PEG400DL is classified as a non-hazardous substance with good safety characteristics, but basic chemical handling practices must still be followed, with emphasis on eye protection, storage temperature control, and leak prevention.
Detailed Explanation
PEG400DL (Polyethylene Glycol Dilaurate) is classified as a non-hazardous substance under the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), without the need for mandatory hazard pictograms, signal words, or hazard statements. It has very low acute oral toxicity (rat LD50 > 5,000 mg/kg), is non-irritating to the skin, causes only slight reversible eye irritation (recovery within 72 hours), and is negative in the Ames mutagenicity test, making it a non-ionic surfactant with excellent safety performance.
Despite its high safety profile, good industrial hygiene practices should be followed during handling and use. Avoid formation of aerosols or oil mists, ensure local effective ventilation before opening containers, and prevent prolonged contact with air to avoid moisture absorption or oxidation. Wash exposed skin thoroughly after handling, and do not eat, drink, or smoke in the work area. The product is readily biodegradable (OECD 301F, > 60% degradation in 28 days) and has low toxicity to aquatic organisms (fish/daphnia LC50/EC50 > 100 mg/L), but uncontrolled large-scale release into the environment should still be prevented.
For storage, recommended temperature is 5°C to 40°C, in a cool, dry, well-ventilated area away from strong oxidizing agents, strong bases, and strong acids. The product may become turbid or solidify at low temperatures, which is a normal physical phenomenon and does not affect product quality; simply allow it to return to room temperature and stir gently until homogeneous before use. Containers should be sealed immediately after use to prevent moisture absorption and foreign matter entry, preferably stored in original packaging or compatible containers such as stainless steel or high-density polyethylene.
Safety Technical Parameters
| Parameter | Value |
|---|
| Hazard Classification | Non-hazardous substance (GHS) |
| Appearance | Clear to slightly hazy, light yellow liquid |
| Flash Point (Closed Cup) | > 250 °C |
| Acute Oral Toxicity (Rat LD50) | > 5,000 mg/kg |
| Skin Irritation (Rabbit) | Non-irritating (4-hour closed patch test) |
| Eye Irritation (Rabbit) | Slight irritation, reversible within 72 hours |
| Mutagenicity (Ames Test) | Negative |
| Aquatic Toxicity | Fish/Daphnia LC50/EC50 > 100 mg/L (low toxicity) |
| Biodegradability | Readily biodegradable (OECD 301F, > 60% degradation in 28 days) |
| Recommended Storage Temperature | 5 °C to 40 °C |
Personal Protection and Emergency Response Recommendations
Personal Protective Equipment (PPE) Requirements:
- Eye/Face Protection: Wear safety goggles meeting safety standards to prevent splashes during operation.
- Skin Protection: It is recommended to use chemical-resistant protective gloves (e.g., nitrile gloves); if high exposure risk, wear protective clothing.
- Respiratory Protection: No special respiratory protection required under adequate ventilation; if aerosolizing or poor ventilation, wear a face mask with A/P type filter cartridge.
Emergency Response Measures:
- Skin Contact: Immediately flush with mild soap and plenty of water for at least 15 minutes, remove contaminated clothing and wash before reuse.
- Eye Contact: Immediately open eyelids and rinse thoroughly with plenty of running water or saline for at least 15 minutes; if pain, redness, or visual impairment persists, seek medical attention immediately.
- Inhalation: Move person to fresh air, keep at rest and in a position comfortable for breathing; if unwell, seek medical attention immediately.
- Ingestion: Rinse mouth with water, slowly drink 1 to 2 glasses of water, do not induce vomiting, never give anything by mouth to an unconscious person, seek medical attention immediately.
- Fire Response: Suitable extinguishing media are alcohol-resistant foam, dry powder, carbon dioxide; direct water jets are not recommended. High-temperature combustion may release carbon monoxide, carbon dioxide, and trace organic vapors; firefighters must wear self-contained positive pressure breathing apparatus and full protective equipment.
Precautions
- Use spill containment trays or secondary containment for storage during leak handling; have universal chemical absorbent pads available for quick response.
- Dispose of waste in accordance with local regulations as non-hazardous waste or chemical waste through qualified treatment facilities; do not discharge into sewers, surface waters, or soil .
- Turbidity or solidification due to low temperature is a normal physical phenomenon; allow to return to room temperature and stir well before use; do not heat directly or expose to open flame.
- Keep away from open flames, hot surfaces, and strong oxidizing agents to prevent high-temperature decomposition.
