Question 1

Is G-25 Glycereth-25 harmful to the human body? Does it have an impact on the environment?

Accepted Answer

G-25 Glycereth-25 is a practically non-toxic substance, non-irritating to the skin, with mild and reversible eye irritation, environmentally friendly, readily biodegradable, and is a nonionic surctant with high safety. Detailed Description G-25 Glycereth-25 is a nonionic surctant produced by the polymerization of natural glycerin with ethylene oxide. From a human health perspective, this product exhibits excellent safety performance: the acute oral toxicity LD50 in rats is greater than 5000 mg/kg, classifying it as practically non-toxic; under standard experimental conditions, it is non-irritating to the skin (rabbit primary irritation index is 0), and eye irritation is only mild and reversible within 48 hours; the skin sensitization test (guinea pig maximization test) is negative, and the Ames bacterial reverse mutation test is also negative, indicating no genotoxicity. According to the GHS hazard classification criteria, this product does not belong to any physical, health, or environmental hazard category, making it a mild and safe chemical. From an environmental impact perspective, this product also performs well. As determined by the OECD 301F standard method, its 28-day biodegradation rate exceeds 60%, classifying it as readily biodegradable, and it is not expected to persist in the environment. Additionally, this product does not have bioaccumulation potential and has no known specific ecotoxicological effects, meeting the requirements of modern green chemistry. Under normal use and compliant discharge conditions, it will not cause persistent impacts on water, soil, or atmospheric environments. Technical Parameters Assessment ItemData/ConclusionTest Method/Standard Acute Oral Toxicity (Rat)LD50 > 5000 mg/kg (practically non-toxic level)Standard toxicology test Acute Dermal Toxicity (Rat)LD50 > 2000 mg/kgStandard toxicology test Skin Irritation (Rabbit)Non-irritating (primary irritation index 0)Standard skin irritation test Eye Irritation (Rabbit)Mildly irritating (reversible within 48 hours)Standard eye irritation test Skin Sensitization (Guinea Pig)Negative (no sensitization)Guinea pig maximization test Genotoxicity (Ames Test)Negative (no genotoxicity)Bacterial reverse mutation test Biodegradability28-day degradation rate > 60% (readily biodegradable)OECD 301F Bioaccumulation PotentialNo bioaccumulation potential— GHS Hazard ClassificationNot classified as any physical, health, or environmental hazardGHS classification criteria Application Recommendations Based on its excellent toxicological and environmental safety, G-25 Glycereth-25 is particularly suitable for use in personal care products and cosmetics (such as makeup removers, skin care serums, cial cleansers, shampoos, and body washes), meeting the development needs of mild formulations. It is also widely used in textile industry for spinning oils and finishing softeners, as well as in metalworking fluids and industrial cleaning agents. In addition, its good environmental degradation characteristics make it suitable for pesticide formulations and emulsion polymerization fields with strict environmental requirements. Precautions Although the product itself has very low toxicity, it is still recommended to wear impermeable gloves and chemical safety goggles during operation to avoid long-term repeated direct contact. Thermal decomposition of the product may produce irritating smoke; storage temperature should be maintained between 10°C and 40°C, away from high temperatures and heat sources. It is strictly prohibited to directly discharge untreated product into soil, water bodies, or drainage systems; waste must be disposed of by licensed professional waste treatment cilities in accordance with national and local environmental regulations. In case of eye contact, rinse immediately with plenty of flowing water for at least 15 minutes and seek ophthalmic medical attention as soon as possible. The above toxicological and ecological data are based on existing knowledge and standard experimental conditions; the applicability to specific workplaces should be assessed by users based on actual circumstances.

Question 2

What should I do if problems occur during the use of G-25 Glycereth-25? How to obtain technical support?

Accepted Answer

If you encounter problems when using G-25 Glycereth-25, you can troubleshoot common process and formulation issues through multiple approaches, and contact the technical team of Hai'an Guoli Chemical Co., Ltd. for professional support. Detailed Explanation G-25 Glycereth-25, as a nonionic surctant, has excellent stability in practical applications. However, if the formulation design, operation process, or storage conditions are improper, problems such as poor emulsification effect, unstable system, or non-transparent solubilization may still occur. When encountering abnormal usage, it is recommended to first conduct a systematic investigation from three dimensions: formulation compatibility, operation process parameters, and raw material quality. If self-investigation still cannot solve the problem, Guoli Chemical has a professional technical service team that can provide customers with formulation diagnosis, process optimization suggestions, and product selection guidance. You can submit problem descriptions, batch numbers, formulation overviews, and abnormal phenomena through official business channels, and the technical staff will provide targeted solutions. For complex problems, sample testing or on-site technical service can also be coordinated. Common Problem Troubleshooting Guide Problem PhenomenonPossible CausesTroubleshooting Suggestions Emulsion system stratification or demulsification Improper HLB value matching; insufficient emulsifier dosage; imbalance of oil and water phase ratio; improper temperature control G-25 has high hydrophilicity; when used alone, confirm whether the HLB value required by the oil phase matches; consider compounding with low HLB emulsifiers; check homogenization speed and time Turbid or non-transparent system after solubilization The amount of solubilizate exceeds the solubilization limit of G-25; system pH deviates from the stable range; interference from ionic components Gradually reduce the proportion of solubilizate to test the transparent critical point; G-25 is stable over a wide pH range, but attention should be paid to compatibility with other raw materials; nonionic surctants may have a decreased cloud point in high-concentration electrolyte systems Abnormal product morphology (stratification, precipitation, discoloration) Storage temperature exceeds the range of 10°C to 40°C; poor container sealing causing moisture absorption; contact with incompatible substances Confirm whether storage conditions meet SDS requirements; if frozen, restore to room temperature and stir evenly before re-evaluation; discontinue use if severe discoloration or odor occurs Abnormally high or low foam Synergistic or antifoaming effects of other surctants in the formulation; high water hardness G-25 itself is a low-foaming nonionic surctant; if foam increases abnormally, check whether it is compounded with other high-foaming surctants; it has excellent hard water resistance, and conventional water quality has little effect Poor skin feel or irritation after use Excessive dosage; synergistic effect with other irritating raw materials; batch variation Adjust according to recommended dosage; G-25 has been toxicologically verified to have no skin irritation and mild eye irritation, with high safety; if abnormalities occur, check other components in the formulation Application Suggestions Personal care product formulation: When used as a solubilizer, it is recommended to pre-mix G-25 with the substance to be solubilized (fragrance, essential oil, etc.) in proportion, then slowly add to the water phase while stirring to cilitate the formation of a transparent and stable microemulsion system. When used as an O/W emulsifier, it is recommended to compound with low HLB emulsifiers; proper HLB matching can significantly improve emulsion stability. Industrial applications: When used in metalworking fluids, pay attention to the circulation cycle of the working fluid and regularly test pH and concentration. For textile oils, it is recommended to use in combination with antistatic agents. In industrial cleaning, the low-foaming characteristics of G-25 are particularly suitable for high-pressure spray systems, effectively avoiding foam overflow issues. Precautions When changing product batches, it is recommended to conduct small-scale verification first to confirm batch-to-batch consistency. When preparing high-concentration stock solutions, slowly add to the water phase under stirring to avoid local gelation. If compounding with anionic surctants, note that charge effects may affect performance; conduct compatibility pre-tests as needed. If any abnormality occurs, retain the problem sample and corresponding batch number for technical staff to trace and analyze. How to Obtain Technical Support from Guoli Chemical To obtain official technical support from Hai'an Guoli Chemical Co., Ltd., it is recommended to contact us through the following channels: 1. Business contact channel: Contact the sales manager or regional business representative assigned to you, directly report the problems encountered during use, and submit the product batch number, usage process parameters, and description of abnormal conditions. 2. Sample testing service: If in-depth analysis is needed, send the problem sample and retained sealed sample to the Guoli Chemical Technology Center for physical and chemical index retesting and application performance evaluation. 3. Technical data reference: The Certificate of Analysis (COA) and Safety Data Sheet (SDS) contain detailed physical and chemical index ranges and safety data, which can serve as a reference for preliminary troubleshooting. The specific physical and chemical index ranges of the product are subject to the COA. The Guoli Chemical technical team has extensive experience in nonionic surctant applications and can provide customers with comprehensive technical support from formulation design, process optimization to problem diagnosis, helping to ensure stable product application.

Question 3

How to purchase G-25 Glycereth-25? What is the minimum order quantity?

Accepted Answer

G-25 Glycereth-25 can be purchased directly by contacting the sales team of Haian Guoli Chemical Co., Ltd. The minimum packaging specification is a 50kg plastic drum. For the actual minimum order quantity and latest price, please consult the sales team. Detailed Description G-25 Glycereth-25 (CAS No.: 31694-55-0) is a regular mass-produced product of Guoli Chemical. It is a high-performance nonionic surctant widely used in cosmetics, textiles, metalworking fluids, and industrial cleaning. This product is a regular stock item with stable supply. The procurement process is as follows: You can directly call Guoli Chemical's official sales hotline or send an email for price inquiries. The sales team will provide the latest quotation, minimum order quantity policy, and delivery time based on your needs. Due to market fluctuations in upstream raw materials (ethylene oxide, glycerin), the price in the database is a reference price. The final transaction price is subject to the mutually confirmed quotation. If you are a first-time trial user, it is recommended to first request samples for formulation verification to confirm product suitability before bulk procurement. This can effectively reduce trial and error costs. Packaging Specifications and Reference MOQ Packaging Type Specification Applicable Scenario Plastic Drum 50kg Small batch trial or pilot production Plastic Drum 200kg Regular batch production procurement IBC Tote 1000kg Large-scale production, reducing cost per kilogram According to chemical industry practices, the minimum order quantity is usually one complete packaging unit, i.e., 50kg minimum. Whether the specific minimum order quantity can be adjusted based on total order amount, customer type, and other ctors is subject to final confirmation from the sales team. Procurement Suggestions To obtain a more accurate quotation and service, it is recommended to prepare the following information when making an inquiry: Estimated Usage: Annual usage or initial purchase quantity. Larger quantities usually offer better pricing advantages. Target Application: E.g., cosmetic solubilizer, metalworking fluid emulsifier, etc. Sales engineers can provide formulation application suggestions accordingly. Delivery Requirements: Delivery location, time requirements, and whether partial shipment is needed. Required Documentation: Whether product analysis certificate (COA) and safety data sheet (SDS) are required with the shipment. Notes This product is hygroscopic. After receipt, ensure the packaging is well sealed and store in a cool, dry place at 10°C to 40°C. It is recommended to request small samples first for formulation compatibility and stability testing before bulk procurement. The above packaging specifications are from Guoli Chemical's database. The actual available packaging is subject to real-time confirmation from the sales team.

Question 4

Does G-25 Glycereth-25 meet environmental requirements? Can a test report be provided?

Accepted Answer

G-25 Glycereth-25 meets mainstream environmental requirements and has good biodegradability and environmental safety. Detailed Explanation G-25 Glycereth-25 (Glycereth-25) performs well in terms of environmental compliance. This product is produced through the polymerization of natural glycerol with ethylene oxide, belonging to the category of nonionic surctants. Its design concept and actual performance are in line with the development direction of modern green chemistry. According to product ecotoxicity data, the product has been tested using the OECD 301F standard method, with a 28-day biodegradation rate exceeding 60%, classifying it as "readily biodegradable," meaning it does not persist in the environment. Additionally, the product is assessed as not bioaccumulative and has no known specific ecotoxic effects. Under the GHS (Globally Harmonized System of Classification and Labelling of Chemicals) hazard classification system, this product does not ll under physical, health, or environmental hazard categories, implying that it is not legally classified as a substance harmful to the environment. Furthermore, as a nonionic surctant, this product can partially replace traditional surctants that have a higher environmental burden in practical applications, helping downstream customers formulate more sustainable end products. About Test Reports Guoli Chemical has a comprehensive quality management system and can provide customers with the following official test and compliance documents: Certificate of Analysis (COA): Includes specific measured values of physicochemical parameters for each batch (such as appearance, hydroxyl value, pH value, moisture content, etc.), which is the core testing document for product quality. Safety Data Sheet (SDS/MSDS): Covers toxicological data, ecotoxicological data, biodegradability assessment, GHS classification conclusions, and safe handling instructions. Biodegradability Test Report: If customers have special requirements, further communication can provide detailed degradation rate test data based on the OECD 301F method. Notes The above reports are usually provided with batch shipments or issued separately based on customer needs. If you require a test report for a specific batch or need compliance verification before formal procurement, please contact Guoli Chemical's sales or technical department directly with the required document list. We will assist in providing corresponding environmental compliance documentation based on your specific application scenarios and local regulatory requirements (such as EU REACH, China's new chemical substance registration, etc.).

Question 5

What are the advantages of G-25 Glycerol Polyoxyethylene 25 Ether compared to other similar products?

Accepted Answer

According to the technical data from Guoli Chemical, G-25 Glycerol Polyoxyethylene 25 Ether has core advantages of **higher hydrophilicity and moisture retention, excellent chemical stability, and superior mildness and safety** compared to traditional oil ethoxylates (such as castor oil polyoxyethylene ether) or conventional tty alcohol polyoxyethylene ethers, making it particularly outstanding in high-end personal care products and water-based industrial formulations. Here is a detailed analysis of its specific advantages: ### 1. Raw Material Source and Molecular Structure Advantages Compared to **castor oil polyoxyethylene ether (EL series)** or hydrogenated castor oil ether in the company database, the starting material of G-25 is natural glycerol. - **Castor oil derivatives**: The molecular structure contains a long carbon chain hydrophobic group (tty acid chain), which determines its primary function of **emulsification**. - **G-25**: The molecule is centered on glycerol, with multiple polyoxyethylene chains grafted to form a multi-hydroxyl "star-shaped" structure. This allows it to rely not on long carbon chains for lipophilicity, but on encapsulating and solubilizing poorly soluble substances, while also carrying the natural moisturizing properties of the glycerol backbone. ### 2. Performance Comparison Using the typical emulsifier **EL-40 (castor oil polyoxyethylene ether)** from the Guoli Chemical database as a reference: | Performance Dimension | **G-25 Glycerol Polyoxyethylene 25 Ether** | **EL-40 / HEL-40 Castor Oil Series** | | :--- | :--- | :--- | | **Main Function** | **Efficient solubilizer, moisturizing lubricant** | Emulsifier, dispersant | | **Hydrophilic Property** | Very high hydrophilicity, clear and transparent when dissolved in water | Good hydrophilicity, aqueous solution usually shows opalescence or slight turbidity | | **Moisturizing Skin Feel** | **Smooth, non-sticky**, with definite moisturizing effect | Rich moisturizing feel, but contribution in formula is less than glycerol series | | **Chemical Stability** | **Resistant to acids, bases, electrolytes, and hard water** | Resistant to acids and bases, but ester bond may be affected under strong alkaline conditions over time | | **Safety** | **No skin irritation, no sensitization, slight eye irritation** | Mild, no skin irritation | ### 3. Detailed Exclusive Advantages of G-25 - **Transparent Solubilization and System Stability**: G-25 can efficiently solubilize oil components such as fragrances and essential oils into water, forming a **thermodynamically stable transparent system**, while castor oil-based products mostly form emulsions (thermodynamically unstable). Micellar water and serums prepared with G-25 can be completely clear. - **Excellent Low-Temperature and Hard Water Compatibility**: The hard water resistance and wide pH stability of G-25 solve the precipitation or layering issues that castor oil-based products may encounter in some industrial environments (e.g., metalworking fluids using hard water). It remains liquid or paste-like and does not freeze at temperatures below 10°C. - **Environmental and Population Inclusiveness**: According to OECD 301F test, the 28-day biodegradation rate is >60%, and it is non-genotoxic (Ames test negative). Compared to traditional products that require more risk labeling, G-25 is more suitable for "clean beauty" and products for sensitive populations. ### 4. Application Selection Suggestions - **Choose G-25 if**: You need to formulate **transparent aqueous products** (micellar water, serums), **enhance the smoothness of hair conditioners**, **formulate hard-water-resistant industrial cleaners/metalworking fluids**, or create **formulations for sensitive skin**. - **Prefer EL/HEL series if**: Your task is to **emulsify conventional oils** to form fine emulsions, creams, or to pursue specific emulsification efficiency at high cloud points. In summary, G-25 is a typical high-end multifunctional auxiliary that "upgrades formulation quality," while castor oil ether series are "classic and reliable" emulsifying workhorses. The choice should be based on the core requirements of your formulation. *Note: The above comparative data is from Guoli Chemical product database. For more detailed application formulations, please refer to the corresponding product's Certificate of Analysis (COA).*

Question 6

How should G-25 Glycereth-25 be stored? What is its shelf life?

Accepted Answer

G-25 Glycereth-25 should be stored at 10°C to 40°C in a cool, dry, and well-ventilated area, with the container kept tightly sealed; there are no specific shelf life parameters in the database, but similar nonionic surctants under standard storage conditions typically have a shelf life of 2 years (from the date of production). Detailed Description G-25 Glycereth-25, as a polyoxyethylene nonionic surctant, requires storage precautions focused on preventing moisture absorption, high-temperature degradation, and contamination. The product itself is non-flammable, non-explosive under normal handling conditions, and chemically stable. However, prolonged exposure to high temperatures or humid air may cause moisture absorption, discoloration, or performance degradation. It is recommended to follow the "First In, First Out" principle for inventory management. Upon receipt, verify that the packaging is intact, labels are clear, and record the batch number and arrival date. Opened packaging should be used as soon as possible; if not used up in one go, promptly reseal the container after each use to minimize air exposure. Use clean, dry tools to avoid introducing moisture and impurities. Key Storage Conditions Storage ctorSpecific Requirement Temperature Range10°C to 40°C, avoid freezing and prolonged high-temperature exposure Environmental RequirementCool, dry, well-ventilated Container ConditionKeep tightly sealed to prevent moisture absorption Avoid SourcesHeat sources, sparks, open flames Incompatible SubstancesAvoid storage with strong oxidizers, strong acids, and strong bases Floor ProtectionImpermeable surce, with emergency containment trenches or dikes Secondary ContainmentPlace in a corrosion-resistant, impermeable secondary containment container Regular InspectionCheck packaging for leaks, deformation, or corrosion; transfer immediately if damaged Regarding Shelf Life Currently, the Guoli Chemical product database does not provide specific shelf life parameters for G-25 Glycereth-25. Based on industry common practice, for glycereth nonionic surctants that strictly follow the above storage conditions, the typical shelf life for unopened original packaging is 2 years from the date of production. It is recommended that users refer to the production date and expiration date printed on the product packaging, or request the Certificate of Analysis (COA) for the specific batch from Guoli Chemical to confirm shelf life information. Products beyond their shelf life should not be used directly; they must be retested for key indicators (e.g., appearance, pH value, hydroxyl value, cloud point, etc.) and deemed acceptable before evaluating continued use. Precautions No Freezing: Temperatures below 10°C may cause changes in product form or separation. If frozen, thaw slowly at room temperature and stir evenly before use; do not heat directly. Moisture Prevention: The product contains polyoxyethylene chains and is hygroscopic. After opening, seal promptly to avoid moisture absorption leading to reduced active content or microbial growth. Emergency Leak Handling: For small leaks, contain and collect using inert absorbent materials (e.g., sand, vermiculite); for large leaks, dike to prevent entry into drains or waterways. Waste Disposal: Expired or waste products must be disposed of in accordance with national and local environmental regulations by licensed professional waste treatment cilities; do not discharge into soil, water bodies, or drainage systems.

Question 7

What safety precautions should be taken when using G-25 Glycereth-25?

Accepted Answer

G-25 Glycereth-25 is a low-toxicity, non-irritating nonionic surctant, but standardized handling, storage, and emergency procedures must still be followed to ensure personnel safety and product stability. Detailed Description G-25 Glycereth-25 is a nonionic surctant with high safety. Toxicological data show that it is practically non-toxic — oral LD50 in rats > 5000 mg/kg, dermal LD50 > 2000 mg/kg, non-irritating to skin (rabbit, primary irritation index 0), eye irritation is only mild and reversible within 48 hours, and skin sensitization is negative. Although the product itself has excellent safety, long-term or repeated exposure may still cause discomfort in industrial-scale operations, so standardized protective measures cannot be ignored. Under normal handling conditions, this product is not flammable or explosive. However, improper storage and handling may lead to moisture absorption and deterioration, or thermal decomposition producing irritating fumes. In addition, although it has good biodegradability (OECD 301F, >60% degradation in 28 days), it is strictly prohibited to directly discharge the product or waste liquids containing the product into soil, water bodies, or drainage systems. Disposal must be carried out by licensed professional waste treatment cilities in compliance with national and local environmental regulations. Classification of Safety Precautions 1. Personal Protective Requirements Wear impermeable gloves, chemical safety goggles, and protective clothing during operations to avoid skin and eye contact Ensure good ventilation in the workplace to prevent accumulation of aerosols No eating, drinking, or smoking at the work site; thoroughly wash hands and exposed skin after operation Operators should receive professional training and be miliar with product characteristics and emergency procedures 2. Storage Conditions Store in a cool, dry, well-ventilated dedicated warehouse, away from heat sources, sparks, and open flames Keep containers tightly closed; storage temperature should be maintained between 10°C and 40°C, avoiding freezing and prolonged high-temperature exposure Avoid mixing with incompatible substances such as strong oxidizers, strong acids, and strong bases Regularly inspect packaging containers for signs of leakage, deformation, or corrosion; if damaged, immediately transfer to intact containers 3. Emergency Response Measures Accident TypeTreatment Method Inhalation discomfortImmediately move the patient to fresh air; administer oxygen if breathing is difficult; perform artificial respiration if breathing stops and seek medical attention Skin contactRemove contaminated clothing, rinse thoroughly with plenty of running water and mild soap for at least 15 minutes; seek medical attention if irritation persists Eye contactHold eyelids apart and flush continuously with plenty of running water or saline for at least 15 minutes; seek ophthalmic treatment as soon as possible IngestionRinse mouth with water, do NOT induce vomiting; if conscious, give a small amount of water to dilute; immediately call a poison control center or seek medical attention SpillageFor small spills, contain and collect with inert absorbent materials (sand, vermiculite); for large spills, dike to prevent entry into drains, transfer with specialized equipment FireUse water fog, dry powder, carbon dioxide, or alcohol-resistant foam; firefighters must wear positive-pressure self-contained breathing apparatus and full protective clothing 4. Toxicological and Ecological Information ItemResult Acute oral toxicity (rat)LD50 > 5000 mg/kg, practically non-toxic Acute dermal toxicity (rat)LD50 > 2000 mg/kg Skin irritation (rabbit)Non-irritating, primary irritation index 0 Eye irritation (rabbit)Mildly irritating, reversible within 48 hours Skin sensitization (guinea pig maximization test)Negative Genotoxicity (Ames test)Negative, no genotoxicity Biodegradability (OECD 301F)28-day degradation > 60%, readily biodegradable Application Recommendations In applications such as personal care products, textiles, metalworking, and industrial cleaning, G-25 is typically used at low concentrations (0.5%~10% depending on formulation), where its safety risk is minimal. It is recommended to conduct small-scale validation before first bulk use to confirm compatibility with other formulation components. For water-based formulations, this product maintains good chemical stability over a wide pH range, tolerates acids, alkalis, and electrolytes, and has strong resistance to hard water interference. Notes The above safety information is compiled based on current knowledge and is for safe handling reference only; it does not constitute a product technical specification guarantee It is the user's responsibility to assess suitability under specific workplace conditions and comply with all applicable regulations For detailed safe handling guidelines and complete toxicological and ecotoxicological information, refer to the Safety Data Sheet (SDS) For specific physical and chemical property ranges, refer to the Certificate of Analysis (COA)

Question 8

How to use G-25 Glycereth-25? What is the recommended dosage?

Accepted Answer

G-25 Glycereth-25 is a water-soluble nonionic surctant with an HLB value of approximately 13.5. It belongs to O/W emulsifiers and highly effective solubilizers. The actual dosage varies depending on the application field, generally ranging from 0.5% to 10% of the total formulation. Detailed Description G-25 Glycereth-25 (Glycereth-25), produced by Guoli Chemical, is a mild nonionic surctant. According to the Guoli Chemical product database, its effective content is ≥99%, HLB value is about 13.5, cloud point is above 100°C (1% aqueous solution), and critical micelle concentration (CMC) is approximately 0.1% (w/v). It has good water solubility and chemical stability, maintaining functional integrity over a wide pH range. Since the product is a colorless to slightly yellow transparent liquid at room temperature (freezing point below -10°C) and has low foaming characteristics, the following general operation method can be used: under stirring, slowly add G-25 to the aqueous phase, utilizing its excellent water solubility for rapid dispersion; for oil-water mixed systems, it can be added to the aqueous phase preheated to 40~60°C and then mixed with the oil phase for emulsification, or pre-mixed with the oil phase followed by water addition for phase inversion. The product viscosity is approximately 150 mPa·s (25°C), making it easy to handle and pump, suitable for automated production line metering addition. Technical Parameters Parameter ItemIndicator/ValueData Source AppearanceColorless to slightly yellow transparent liquidGuoli Chemical Database HLB ValueApproximately 13.5Guoli Chemical Database Ionic TypeNonionicGuoli Chemical Database Active Content≥99%Guoli Chemical Database Cloud Point (1% Aqueous Solution)>100°CGuoli Chemical Database Critical Micelle Concentration (CMC)Approximately 0.1% (w/v)Guoli Chemical Database pH Value (1% Aqueous Solution)5.0~7.0Guoli Chemical Database Water SolubilityEasily soluble in waterGuoli Chemical Database Viscosity (25°C)Approximately 150 mPa·sGuoli Chemical Database Foaming PropertyLow foamingGuoli Chemical Database Surce Tension (0.1%, 25°C)Approximately 32 mN/mGuoli Chemical Database Freezing Point<-10°C (liquid)Guoli Chemical Database Hydroxyl ValueApproximately 130~150 mg KOH/gGuoli Chemical Database Note: Specific dosage data vary by application scenario. The following recommended dosages are based on general industry practices. For specific physicochemical indicator ranges from the Guoli Chemical product database, please refer to the Certificate of Analysis (COA). Application Recommendations Cosmetics and Personal Care Products: When used as a solubilizer, it is recommended to add 3 to 5 times the amount of the essential oil/fragrance to be solubilized (i.e., fragrance:solubilizer ≈ 1:3~1:5) to produce transparent aqueous formulations; as an O/W emulsifier, the recommended dosage is 2%~5% of the total formulation, which can be combined with low HLB emulsifiers (such as G-2, G-3 series) to optimize emulsion stability; as a moisturizing additive in rinse-off products such as shampoos and body washes, a recommended addition of 1%~3% can effectively improve post-wash skin feel. Textile Industry: When used as a spinning oil component, it is recommended to add 5%~15% of the total oil agent, combined with smoothing agents and antistatic agents; for bric softening finishing, the finishing solution concentration is recommended at 0.5%~3% (based on bric weight), applied via padding and drying. Metalworking Fluids: As an emulsifier and lubricant in water-based cutting fluids and grinding fluids, the recommended dosage is 5%~10% of the concentrate, combined with mineral oil, rust inhibitors, and other components to form emulsified oil or semi-synthetic fluids, diluted to 3%~10% working concentration before use. Its excellent hard water resistance (cloud point >100°C) ensures long-term stability of the working fluid under high hardness water conditions. Industrial Cleaners: As a low-foaming surctant, the recommended dosage is 2%~8%, suitable for high-pressure spray cleaning and hard surce cleaning formulations, with better results when combined with alkaline additives and chelating agents. Emulsion Polymerization: As an emulsifier and stabilizer in acrylic, styrene-acrylic, etc., emulsion polymerization systems, the recommended dosage is 1%~4% of the total monomer amount, effectively controlling latex particle size and providing good mechanical and freeze-thaw stability. Pesticide Formulations: As an emulsifier and spreading agent in water-based pesticide formulations (EC, EW, ME, etc.), the recommended dosage is 5%~15% of the total formulation, helping to improve the wetting and spreading performance of the spray liquid on plant leaves. Precautions Pre-treatment: The product viscosity increases at low temperatures. If it becomes turbid or pasty in winter, it can be warmed to 20~40°C to restore fluidity and transparency without affecting performance. Addition Sequence: When preparing O/W emulsions, it is recommended to add G-25 to the aqueous phase, stir to dissolve, and then mix with the oil phase for emulsification to obtain finer and more stable emulsions. Combination Use: Combining with low HLB emulsifiers (such as low mole number glycereth series) can produce synergistic effects, expanding the emulsification range and improving stability. Protective Measures: According to Guoli Chemical safety data, this product is non-irritating to skin and mildly irritating to eyes, but it is still recommended to wear protective gloves and goggles during operation and wash hands after handling. Storage Conditions: Storage temperature should be maintained between 10°C and 40°C, sealed and moisture-proof (the product is hygroscopic), avoid mixing with strong acids, strong bases, and strong oxidizers. Optimal Dosage Confirmation: The above dosages are general industry reference ranges. It is recommended to verify the optimal dosage through small-scale experiments, especially in high electrolyte or complex formulation systems.

Question 9

In which industries and processes is G-25 Glycereth-25 primarily used?

Accepted Answer

G-25 Glycereth-25 is a multifunctional nonionic surctant widely used in six major industries: personal care, textiles, metalworking, industrial cleaning, emulsion polymerization, and pesticide formulations, primarily performing key process functions such as emulsification, solubilization, moisturizing, lubrication, and dispersion. Detailed Description G-25 Glycereth-25 is a nonionic surctant produced by the precisely controlled polymerization reaction of natural glycerin with ethylene oxide. Its INCI name is Glycereth-25, and its CAS number is 31694-55-0. Its molecular structure contains both polyhydrophilic groups and polyoxyethylene chains, giving it a very high hydrophilic-lipophilic balance. It remains stable over a wide pH range and is resistant to acids, alkalis, and electrolytes, with excellent hard water resistance. With its outstanding emulsifying and solubilizing capabilities, superior moisturizing and emollient properties, excellent chemical stability, and mild, safe toxicological profile (rat oral LD50 > 5000 mg/kg, classified as practically non-toxic), this product has become a key functional component in formulations across numerous industries. The specific application processes for each industry are detailed below. Detailed Explanation of Major Application Industries and Processes 1. Cosmetics and Personal Care G-25 is most widely used in this field, primarily playing three process roles: Efficient Solubilizer: Used in transparent makeup removers, skincare serums, perfumes, and gels, it provides significant solubilization effects for fragrances, essential oils, and poorly soluble active ingredients, resulting in a transparent and stable product appearance. O/W Emulsifier: As a mild emulsifier in creams, lotions, and cleansing oils, it effectively reduces the oil-water intercial tension, forming a stable and fine dispersion system. Moisturizing Additive: Used in rinse-off products such as shampoos and body washes, its molecular structure has good affinity with the skin's natural moisturizing ctors, enhancing the post-wash feeling of hydration and providing a smooth, non-sticky tactile experience. 2. Textile Industry In the textile field, G-25 is mainly applied in two process stages: first, as a key component in spinning oils for synthetic fibers, providing excellent antistatic and bundling properties to ensure smooth spinning; second, as a softening agent in bric finishing processes, imparting a fluffy and smooth hand feel to synthetic fibers and blends, while reducing static electricity generated by fiber friction, thereby improving wearing comfort. 3. Metalworking Fluids G-25 serves dual functions as an emulsifier and lubricant in water-based metal cutting fluids, grinding fluids, and hydraulic fluids. It forms a stable working emulsion, effectively dispersing processing heat, reducing friction coefficient and wear, improving machining accuracy, and extending tool life. Its excellent hard water resistance ensures long-term stability of the working fluid under poor water quality conditions, preventing demulsification caused by calcium and magnesium ions. 4. Industrial Cleaners As a low-foaming or controlled-foaming nonionic surctant, G-25 is suitable for high-pressure spray cleaning and immersion cleaning of hard surces such as metal parts, glass, and plastics. Its excellent wetting, penetrating, and solubilizing abilities effectively remove oils and dirt, and it is easily rinsed off without residue. Its low-foaming characteristic makes it particularly suitable for high-pressure spray systems, avoiding foam overflow issues. 5. Emulsion Polymerization In the emulsion polymerization of synthetic resins, coatings, and adhesives, G-25 is used as an emulsifier and stabilizer. It helps uniformly disperse monomers in the aqueous phase and controls the latex particle size distribution, thereby enhancing the storage stability, mechanical stability, and film-forming properties of the final product. This application fully utilizes the electrolyte tolerance advantage brought by its nonionic nature. 6. Pesticide Formulations G-25 is used as an emulsifier and spreading synergist in water-based pesticide formulations (e.g., emulsifiable concentrates, emulsions in water, suspension concentrates). On one hand, it assists in dissolving poorly soluble technical materials and forming stable emulsions; on the other hand, it significantly enhances the wetting and spreading ability of the spray liquid on plant leaves, increasing coverage area and improving the effective utilization rate and control efficacy of pesticides. Technical Parameters ParameterDescription Product NameG-25 Glycereth-25 INCI NameGlycereth-25 CAS Number31694-55-0 Ionic TypeNonionic Surctant Chemical CompositionPolyether of glycerin and ethylene oxide (25 EO) AppearanceColorless to slightly yellow liquid or paste pH Stability RangeStable over a wide pH range (resistant to acids, alkalis, and electrolytes) Toxicological ClassificationPractically non-toxic (LD50 > 5000 mg/kg) BiodegradabilityReadily and rapidly biodegradable (OECD 301F, >60% degradation in 28 days) Skin IrritationNon-irritating (Rabbit, Primary Irritation Index = 0) Eye IrritationMildly irritating (reversible within 48 hours) Note: Please refer to the product Certificate of Analysis (COA) for specific physicochemical index ranges. Application Recommendations Personal Care Formulations: It is recommended to add G-25 during the cooling phase of formulation (below 40°C). When used as a solubilizer, attention should be paid to the addition order; typically, pre-mix G-25 with oil-soluble components first, then slowly add to the aqueous phase. Metalworking Fluids: Recommended dosage should be adjusted based on the base oil type, typically 3%-8% of the total formulation. Combining with anionic emulsifiers can further enhance emulsion stability. Industrial Cleaning: When used as the main surctant, the recommended dosage is 1%-5% of the total cleaning solution. Its low-foaming characteristic eliminates the need for additional defoamers. Emulsion Polymerization: Recommended dosage is 1%-3% of the total monomer amount, resulting in a latex system with uniform particle size distribution. Pesticide Formulations: It is recommended to use G-25 in combination with anionic emulsifiers (e.g., calcium salts) to synergistically enhance emulsion stability and liquid adhesion. Notes and Precautions Storage Conditions: Store at temperatures between 10°C and 40°C, avoid freezing and prolonged high-temperature exposure to sunlight, and prevent product moisture absorption and deterioration. Keep containers tightly sealed. Handling Protection: Although the product has extremely low irritation, it is still recommended to wear impermeable gloves and chemical safety goggles during handling to avoid prolonged or repeated contact. Physical Form Changes: The appearance of this product may transition between liquid and paste depending on temperature, which is a normal physical phenomenon and does not affect performance. If the product is in a paste form before use, it can be gently warmed to 30-40°C to restore fluidity. Incompatible Substances: Avoid storage or direct mixing with incompatible substances such as strong oxidizers, strong acids, and strong alkalis. Detailed Safety Information: Be sure to consult the product Safety Data Sheet (SDS) and Certificate of Analysis (COA) before use.

Question 10

What are the physicochemical technical parameters of G-25 Glycereth-25?

Accepted Answer

G-25 Glycereth-25 is a high-performance nonionic surctant, with physicochemical technical parameters including molecular weight approximately 1200, HLB value 13.5, cloud point >100°C, and other indicators. The specific parameters are summarized as follows. Detailed Description G-25 Glycereth-25 (Glycereth-25) is produced from natural glycerol and approximately 25 moles of ethylene oxide through precisely controlled polymerization. The product appears as a colorless to slightly yellow transparent liquid. It is a nonionic surctant with hygroscopicity, a melting point below -10°C (liquid at room temperature), a flash point above 200°C, and under normal operating conditions, it is neither flammable nor explosive. Its chemical properties are stable at room temperature, but prolonged contact with strong acids, strong bases, and high temperatures should be avoided. The product purity is ≥99% (solid content ≥99%), free alcohol content ≤0.5%, and moisture content ≤1.0%. Total heavy metals are controlled at ≤10 mg/kg, arsenic content ≤2 mg/kg, meeting the safety standards of fine chemicals. The pH value of a 1% aqueous solution is 5.0~7.0, nearly neutral, with very low skin irritation. The following is a complete table of physicochemical technical parameters, sourced from the Guoli Chemical Product Certificate of Analysis (COA) and product standards. Technical Parameters Parameter ItemSpecification Value Basic Information INCI NameGlycereth-25 CAS Number31694-55-0 Molecular FormulaC₃H₅O(CH₂CH₂O)nH, n≈25 Molecular WeightApproximately 1200 Ionic TypeNonionic AppearanceColorless to slightly yellow transparent liquid Physical Properties DensityApproximately 1.05~1.10 g/cm³ Kinematic Viscosity (40°C)Approximately 150 mm²/s Rotational Viscosity (25°C)Approximately 150 mPa·s Refractive Index (25°C)Approximately 1.465 Melting Point< -10°C (liquid) Flash Point>200°C Water SolubilityReadily soluble in water HygroscopicityHygroscopic Surce Activity Parameters HLB Value13.5 Cloud Point (1% Aqueous Solution)>100°C Surce Tension (0.1%, 25°C)Approximately 32 mN/m Critical Micelle Concentration (CMC)Approximately 0.1% (w/v) Foaming PropertyLow foaming Penetration Power (Canvas Sink Method)>300 s Chemical Indicators pH Value (1% Aqueous Solution)5.0~7.0 pH Value (5% Aqueous Solution)5.0~7.5 Acid Value≤0.5 mg KOH/g Hydroxyl ValueApproximately 130~150 mg KOH/g Saponification Value≤2 mg KOH/g Iodine Value≤1 g I₂/100g Amine Value≤1 mg KOH/g Tertiary Amine Content≤0.5% Unsaturation<0.01 mol/kg Monophosphate Content≤0.1% Diphosphate Content≤0.1% Free Phosphoric Acid≤0.1% Combined Phosphorus≤0.05% Monoester/Diester ContentNone Purity and Impurity Control Active Matter Content≥99% Solid Content≥99% Free Alcohol≤0.5% Moisture≤1.0% Total Heavy Metals≤10 mg/kg Arsenic (As)≤2 mg/kg Chemical Stability and Safety Parameters Chemical StabilityStable at room temperature; avoid prolonged contact with strong acids, strong bases, and high temperatures Alkali ResistanceResistant to dilute alkalis; may degrade under high temperature concentrated alkalis Physicochemical HazardNon-flammable, non-explosive GHS Hazard ClassificationNot classified as physical, health, or environmental hazard Biodegradability (OECD 301F)28-day degradation rate > 60% Bioaccumulation PotentialNot bioaccumulative Toxicological Parameters Acute Oral Toxicity (Rat LD₅₀)>5000 mg/kg (Practically non-toxic) Acute Dermal Toxicity (Rat LD₅₀)>2000 mg/kg Skin Irritation (Rabbit)Non-irritating (Primary irritation index 0) Eye Irritation (Rabbit)Mildly irritating (Reversible within 48 hours) Skin Sensitization (Guinea Pig)

G-25 Glycerol Ethoxylate 25E

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Property	Value
CAS No.	31694-55-0
Molecular Formula	C3H5O(CH2CH2O)nH, n≈25
Appearance	Colorless to pale yellow viscous liquid
Ionic Type	Nonionic
Avg. Molecular Weight	Approx. 1200
Cloud Point	>100°C (1%aq. soln.)
Active Content	≥99
pH Value(1%)	5.0~7.0
pH Value(5%)	5.0~7.5
Iodine Value	≤1
Solubility	Readily soluble in water
Surface Tension	~32 mN/m (0.1%, 25°C)
CMC	~0.1% (w/v)
Acid Value	≤0.5
Saponification Value	≤2
Hydroxyl Value	~130~150 mg KOH/g
Moisture	≤1.0
Density	~1.05~1.10 g/cm³
Kinematic Viscosity	~150 mm²/s (40°C)
Refractive Index	~1.465 (25°C)
Flash Point	>200°C
Hygroscopicity	Hygroscopic
Chemical Stability	Stable at room temperature; avoid strong oxidizers
Amine Value	≤1
Tertiary Amine Content	≤0.5%
Penetration	>300 s (canvas disc)
Foam Property	Low foam
Alkali Resistance	Resistant to dilute alkali; may degrade in hot concentrated alkali
Unsaturation	<0.01 mol/kg
Viscosity	~150 mPa·s (25℃)
Melting Point	< -10°C (liquid)
Free Phosphoric Acid	≤0.1%
Low Shear Viscosity	~150 mPa·s
Solid Content	≥99%
Free Alcohol	≤0.5%
Phosphate Monoester	≤0.1%
Phosphate Diester	≤0.1%
Bound Phosphorus	≤0.05%
Heavy Metal	≤10 mg/kg
Arsenic	≤2 mg/kg

G-25 Glycerol Ethoxylate 25E

Product Details

Applications

Properties

Safety

Product Overview

Packaging and Storage

Specialty Applications

Product Properties

Safety

GHS

Handling

Storage

First Aid

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