Polyethylene glycol PEG-600 (CAS No.: 25322-68-3) is a hygroscopic non-ionic polymer compound. The key to its storage is moisture prevention and temperature control. This product will become a waxy solid at low temperatures, which is a normal physical change and does not affect product quality. It only needs to be gently heated to return to a liquid state before use.
PEG-600 is chemically stable and exhibits good tolerance to acids, alkalis, and hard water. However, prolonged exposure to high temperature or high humidity environments may cause product dilution through water absorption, color deepening, or pH value changes. Therefore, the storage environment should be strictly controlled, and the product should be used as soon as possible after opening.
| Storage Requirement | Specific Description |
|---|---|
| Environmental Conditions | Cool, dry, well-ventilated warehouse, away from fire, heat sources and direct sunlight |
| Temperature Control | Recommended storage temperature not exceeding 40°C to avoid solidification or overheating |
| Container Requirement | Keep container tightly sealed to prevent product moisture absorption |
| Isolation Requirement | Store separately from strong oxidizers (such as peroxides, hypochlorites, permanganates) and strong acids, strong bases |
| Others | Keep away from food, beverages and animal feed; regularly check package integrity to prevent leakage |
According to Guoli Chemical product data, when strictly following the above storage conditions and keeping the container sealed intact, the recommended shelf life of polyethylene glycol PEG-600 is 2 years. Products beyond the shelf life should be retested for key indicators such as appearance, pH value, hydroxyl value, and can only be used after confirming compliance.