, and protective clothing. Keep the workplace ventilated, avoid eating and smoking, and thoroughly wash exposed skin after work. First Aid Measures Eye contact: Immediately rinse with plenty of water for at least 15 minutes, lift eyelids, and seek medical attention as soon as possible. Skin contact: Remove contaminated clothing and wash with plenty of soap and water. If irritation persists, seek medical attention. Ingestion: Do not induce vomiting, rinse mouth, drink plenty of water, and seek medical attention immediately. Environmental Disposal Absorb spilled material with sand, soil, or vermiculite, collect in a sealed container, and dispose of as hazardous waste. Do not flush into sewers or surce waters. Empty containers should not be disposed of casually without thorough cleaning. It is recommended to hand them over to qualified waste treatment enterprises for incineration or safe landfill.

Question 2

What should I do if problems occur during the use of G-18 Glycerol Polyoxyethylene Ether, Polyoxyethyl Glycerol Ether? How to obtain technical support?

Accepted Answer

When encountering problems with G-18 Glycerol Polyoxyethylene Ether, immediate corresponding emergency or adjustment measures should be taken according to the type of problem, and one-on-one support from professional technical personnel can be obtained through the official channels of Guoli Chemical. Detailed Explanation G-18 Glycerol Polyoxyethylene Ether (INCI name: Glycereth-18, CAS number: 31694-55-0) is a non-ionic surctant produced by Guoli Chemical. It appears as a colorless to light yellow transparent liquid with high hydrophilicity (HLB value of about 18), excellent emulsifying and solubilizing capabilities, and chemical stability. During actual use, problems can usually be divided into safety emergency types (such as skin\/eye contact, leakage) and process application types (such as formulation stratification, poor dispersion, abnormal foam, etc.). Different types of problems require different treatment paths. The following is a classified explanation of the response plans. For safety emergency issues, strictly follow the product SDS (Safety Data Sheet): In case of eye contact, immediately rinse with plenty of water for at least 15 minutes and seek medical attention as soon as possible; in case of skin contact, remove contaminated clothing and wash thoroughly with plenty of soap and water; if inhaled and feeling unwell, move to fresh air; in case of leakage, adsorb with inert absorbent materials such as sand or vermiculite, collect in a sealed container, and dispose as hazardous waste. Do not discharge the product into water bodies or sewers. For process application issues, common manifestations and investigation directions include: poor emulsification\/solubilization effect (check HLB value matching and dosage rationality, whether the oil phase is suitable), system turbidity or stratification (check if pH is within the stable range of 3~12, whether there is interference from strong oxidants or strong acids\/bases), excessive or insufficient foam (this product has rich foam with moderate stability, can be adjusted with defoamers or other surctants as needed), reduced dispersion efficiency (confirm whether the addition order and stirring conditions are appropriate). Common Problem Troubleshooting Guide Problem ManifestationPossible CauseSuggested Treatment Formulation stratification\/demulsificationHLB value mismatch, insufficient dosage, pH outside 3~12 rangeCheck the required HLB value of the oil phase, optimize the dosage (usually 0.5%~5%), adjust the system pH value Abnormal darkening of product colorStorage temperature too high (above 30°C) or prolonged exposure to strong acid\/base environmentConfirm storage temperature 5~30°C, seal and protect from light, check batch quality Poor water solubilityIncreased viscosity at low temperature leading to slow dispersionThis product is easily soluble in water; it is recommended to dissolve with stirring at 15~40°C to avoid freezing Skin\/eye irritationDirect contact without wearing protective equipmentImmediately rinse according to SDS first aid measures; future operations must wear protective gloves and goggles Poor dispersion in coatings\/inksImproper addition order or insufficient shear forceAdd during the grinding stage to ensure adequate shear dispersion Application Suggestions G-18 Glycerol Polyoxyethylene Ether is suitable for various fields including cosmetics, textiles, metalworking fluids, coatings and inks, industrial cleaning, and polyurethane foam. Key usage suggestions are as follows: Cosmetics and Personal Care Products: As an O\/W emulsifier and solubilizer, recommended dosage 0.5%~5%, added to the water phase during the emulsification stage; also has certain moisturizing properties, suitable for formulations such as cial cleansers, makeup removers, and creams. Textile Industry: Used as an antistatic agent and softener, recommended dosage 1%~3% (based on bric weight), applied by padding or dipping process. Metalworking Fluids: Has both lubricating and anti-rust functions, recommended to add 5%~15% in the concentrate, then dilute with water before use. Coatings and Inks: As a wetting and dispersing agent, recommended to add during the grinding stage at 2%~10% of the pigment weight. Industrial Cleaners: Utilizes its wetting and penetrating ability, recommended to combine with anionic or amphoteric surctants at a dosage of 3%~8%. Polyurethane Foam: Used as a foam stabilizer, add 1~3 parts (per 100 parts of polyol) in the foaming formulation to help control cell structure. Precautions Wear protective gloves and goggles during operation to avoid direct skin and eye contact. This product is classified under GHS as Skin irritation (H315) and Serious eye irritation (H319). Store in a cool, dry, well-ventilated place, recommended temperature 5~30°C, keep container tightly closed, away from strong oxidants, strong acids, and strong bases. The product is hygroscopic; seal tightly after opening to avoid moisture absorption affecting quality. Good chemical stability within pH 3~12; exceeding this range may cause product degradation. How to Obtain Technical Support from Guoli Chemical For further technical support and problem diagnosis, you can contact the technical team of Hai'an County Guoli Chemical Co., Ltd. through the following methods: Technical Consultation Service: Call Guoli Chemical's official customer service hotline, transfer to the technical application department, provide the product batch number and usage scenario description, and the technical personnel will analyze the problem and propose solutions. Sample Submission for Testing: For batches with potential quality doubts, retain samples can be sent to Guoli Chemical's quality inspection center for re-examination of physical and chemical indicators (hydroxyl value 180~200 mgKOH\/g, acid value ≤0.5 mgKOH\/g, moisture ≤0.5%, etc.). On-site Technical Support: For key customers or large-scale application issues, Guoli Chemical can arrange technical engineers to conduct on-site process diagnosis and formulation optimization guidance. Request SDS and Technical Data: Apply for the latest version of the Safety Data Sheet (SDS) and product application manual from the sales or customer service department to obtain detailed safety operation guidelines and formulation suggestions. It is recommended to prepare the following information in advance when contacting technical support for quick problem identification: product batch number, usage dosage, formulation system overview (pH value, temperature, other components), specific description of the problem phenomenon, and photos. This will help the Guoli Chemical technical team provide you with accurate solutions more efficiently.

Question 3

How to purchase G-18 glycerol polyoxyethylene ether, polyoxyethyl glycerol ether? What is the minimum order quantity?

Accepted Answer

The minimum order quantity for G-18 glycerol polyoxyethylene ether is 50kg (one packaging unit). You can directly contact the sales team of Haian Guoli Chemical Co., Ltd. for procurement inquiries. Detailed Description G-18 glycerol polyoxyethylene ether (polyoxyethyl glycerol ether, CAS No.: 31694-55-0) is one of the core products of Guoli Chemical. The product price is not directly published in the database. The actual transaction price needs to be determined based on ctors such as order quantity, packaging specifications, and market conditions. It is recommended that you directly contact the Guoli Chemical sales team for the latest quotation and product inventory information. The procurement process is usually: submit procurement requirements → sales team confirms specifications and quantity → provide formal quotation → both parties confirm order → arrange shipment. As a professional surctant manucturer, Guoli Chemical supports a variety of cooperation modes, including sample requests, small batch trial purchases, and long-term contract orders. The conventional packaging specifications of this product include 50kg plastic drum, 200kg plastic drum, 1000kg IBC tote, which can meet different procurement needs from laboratory small-scale testing to industrial mass production. If special packaging or larger specifications are required, a customized solution can be negotiated with the sales team. Packaging Specifications and Ordering Information Packaging SpecificationApplicable ScenarioRemarks 50kg plastic drumSmall batch trial, laboratory formulation developmentMinimum order unit 200kg plastic drumPilot production, conventional industrial procurementBetter cost performance than small packaging 1000kg IBC toteLarge-scale industrial continuous productionSuitable for long-term stable cooperation customers Application Suggestions Before placing an order, it is recommended to clarify your specific application scenario, so that the technical team of Guoli Chemical can provide targeted formulation suggestions. G-18 glycerol polyoxyethylene ether is widely used in six major fields: Cosmetics and Personal Care — As an O/W emulsifier and solubilizer, recommended dosage 1%~5% Textile Industry — Used as an antistatic agent and softening finishing agent Metalworking Fluids — Has both lubrication and rust prevention functions, suitable for cutting fluid formulations Coatings and Inks — High-efficiency wetting and dispersing agent, improves pigment dispersion stability Industrial Cleaners — Enhances detergency and penetration ability Polyurethane Foam — Foam stabilizer component Precautions This product is classified by GHS as skin irritation (H315) and serious eye irritation (H319). Protective gloves and goggles must be worn during operation. Storage temperature is recommended to be within 5~30°C, avoid freezing and high temperature, keep container tightly closed. The above price information is for reference only. Please contact the Guoli Chemical sales team for the latest quotation. Free samples can be requested before ordering for formulation compatibility testing to ensure the product meets your application requirements.

Question 4

Does G-18 glycerol polyoxyethylene ether, polyoxyethyl glycerol ether meet environmental protection requirements? Can a test report be provided?

Accepted Answer

Currently, there is no environmental certification information or test report for this product in the database. It is recommended to contact Guoli Chemical directly for official documents. Detailed Explanation G-18 glycerol polyoxyethylene ether (polyoxyethyl glycerol ether, CAS: 31694-55-0), as a nonionic surctant, needs to be evaluated for environmental compliance from multiple dimensions. From a product structure perspective, this product features a glycerol backbone linked with polyoxyethylene chains, belonging to mild surctants with certain biodegradation potential. However, it should be noted that our database currently does not contain specific environmental certifications (such as REACH, RoHS, OECD biodegradation tests, etc.) for this product, nor does it store corresponding third-party test reports. Regarding important environmental information, the product safety data explicitly requires: Waste disposal must be carried out by incineration or safe landfill in accordance with local/national regulations, and discharge into the environment is prohibited. In case of leakage, prevent leakage from entering drainage systems, water bodies, or soil. This indicates that the product requires controlled disposal after use and cannot be directly discharged, making it a chemical requiring standardized handling. Test reports are typically batch-specific documents, including physicochemical indicators (such as hydroxyl value, cloud point, pH value, etc.), heavy metal content, microbial limits, etc., and must be issued by the quality inspection department based on specific production batches. If you require environmental compliance certifications or test reports, it is recommended to contact Guoli Chemical's sales or technical support team directly to obtain the latest versions of SDS (Safety Data Sheet), COA (Certificate of Analysis), and relevant environmental test reports. Environmental Safety Related Parameters ItemDescription Product TypeNonionic surctant (glycerol polyether class) GHS ClassificationSkin irritation (H315), Serious eye irritation (H319) BiodegradabilityNo clear data in the database Environmental CertificationNo REACH/RoHS or other certification records in the database Test ReportRequires applying for batch COA and third-party test report from the manucturer Wastewater Treatment RequirementsProhibited from direct discharge into water bodies; must undergo controlled disposal in accordance with regulations Packaging Waste DisposalHandle in accordance with hazardous waste specifications; do not discard indiscriminately Recommended Actions If you need to confirm the environmental compliance of this product, it is recommended to follow these steps: Request SDS and COA: Obtain the latest Safety Data Sheet (SDS) and Certificate of Analysis (COA) from Guoli Chemical. These documents typically contain basic ecotoxicological data and batch test results. Apply for Third-Party Test Reports: If involving export or specific industry access requirements (e.g., cosmetic ingredient registration), request the manucturer to provide test reports issued by third-party testing organizations. Clarify Specific Environmental Standards: Different industries and regions have varying definitions of "environmental requirements" (e.g., EU REACH regulations, China's "Measures for Environmental Management of New Chemical Substances"). Please specify the exact standards you are following so the manucturer can provide targeted documents. Notes Although this product is a glycerol-based mild surctant, it must still be managed in accordance with chemical regulations. Wastewater after use must be treated to meet discharge standards. Environmental test reports are usually time-sensitive. Please confirm the validity period and scope of application of the required reports. If you have requirements for customized products or environmentally friendly formulation optimization, you can consult Guoli Chemical's technical team for green chemistry solutions.

Question 5

What advantages does G-18 glycerol polyoxyethylene ether (polyoxyethyl glycerol ether) have compared to other similar products?

Accepted Answer

According to technical data from Guoli Chemical, the core advantages of G-18 glycerol polyoxyethylene ether (polyoxyethyl glycerol ether) over similar products (e.g., G-25) lie in its extremely high hydrophilicity, superior solubilization ability, and better chemical stability in specific systems. Although they belong to the same series of glycerol polyoxyethylene ether nonionic surctants, due to differences in molecular structure (degree of polymerization of ethylene oxide n), their performance focuses and application scenarios differ significantly. Below is a detailed comparative analysis based on the Guoli Chemical database. ### 1. Core Performance Advantage Comparison | Comparison Item | G-18 (n≈18) Advantage | G-25 (n≈25) Characteristic | Advantage Interpretation | | :--- | :--- | :--- | :--- | | HLB Value | 18 | 13.5 | G-18 has a higher HLB value, stronger hydrophilicity, dissolves more rapidly in water, and is more suitable as a solubilizer and emulsifier for O/W systems. | | Solubilization Ability | Stronger | Relatively strong | For fragrances, oils, or active ingredients that are difficult to dissolve in water, G-18 can form clearer and more stable microemulsion systems, which is its outstanding advantage. | | Foam Characteristics | Rich foam | Low foam | G-18 has an advantage in products requiring rich foam, such as cial cleansers and body washes, enhancing the skin feel during use. | | Surce Tension | 35~40 mN/m | About 32 mN/m | G-25 is more efficient in reducing surce tension, but in personal care products requiring rich foam, such as cial cleansers and body washes, G-18 offers better overall wetting and foam performance. | | Cloud Point (1% aqueous solution) | >100°C | >100°C | Both have excellent high-temperature stability and electrolyte resistance, remaining effective in high-temperature or acidic/alkaline cleaning formulations. | | Chemical Stability | Stable within pH 3~12 | Stable at room temperature | The database specifically emphasizes G-18's stability over a wide pH range, which is a major advantage for formulating strong acidic or alkaline industrial cleaners. | | Moisturizing & Mildness | Also provides moisturizing properties | Mild, low irritation | Based on its glycerol ether structure, G-18 offers additional moisturizing effects in cleansing products, reducing post-wash tightness and improving skin feel. | | Molecular Weight & Viscosity | 800~900, moderate viscosity | ~1200, higher viscosity | G-18 has a lower molecular weight, making it easier to handle in formulations with better fluidity. | ### 2. Summary of Application Advantages According to Guoli Chemical's application data, G-18's advantages are particularly prominent in the following areas: - Personal Care Products: With its high HLB value, rich foam, and specific moisturizing properties, it is an ideal choice for cial cleansers, body washes, and fragrance solubilizers, achieving a "cleansing and care in one" effect. - Industrial Cleaners: In scenarios requiring resistance to strong acids/bases and good foam to carry dirt, such as hard surce cleaning, textile pretreatment, its chemical stability and detergency advantages are clear. - Polyurethane Foam: As a foam stabilizer, G-18 effectively regulates cell structure, a unique application not mentioned in the G-25 product database. ### 3. Selection Recommendations Choosing G-18 over G-25 depends mainly on your formulation goals: - Choose G-18 if you need: - To solubilize poorly soluble ingredients and prepare clear aqueous systems. - To formulate high-pH industrial cleaners. - To develop foam-rich cial cleansers or body washes with moisturizing effects. - For regulating foam structure in the polyurethane foaming industry. - Choose G-25 if you need: - Low-foaming or even non-foaming industrial cleaning or metalworking systems. - Lower surce tension for rapid wetting and spreading. - As an emulsifying stabilizer in emulsion polymerization to control latex particle size. Precautions: According to GHS classification, G-18 causes skin irritation (H315) and serious eye irritation (H319). Protective gloves and goggles must be worn during handling; avoid direct contact. Although G-18 formulations are mild, its direct role in the final product is as a functional ingredient, and safe handling practices should still be followed during formulation.

Question 6

How should G-18 Glycerol Polyoxyethylene Ether (Polyoxyethyl Glycerol Ether) be stored? What is the shelf life?

Accepted Answer

G-18 Glycerol Polyoxyethylene Ether should be stored sealed in a cool, dry, and well-ventilated environment, with a recommended temperature of 5~30°C; the shelf life is not specified in the database. Generally, non-ionic surctants have a shelf life of 12 to 24 months under standard storage conditions. Detailed Description G-18 Glycerol Polyoxyethylene Ether (Polyoxyethyl Glycerol Ether) is a non-ionic surctant with relatively stable chemical properties, maintaining performance in acidic, alkaline, and hard water environments. However, to ensure product quality is not affected, attention should be paid to controlling environmental conditions during storage, avoiding high temperatures, freezing, and improper contact. Regarding the shelf life, the official product database of Hai'an Guoli Chemical Co., Ltd. has not yet provided specific shelf life data for this product. According to industry practice for non-ionic surctants, under strict adherence to storage conditions, the generally recommended shelf life is 12 to 24 months from the date of manucture. It is recommended to refer to the shelf life stated on the product packaging label, or contact the sales department of Guoli Chemical for batch-level shelf life confirmation. For products beyond the recommended shelf life, if the appearance (colorless to light yellow transparent liquid) shows no abnormalities and no stratification or turbidity, samples can be taken to test key indicators (such as pH value, hydroxyl value, cloud point, etc.) to confirm whether they can still be used. Storage Conditions at a Glance Storage ElementSpecific Requirement Ambient TemperatureRecommended range 5~30°C, avoid freezing and high temperature exposure Ambient HumidityKeep dry, prevent moisture absorption Ventilation ConditionsStore in a well-ventilated dedicated warehouse, avoid vapor accumulation Container StatusKeep container tightly sealed to prevent impurities and moisture ingress Avoid SourcesKeep away from heat sources, sparks, open flames Isolate StorageStore separately from incompatible materials such as strong oxidizers, acids, and bases Empty Container DisposalEmpty containers may contain hazardous residues; do not dispose of without thorough cleaning Application Recommendations When dispensing G-18, it is recommended to follow the "first-in, first-out" principle to avoid long-term accumulation. After each withdrawal, the container should be immediately sealed to reduce contact of the product with moisture in the air. If the product becomes turbid or separates due to low temperature, it can be slowly warmed to room temperature and stirred evenly before use; this usually does not affect its core properties such as emulsification and solubilization. Precautions This product is classified under GHS as: Skin irritation (H315) and serious eye irritation (H319). Wear protective gloves and safety goggles during access and handling, and wash hands thoroughly after operation. In case of accidental contact with skin or eyes, rinse immediately with plenty of water; for eye contact, continue rinsing for at least 15 minutes and seek medical attention as soon as possible. For specific safety data, refer to the Safety Data Sheet (SDS). For final confirmation of shelf life, it is recommended to directly consult the technical team of Guoli Chemical for authoritative answers.

Question 7

What safety precautions should be taken when using G-18 glycerol polyoxyethylene ether, polyoxyethyl glycerol ether?

Accepted Answer

G-18 glycerol polyoxyethylene ether is a low-irritation chemical, but strict eye and skin protection must be worn during handling. The core risks are skin irritation (H315) and serious eye irritation (H319). Detailed Description G-18 glycerol polyoxyethylene ether (polyoxyethyl glycerol ether) is a nonionic surctant. According to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), its hazard categories are skin corrosion/irritation Category 2 (H315) and serious eye damage/eye irritation Category 2A (H319). This means the product is not highly toxic or corrosive, but direct contact may cause discomfort such as skin redness and itching, and splashes into the eyes can lead to severe eye irritation symptoms. Therefore, in daily operations, it should be treated as an industrial chemical requiring regulated management, and protective measures must not be overlooked. From a chemical stability perspective, this product maintains stable performance in acidic, alkaline, and hard water environments and is not prone to decomposition producing toxic gases. However, under high-temperature or open flame conditions, polyoxyethylene ether substances pose a risk of thermal decomposition, potentially releasing irritating gases. Therefore, during storage and use, it should be kept away from heat sources, sparks, and open flames, and the operating area should be well-ventilated to avoid inhalation of vapors, mists, or dust. In case of accidental contact, first aid measures are crucial: Eye contact should be immediately flushed with plenty of water for at least 15 minutes, holding the eyelids open to ensure thorough rinsing, and seek medical attention as soon as possible; Skin contact requires removing contaminated clothing and washing with plenty of soap and water; Inhalation of discomfort should be moved to fresh air; Ingestion should not induce vomiting, but rinse the mouth and drink plenty of water, then seek medical attention. In case of leakage, use inert absorbent materials (such as sand, vermiculite) to absorb, collect in closed containers and dispose of as hazardous waste, avoiding discharge into water bodies or soil. Safety Risk Classification Hazard CategoryGHS ClassificationHazard CodeDescription Skin corrosion/irritationCategory 2H315Causes skin irritation Serious eye damage/eye irritationCategory 2AH319Causes serious eye irritation Flammability——Product is not flammable, but thermal decomposition may produce irritating gases Safe Operation and Protection Recommendations Personal Protective Equipment (PPE): Protective gloves (recommended nitrile or neoprene material), protective goggles/ce shield, and appropriate protective clothing must be worn during handling. After operation, thoroughly wash hands and any exposed skin areas. Eating, drinking, or smoking is prohibited in the workplace. Storage Conditions: It is recommended to store in a cool, dry, well-ventilated dedicated warehouse, with temperature controlled between 5°C and 30°C, avoiding freezing and high temperatures. Keep containers tightly closed and store separately from incompatible substances such as strong oxidizers, acids, and alkalis. Empty containers may retain hazardous residues and must not be disposed of arbitrarily without thorough cleaning. Special Precautions for Application Scenarios: In all application fields (cosmetic ingredients, textile auxiliaries, metalworking fluids, coating dispersants, industrial cleaning, polyurethane foam, etc.), the above general safety specifications must be followed. Especially during open mixing or heating operations, ventilation should be enhanced and protection levels upgraded to prevent aerosols or vapors from contacting eyes and respiratory tract. Precautions Operators should receive special training and strictly follow operating procedures. Refer to the Safety Data Sheet (SDS) for detailed safety data. Although this product is not flammable, for firefighting, water spray, alcohol-resistant foam, dry powder, or carbon dioxide extinguishers should be used. Firefighters should wear self-contained breathing apparatus and full protective clothing. Prevent leakage from entering drainage systems, water bodies, or soil to avoid environmental pollution. Dispose of waste in accordance with local/national regulations; do not discharge into the environment arbitrarily.

Question 8

How to use G-18 Glycerol Polyoxyethylene Ether, Polyoxyethyl Glycerol Ether? What is the recommended dosage?

Accepted Answer

The usage method of G-18 Glycerol Polyoxyethylene Ether varies by application area; generally, it is added directly or pre-dissolved before incorporation into the formulation system. The recommended dosage by weight is typically between 0.5% and 10%, with the specific amount determined by experiments based on the target formulation. Detailed Description G-18 Glycerol Polyoxyethylene Ether (Polyoxyethyl Glycerol Ether, CAS: 31694-55-0) is a non-ionic surctant with a high HLB value (approximately 18), appearing as a colorless to light yellow transparent viscous liquid, easily soluble in water. Before use, it is recommended to pre-mix it with a small amount of water or aqueous components in the formulation, stirring until completely dissolved before adding it to the main system. In cream, lotion, and other cosmetic formulations, it is usually added when the water phase is heated to 70~80°C, then mixed with the oil phase for homogenization and emulsification. In industrial cleaning agents, it can be directly added to water together with other surctants and auxiliaries and stirred until dissolved. In coatings and ink systems, it should be added during the grinding and dispersion stage to fully exert its wetting and dispersing effect. This product has good chemical stability in the pH range of 3~12, but should avoid long-term coexistence with strong acids, strong bases, and strong oxidizing agents. Due to the product's hygroscopicity, it must be sealed promptly after opening and stored in a cool, dry environment at 5~30°C. Technical Parameters Parameter ItemIndicatorParameter ItemIndicator AppearanceColorless to light yellow transparent liquidIon TypeNon-ionic HLB Value~18Active Content≥99% Density (25°C)1.05~1.10 g\/cm³pH Value (1% aqueous solution)5.0~7.0 Hydroxyl Value180~200 mgKOH\/gCloud Point>100°C Moisture Content≤0.5%Acid Value≤0.5 mgKOH\/g Surce Tension (25°C)35~40 mN\/mCritical Micelle Concentration (CMC)Approximately 0.1~1.0 g\/L (25°C) Kinematic Viscosity100~200 mm²\/sFlash Point>150°C Note: The above data are sourced from the Guoli Chemical product database. Application Recommendations — Recommended Dosage by Field The following are typical reference dosages for various application fields (based on total formulation weight). The actual amount should be optimized through orthogonal experiments according to the formulation system, process conditions, and performance targets: Application FieldFunctional RoleRecommended Dosage (wt%) Cosmetic Creams\/LotionsO\/W Emulsifier, Moisturizing Aid1.0~5.0% Makeup Removers\/cial CleansersSolubilizer, Mild Cleanser2.0~8.0% Fragrance Solubilization SystemsSolubilizerFragrance to product ratio approximately 1:2 to 1:5 Textile Softening\/Antistatic TreatmentSoftener, Antistatic AgentConcentration in bath 0.5~3.0 g\/L (after dilution) Metalworking Fluids (Cutting\/Grinding)Lubricant, Rust Inhibitor2.0~10.0% Coatings and InksPigment Wetting and Dispersing Agent0.5~3.0% (based on pigment weight) Industrial Hard Surce CleanersWetting and Penetrating Agent, Detergent Aid1.0~5.0% Polyurethane FoamFoam Stabilizer Component0.5~2.0% Note: The dosage data are based on Guoli Chemical application experience and general industry practices. The database does not contain precise dosage parameters for each field; formulation experiments should be used as the standard. Precautions Safety Risks: This product causes skin irritation (H315) and serious eye irritation (H319). Protective gloves, goggles, and protective clothing must be worn during operation, and work should be carried out in a well-ventilated area. Addition Sequence: In emulsification systems, it is recommended to add it to the water phase for complete dissolution before mixing with the oil phase; adding during the grinding stage in coatings yields better results than post-addition during the paint mixing stage. Foam Characteristics: This product produces rich foam with moderate stability. For low-foam formulations, a defoamer should be used in conjunction. High HLB Characteristic: With an HLB value of approximately 18, it is suitable for preparing O\/W emulsions and water-soluble systems. For W\/O emulsions, it should be used in combination with a low HLB emulsifier. Storage Requirements: Store sealed at 5~30°C, avoiding moisture absorption and freezing; keep away from strong oxidizing agents, strong acids, and strong alkalis.

Question 9

In which industries and processes are G-18 glycerol polyoxyethylene ether (polyoxyethyl glycerol ether) mainly used?

Accepted Answer

G-18 glycerol polyoxyethylene ether (polyoxyethyl glycerol ether) is mainly used in six major industries: cosmetics and personal care, textile industry, metalworking fluids, coatings and inks, industrial cleaning agents, and polyurethane foam, functioning as a nonionic surctant with multiple functions such as emulsification, solubilization, wetting and dispersion, antistatic, lubrication and rust prevention, and foam stabilization. Detailed Description G-18 glycerol polyoxyethylene ether (INCI name: Glycereth-18, CAS number: 31694-55-0) is a nonionic surctant with a glycerol backbone grafted with a polyoxyethylene (18EO) chain. It appears as a colorless to light yellow transparent liquid. Its molecular structure combines the moisturizing properties of the glycerol group with the high hydrophilicity of the polyoxyethylene chain, endowing the product with excellent water solubility, intercial activity, and chemical stability, maintaining stable performance in acidic, alkaline, and hard water environments. The core value of this product in multiple industries stems from its multifunctionality: as an O/W emulsifier and solubilizer, it effectively disperses oils, fragrances, and active ingredients; as a wetting and dispersing agent, it rapidly reduces intercial tension, improving the uniform dispersion of powders and pigments; as an antistatic agent and softening agent, it enhances fiber surce properties; and in metalworking systems, it also provides both lubrication and rust prevention functions. Specific Application Processes in Various Industries Cosmetics and Personal Care — G-18 acts as an O/W emulsifier, solubilizer, and moisturizing auxiliary in creams, lotions, cial cleansers, makeup removers, and fragrance solubilization systems. Its glycerol ether structure provides certain moisturizing properties, is mild and low-irritating, and is suitable for sensitive skin formulations, improving product stability and skin feel. Textile Industry — Used as an antistatic agent and softening finishing agent. In spinning, yarn-making, and finishing processes, it effectively eliminates static accumulation between fibers, imparts a soft and smooth hand feel to brics, and improves subsequent processability and garment wear comfort. Metalworking Fluids — Suitable for cutting fluids, grinding fluids, and rust-proof fluids formulations. G-18 provides excellent lubrication performance during metalworking, reducing friction and wear between tools and workpieces, while its rust-proof function protects machined surces, improving machining accuracy and surce quality. Coatings and Inks — As an efficient wetting and dispersing agent, it promotes uniform dispersion of pigments and fillers during pigment grinding and color mixing processes, preventing flocculation and sedimentation, avoiding floating color and flooding, thereby improving system storage stability, tinting strength, and film gloss. Industrial Cleaning Agents — Applied in hard surce cleaners and industrial degreaser formulations. With good wetting, penetration, and detergency, it effectively removes various oils and soils, and its excellent rinsability minimizes residues, making it suitable for industrial cleaning scenarios such as textile pretreatment. Polyurethane Foam — As a foam stabilizer component, it helps regulate cell structure during the foaming process of flexible and rigid polyurethane foams, improving foam fineness and dimensional stability, and enhancing foam uniformity and physical properties. Application Recommendations Depending on the application system, the recommended dosage of G-18 varies: in cosmetic emulsification formulations, the typical addition amount is 1% to 5%; when used as a solubilizer, it is recommended to premix with fragrance or active ingredients in proportion before adding to the system; in metalworking fluids and industrial cleaning formulations, the dosage can be adjusted within 2% to 10% according to detergency or lubrication requirements; for coatings and inks dispersion, the recommended dosage is 0.5% to 3.0% of the pigment amount. The specific dosage should be optimized through formulation experiments, and there is no universal standard value. Precautions This product is classified under GHS as skin irritant (H315) and serious eye irritant (H319). Protective gloves and goggles should be worn during operation, and direct contact with skin and eyes should be avoided. It is recommended to operate in a well-ventilated area to avoid inhaling vapors or mists. Storage temperature should be maintained at 5 to 30°C, container tightly sealed, away from heat sources and strong oxidizing agents. In case of accidental eye contact, flush immediately with plenty of water for at least 15 minutes and seek medical attention as soon as possible; for skin contact, wash with soap and plenty of water. For detailed safety information, please refer to the product's Safety Data Sheet (SDS).

Question 10

What are the physicochemical technical parameters of G-18 Glycerol Polyoxyethylene Ether, Polyoxyethyl Glycerol Ether?

Accepted Answer

G-18 Glycerol Polyoxyethylene Ether is a highly hydrophilic nonionic surctant with an HLB value of up to 18. Its molecular structure consists of a glycerol backbone grafted with approximately 18 EO chain segments. It appears as a colorless to light yellow transparent viscous liquid, easily soluble in water, with excellent comprehensive performance. Detailed Description G-18 Glycerol Polyoxyethylene Ether (CAS No.: 31694-55-0), INCI name Glycereth-18, molecular formula C3H5(OC2H4)n(OH)3-n (n≈18), molecular weight approximately 800~900. This product is manuctured by Haian Guoli Chemical Co., Ltd., classified as a nonionic surctant. The glycerol backbone in the molecule provides the basic hydrophilic structure, while the grafted 18 polyoxyethylene (EO) chain segments endow it with extremely high hydrophilicity and water solubility, making it an ideal choice for O/W emulsion systems. At room temperature, the product appears as a colorless to light yellow transparent viscous liquid, with no clear melting point, and is hygroscopic. It has good chemical stability, maintaining performance within the pH range of 3~12, but may degrade under strong acids, strong bases, and strong oxidizing agents. The cloud point is greater than 100°C, indicating excellent temperature resistance and solubility in normal pressure water systems. The product is not easily flammable, with a flash point above 150°C, but thermal decomposition may produce irritating or toxic gases. Technical Parameters Parameter ItemTechnical Index Product NamePolyoxyethylene (18) Glyceryl Ether / G-18 Glycerol Polyoxyethylene Ether CAS No.31694-55-0 INCI NameGlycereth-18 AliasesGlycereth-18, PEG-18 Glyceryl Ether, Ethoxylated Glycerin (18EO), PEG-18 Glyceryl Ether Molecular FormulaC3H5(OC2H4)n(OH)3-n, n≈18 Molecular Weight800~900 Ionic TypeNonionic AppearanceColorless to light yellow transparent viscous liquid HLB Value18 Active Content≥99% Solid Content≥99% Moisture≤0.5% pH Value (1% aqueous solution)5.0~7.0 pH Value (5% aqueous solution)5.0~7.0 Density (25°C)1.05~1.10 g/cm³ Kinematic Viscosity100~200 mm²/s Refractive Index1.455~1.465 Surce Tension35~40 mN/m Critical Micelle Concentration (CMC)Approx. 0.1~1.0 g/L (25°C) Cloud Point>100°C Hydroxyl Value180~200 mgKOH/g Acid Value≤0.5 mgKOH/g Saponification Value≤2 mgKOH/g Iodine Value≤2 gI₂/100g Free Alcohol≤0.5% Heavy Metals≤10 ppm Arsenic≤2 ppm Flash Point>150°C Water SolubilityEasily soluble in water HygroscopicityHygroscopic Alkali ResistanceResistant to alkali Chemical StabilityStable within pH 3~12, unstable under strong acids/bases/oxidizing agents Foaming CharacteristicsRich foam, moderate stability Penetration PowerPoor Application Suggestions Based on its high HLB value of 18, G-18 Glycerol Polyoxyethylene Ether is a typical O/W emulsifier, particularly suitable for formulation design in water-containing systems. In cosmetics and personal care products, it is recommended for creams, lotions, cial cleansers, makeup removers, and fragrance solubilization systems. The recommended dosage is generally 1%~5%, subject to optimization based on the specific formulation. In the textile industry, it can be used as an antistatic agent and softening finishing agent; in metalworking fluids, it provides both lubrication and rust prevention functions; in coatings and inks, it serves as an efficient wetting and dispersing agent, offering excellent dispersion stability for pigments and fillers. Since the product is easily soluble in water and hygroscopic, it should be used promptly after opening and stored sealed. When compounding, it is compatible with anionic, cationic, and other nonionic surctants, offering broad applicability. Precautions Skin and Eye Irritation: GHS classification: Skin irritation (H315) and Serious eye irritation (H319). Wear protective gloves and goggles during handling to avoid direct contact. Storage Requirements: Store in a cool, dry, well-ventilated warehouse at a recommended temperature of 5~30°C. Avoid freezing and high temperatures, and keep the container tightly sealed. Incompatible Substances: Store separately from strong oxidizing agents, strong acids, and strong bases to avoid contact leading to product degradation. First Aid Measures: In case of eye contact, immediately rinse with plenty of water for at least 15 minutes and seek medical attention. For skin contact, wash thoroughly with soap and water. If inhaled, move to fresh air. If ingested, do not induce vomiting; immediately rinse mouth and drink plenty of water, then seek medical attention. Packaging Specifications: Available in 50kg plastic drums, 200kg plastic drums, and 1000kg IBC totes. Data source: Guoli Chemical Product Database.

G-18 Glycerol Ethoxylate

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Property	Value
CAS No.	31694-55-0
Molecular Formula	C3H5(OC2H4)n(OH)3-n, n≈18
Appearance	Colorless to pale yellow viscous liquid
Ionic Type	Nonionic
Avg. Molecular Weight	800~900
Cloud Point	>100
Active Content	≥99
pH Value(1%)	5.0~7.0
pH Value(5%)	5.0~7.0
Iodine Value	≤2
Solubility	Readily soluble in water, ethanol
Surface Tension	35~40
CMC	~0.1~1.0 g/L (25℃)
Acid Value	≤0.5
Saponification Value	≤2
Hydroxyl Value	180~200
Moisture	≤0.5
Density	1.05~1.10
Kinematic Viscosity	100~200
Refractive Index	1.455~1.465
Flash Point	>150
Hygroscopicity	Hygroscopic
Chemical Stability	Stable within pH 3-12; unstable under strong acid/alkali and oxidizers
Penetration	Poor
Foam Property	Rich foam, moderate stability
Alkali Resistance	Alkali resistant
Viscosity	Viscous liquid
Melting Point	Liquid; no distinct melting point
Low Shear Viscosity	100~200
Solid Content	≥99
Free Alcohol	≤0.5
Heavy Metal	≤10
Arsenic	≤2

G-18 Glycerol Ethoxylate

Product Details

Applications

Properties

Safety

Product Overview

Performance Features

Packaging and Storage

Specialty Applications

Product Properties

Safety

GHS

Handling

Storage

First Aid

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