Polyethylene Glycol PEG-8000 is a high molecular weight nonionic water-soluble polymer with stable chemical properties. However, due to its certain hygroscopicity and thermal sensitivity, storage conditions directly affect product quality. Under improper storage conditions (such as high temperature, humidity, or open exposure), the product may experience softening, caking, moisture absorption degradation, or color darkening, affecting subsequent use.
Regarding shelf life, the product database does not currently provide official shelf life data. Based on industry practices and the physicochemical characteristics of this type of product, under strict compliance with storage conditions, the recommended shelf life for Polyethylene Glycol PEG-8000 is generally 2 years. It is recommended to follow the "first in, first out" principle and inspect the appearance (should be white waxy solid or free-flowing powder) before use. If significant discoloration, caking, or off-odor is found, discontinue use.
| Storage Element | Specific Requirements |
|---|---|
| Ambient Temperature | Avoid sustained temperatures above 40°C to prevent product softening and caking; store in a cool environment |
| Ambient Humidity | Keep dry to prevent product moisture absorption |
| Ventilation Conditions | Well-ventilated warehouse |
| Container Sealing | Keep container sealed; reseal immediately after use |
| Items to Avoid | Away from fire sources and heat sources; avoid co-storage and co-transport with strong oxidizers and strong acids |
| Packaging Method | Use woven bags with inner plastic lining, fiber drums, or stainless steel containers for packaging |
Seal the packaging immediately after each use to minimize the time the product is exposed to air. If the product has been opened and not used for a long time, it is recommended to conduct small-batch tests before use to confirm its solubility, color, and performance are normal. For applications in fields with strict quality requirements such as pharmaceuticals and cosmetics, it is recommended to use within 6 months after opening to ensure optimal performance.