Polyethylene Glycol PEG-4000/6000 series are non-ionic high molecular polymers, appearing as white to slightly yellow waxy solids or flakes at room temperature. This product has strong hygroscopicity, readily absorbing moisture from the air, so the core of storage is moisture-proof sealing. Once damp, the product may clump and deteriorate, affecting its application effectiveness in pharmaceuticals, daily chemicals, textiles, and other fields.
In terms of temperature control, it is recommended to maintain the warehouse temperature within the 10-30°C room temperature range. Although PEG-4000/6000 have relatively high melting points (typically between 54-63°C), prolonged exposure to high temperatures may cause the product to darken in color and broaden the molecular weight distribution. Also, avoid excessive hardening due to too low temperature, which generally does not affect the intrinsic quality of the product.
Safety aspects require special attention: When fine dust of PEG-4000/6000 mixes with air to a certain concentration, it may form an explosive mixture (dust explosion class St1). Therefore, the storage area must be away from open flames, sparks, and hot surfaces. All equipment should be grounded to prevent static electricity accumulation.
| Storage Parameter | Specific Requirement |
|---|---|
| Temperature Range | Recommended 10-30°C (cool room temperature environment) |
| Humidity Requirement | Dry environment, strictly moisture-proof |
| Ventilation Condition | Well-ventilated warehouse |
| Packaging Seal | Container must be sealed |
| Incompatible Materials | Keep away from strong oxidizing agents (peroxides, potassium permanganate, concentrated nitric acid, etc.) |
| Dust Explosion Class | St1, minimum ignition temperature of dust cloud > 400°C |
| Flash Point (Open Cup) | > 240°C |
| Stacking Requirements | Follow local safety regulations to prevent tipping and damage to packaging |
To ensure the product remains in optimal condition before use, it is recommended to follow the "First In, First Out" inventory management principle. Unused product after opening should be resealed immediately to avoid prolonged exposure to air. For customers storing in large quantities, consider equipping dehumidifiers or desiccants to further reduce warehouse humidity.