G-25 Glycereth-25 is a mild, low-toxicity nonionic surfactant. During operation, key precautions include personal protection, controlled storage conditions, and knowledge of emergency response procedures.
Detailed Explanation
G-25 Glycereth-25 is a nonionic surfactant produced by polymerizing natural glycerol with ethylene oxide. Under normal operating conditions, it is non-flammable and non-explosive. According to GHS classification criteria, it does not fall into physical, health, or environmental hazard categories. Nevertheless, standard chemical handling procedures should be followed during use and storage to minimize potential risks.
This product is non-irritating to the skin (rabbit, primary irritation index = 0), mildly irritating to the eyes (reversible within 48 hours), negative for skin sensitization, and has practically non-toxic acute toxicity (rat oral LD₅₀ > 5000 mg/kg). However, prolonged or repeated exposure may still cause discomfort. Therefore, it is recommended to always wear impermeable gloves, chemical safety goggles, and protective clothing during handling, and to work in a well-ventilated area.
Ecologically, G-25 exhibits good biodegradability (degradation rate > 60% after 28 days under OECD 301F standard) and is not bioaccumulative, making it an environmentally friendly product. Waste should be disposed of at licensed professional waste treatment facilities and must not be discharged into soil, water bodies, or drainage systems.
Technical Parameters
| Parameter | Value |
|---|
| Ionicity | Non-ionic |
| Appearance | Colorless to pale yellow liquid or paste |
| 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 | Negative (Guinea Pig Maximization Test) |
| Genotoxicity (Ames Test) | Negative, no genotoxicity |
| Biodegradability (OECD 301F) | Degradation rate > 60% in 28 days |
| Storage Temperature | 10°C to 40°C |
Application Recommendations
In practical applications, it is recommended to adjust usage methods according to different fields:
- Personal Care Products: When used as a solubilizer, pre-mix G-25 with fragrance or essential oils evenly, then slowly add to the aqueous phase to help form a clear and stable product. As an O/W emulsifier, it is recommended to combine with appropriate co-emulsifiers to enhance emulsion stability.
- Textile Industry: When used as a spinning oil component, control the oil pick-up rate to avoid excessive fiber slippage; when used as a softener, it can be compounded with cationic softeners, but attention should be paid to ionic compatibility.
- Metalworking Fluids: It is recommended to use deionized or soft water when preparing working fluids. Although this product has excellent hard water resistance, high-quality water helps further extend the working fluid life.
- Industrial Cleaning: Its low-foaming property makes it suitable for high-pressure spray systems. The recommended working concentration ranges from 0.5% to 5% depending on the degree of oil contamination (specific concentration to be determined through experiments).
Precautions
- Personal Protection: Always wear impermeable gloves, chemical safety goggles, and protective clothing during operation; maintain good ventilation in the workplace to avoid aerosol accumulation; eating, drinking, and smoking are prohibited in the work area.
- Storage Requirements: Store in a cool, dry, well-ventilated place, maintaining temperature between 10°C and 40°C. Avoid freezing and prolonged exposure to high temperatures; keep containers tightly sealed, away from incompatible substances such as strong oxidizers, strong acids, and strong bases; regularly check packaging containers for leaks or damage.
- Emergency Procedures: In case of skin contact, immediately flush with plenty of running water and soap for at least 15 minutes; for eye contact, rinse continuously with plenty of water or saline for at least 15 minutes and seek medical attention as soon as possible; if ingested, do not induce vomiting, rinse mouth immediately and seek medical attention; for spills, contain and collect using inert absorbent materials (e.g., sand, vermiculite).
- Fire Response: The product itself is not flammable, but thermal decomposition may produce irritating fumes. Use water spray, dry powder, carbon dioxide, or alcohol-resistant foam for firefighting. Firefighters must wear positive-pressure self-contained breathing apparatus and full protective clothing.
- Waste Disposal: Dispose of waste and contaminated packaging in accordance with national and local environmental regulations. Prioritize incineration or deliver to licensed professional waste treatment facilities. Do not discharge into sewers or water bodies.
- Read Before Use: For detailed safety instructions, toxicological and ecotoxicological information, please refer to the Safety Data Sheet (SDS) and Certificate of Analysis (COA).
