PEG600MO (polyethylene glycol 600 monooleate) is a nonionic surfactant produced by the esterification of polyethylene glycol with natural oleic acid. Under normal storage conditions, this product is relatively chemically stable. However, due to the presence of ester bonds and unsaturated double bonds in its molecular structure, prolonged exposure to high temperature, humidity, or strong light may lead to slow hydrolysis or oxidation. Therefore, proper storage is crucial to maintain product performance.
This product is typically a light yellow to yellow liquid or paste. At low temperatures, it may become turbid or solidify, which is a normal physical change and does not affect product quality. Simply allow it to return to room temperature and stir well before use. After opening, use as soon as possible. For long-term storage, it is recommended to replace the air in the container with nitrogen to slow down oxidation.
| Storage Element | Specific Requirement |
|---|---|
| Temperature Range | Recommended 5–30°C, avoid freezing and high temperatures |
| Container Requirements | Keep container tightly closed; stainless steel, glass, or HDPE are recommended. Avoid long-term contact with metals such as copper or aluminum |
| Environmental Conditions | Dry, well-ventilated indoor area, away from heat sources, open flames, sparks, and direct strong light |
| Isolation Storage | Store separately from incompatible substances such as oxidizers, strong reducing agents, strong acids, and strong bases |
| Spill Containment | The storage area should be equipped with spill containment facilities to prevent the product from entering drains or waterways |
The product database of Hai'an County Guoli Chemical Co., Ltd. does not contain official shelf life data for PEG600MO. According to industry common practice for this type of nonionic surfactant (PEG fatty acid ester), under unopened original containers and strictly following the above storage conditions, the shelf life is typically 1–2 years. The actual shelf life should be based on the batch number and production date marked on the product packaging label. It is recommended to follow the "first in, first out" principle for inventory management.
After opening, due to exposure to air and moisture, it is recommended to use the product within 6 months. If the product shows obvious stratification, off-odor, significant color darkening, or irreversible separation, discontinue use and perform quality re-testing.