Polyethylene glycol PEG-800 is hygroscopic to some extent, so the storage environment must be kept dry. The container should be resealed promptly after use to prevent moisture absorption, caking, and contamination by foreign substances. The product is chemically stable and not prone to degradation under normal storage conditions, but it is still necessary to avoid high-temperature environments, as high temperatures may cause the product to melt and increase the risk of oxidation.
Although the product is not classified as a hazardous chemical, it should still be kept away from incompatible substances such as strong oxidizers, strong acids, and strong bases to prevent reactions or degradation. Although PEG-800 is not flammable (closed-cup flash point approx. 240–270°C), the storage area should still be kept away from heat sources, sparks, and open flames, as the product can melt and burn under high-temperature conditions.
In addition, the floor of the storage area should be treated with anti-slip measures, as spilled solid PEG particles may pose a slip hazard. The storage area should also be equipped with appropriate spill containment materials (such as inert absorbents) to address potential spills.
| Storage Parameter | Requirement |
|---|---|
| Storage Temperature | Not higher than 40°C, lower storage temperature is better |
| Environmental Requirement | Cool, dry, well-ventilated, avoid direct sunlight |
| Container Condition | Keep sealed, reseal promptly after opening |
| Flash Point (Closed Cup) | Approx. 240–270°C |
| Incompatible Substances | Strong oxidizers, strong acids, strong bases |
| Hygroscopicity | Hygroscopic to some extent, needs moisture protection |
In various application fields, following proper storage conditions ensures stable performance of PEG-800: The pharmaceutical preparation industry needs to pay special attention to moisture protection to avoid weighing errors and formulation quality fluctuations caused by moisture absorption; production workshops for personal care products and cosmetics should keep the warehouse dry and clean; in industrial lubrication and textile processing scenarios, it is recommended to store the product on indoor shelves to avoid the influence of ground moisture. If the product shows slight moisture absorption after long-term storage, it can be dried at low temperature (not exceeding 50°C) before continued use, but the impact on the final product quality should be evaluated.