Polyethylene glycol PEG-400 is a non-hazardous chemical, chemically stable at room temperature, but attention must be paid to environmental conditions during storage to ensure product quality. First, this product is highly hygroscopic, so the container must be kept tightly sealed, avoiding prolonged exposure to air to prevent moisture absorption, which can cause quality degradation, viscosity changes, or microbial growth.
Secondly, although PEG-400 has a high flash point (closed cup flash point about 238°C) and is not easily ignitable or explosive, it should still be kept away from heat sources, sparks, and open flames. The storage environment temperature should not be too high or too low; it is recommended to control it between 5°C and 30°C. Too low a temperature may increase product viscosity or even cause solidification, while too high a temperature may accelerate oxidative degradation.
In addition, PEG-400 should be stored separately from incompatible substances such as strong oxidizing agents and strong acids to avoid contact that could cause hazardous reactions. The warehouse should be kept dry and ventilated to prevent a damp environment from causing packaging corrosion or product moisture absorption and deterioration.
| Storage Element | Specific Requirement |
|---|---|
| Sealing | The container must be kept sealed to prevent moisture absorption |
| Temperature Range | Recommended to control between 5°C and 30°C |
| Environment Conditions | Cool, dry, well-ventilated |
| Fire Source Management | Keep away from heat sources, sparks, and open flames |
| Incompatible Substances | Store separately from strong oxidizers and strong acids |
| Air Quality | Avoid prolonged exposure to air |
In industrial production and laboratory use, it is recommended to adopt the method of small packaging and batch usage to reduce the risk of moisture absorption from frequent opening of large containers. If not used up after opening, it should be sealed promptly and used as soon as possible. For crystallisation or increased viscosity caused by long-term storage at low temperatures, the product can be slowly warmed to 20°C-30°C before use and gently stirred until uniform; product performance can return to normal.