Emulsifier A-103 (oleic acid polyoxyethylene ester) is a nonionic surfactant with relatively stable chemical properties, but improper storage conditions may still lead to moisture absorption, oxidation, or layering of the product, affecting emulsifying efficacy and formulation stability. Correct storage methods are crucial for maintaining product performance.
Regarding the shelf life, the Guoli Chemical product database does not yet provide clear shelf life parameters for this product. According to industry practice, nonionic surfactants of the oleic acid polyoxyethylene ester type, when strictly following storage conditions, are generally recommended to be used within 12 to 24 months after production. The actual shelf life should be based on the validity period marked on the product packaging label or the Certificate of Analysis (COA) issued with the shipment. It is recommended to follow the "first in, first out" principle and regularly inspect the appearance and characteristics of inventory products.
| Storage Factor | Specific Requirements |
|---|---|
| Temperature | It is recommended to control at 5–35°C, avoiding freezing or overheating. Too low temperature may cause the product to solidify or layer, while too high temperature may accelerate ester bond hydrolysis or oxidative discoloration. |
| Environment | A cool, dry, well-ventilated dedicated warehouse, away from heat sources, sparks, and open flames. |
| Container Sealing | Seal immediately after use to prevent moisture ingress. The molecular structure of oleic acid polyoxyethylene ester contains polyoxyethylene segments, which have strong hygroscopicity and will gradually absorb moisture when exposed to air. |
| Incompatible Substances | Keep away from incompatible substances such as strong oxidizing agents, strong acids, and strong bases to avoid chemical reactions leading to product deterioration. |
| Area Facilities | The storage area should be equipped with spill containment dikes, a floor made of impermeable material, and appropriate containment facilities. The warehouse should have clear hazard warning signs, and unauthorized personnel should be restricted from entry. |
| Regular Inspection | Regularly check containers for damage, rust, or leaks. If any abnormalities are found, immediately and safely transfer the product to avoid contamination or loss. |
Before using emulsifier A-103 that has been stored for a long time, it is recommended to first inspect the product appearance: the normal product should be a light yellow to brownish yellow oily liquid or paste, without obvious layering, precipitation, unusual odor, or significant darkening of color. If significant changes occur, it is recommended to conduct a small-scale evaluation of its emulsifying and dispersing performance before deciding whether to continue use.