Polyethylene glycol 400 monooleate (PEG400MO) is a chemically stable nonionic surfactant that does not undergo deterioration when stored under recommended conditions. The key storage principles are moisture-proof, heat avoidance, and sealing. The product has a certain hygroscopicity; exposure to high humidity environments will cause it to absorb moisture from the air, potentially affecting product purity and subsequent formulation accuracy. At the same time, it should be kept away from heat sources, sparks, and open flames to avoid unnecessary chemical changes caused by high temperatures.
Regarding the shelf life, the Guoli Chemical product database does not currently specify the exact shelf life data for this product. However, based on industry practices and the characteristics of similar nonionic surfactants (polyethylene glycol fatty acid esters), under the premise of following the recommended storage conditions, the expected shelf life of unopened original packaging is typically 12 to 24 months. It is recommended to follow the production date and expiration date indicated on the product packaging label and to adhere to the "first in, first out" inventory management principle.
| Storage Element | Specific Requirements |
|---|---|
| Storage Environment | Cool, dry, well-ventilated warehouse, away from heat sources, sparks, and open flames |
| Temperature Range | Recommended long-term storage temperature 5°C ~ 40°C |
| Container Material | Original container, carbon steel, stainless steel, or high-density polyethylene (HDPE) container |
| Sealing Requirements | Keep container tightly closed; reseal promptly after opening |
| Incompatible Substances | Strictly separate from strong oxidizers (e.g., peroxides, high-concentration nitric acid, perchlorates) |
| Moisture Protection | Avoid exposure to high humidity environments to prevent product from absorbing excessive moisture |
In daily use, it is recommended to immediately close the container after each material withdrawal to minimize the time the product is exposed to air. If repackaging for use, the repackaging container must also meet the above material requirements and be kept clean and dry. For warehouse management, it is recommended to store the product on shelves or pallets, avoiding direct contact with the ground to prevent moisture, and to properly label batches for traceability.
PEG400MO may experience solidification or increased viscosity at low temperatures (below 5°C). This is a physical change, not deterioration and does not affect product quality. Before use, gently warm the product to 20°C~30°C and stir evenly to restore normal fluidity. For heating, it is recommended to use indirect water bath heating; do not use open flames for direct heating.
It is recommended that users refer to the production date and expiration date indicated on the product packaging label. For products exceeding the labeled shelf life, key indicators such as appearance, acid value, and moisture content should be tested before use to confirm they are qualified before continued use. To obtain a more accurate shelf life statement for this product, it is recommended to directly contact the Guoli Chemical technical team for confirmation.