Stearyl Alcohol Polyoxyethylene Ether SG-40 is a white to slightly yellow waxy solid at room temperature, with a melting point of approximately 30-40°C (depending on the degree of polymerization). Therefore, temperature control during storage is particularly critical. Excessive heat may cause the product to melt and agglomerate, affecting its performance. Too low a temperature may cause the product to solidify and harden, which does not affect its chemical properties but may cause inconvenience during material retrieval. It is recommended to maintain the warehouse temperature within the stable range of 5°C~35°C.
Since this product is a nonionic surfactant containing polyoxyethylene segments in its molecular structure, it has certain hygroscopicity. If not sealed promptly after opening, the product may absorb moisture from the air, leading to surface deliquescence or agglomeration. Therefore, the packaging container must be kept airtight. Use original packaging or containers made of compatible materials such as stainless steel or plastic, and reseal immediately after each use.
In terms of chemical stability, SG-40 is stable under normal storage conditions. However, it should be kept away from strong oxidizing agents (such as peroxides, perchlorates, etc.) to avoid adverse reactions. The flash point of the product is above 200°C, making it non-flammable and non-explosive. Nevertheless, it should still be kept away from heat sources, flames, and direct sunlight, not only for safety considerations but also to maintain the long-term stability of product quality.
| Storage Element | Specific Requirements |
|---|---|
| Storage Temperature | 5°C ~ 35°C (to prevent melting and agglomeration at high temperatures or solidification and deterioration at low temperatures) |
| Environmental Requirements | Cool, dry, and well-ventilated |
| Light Requirements | Avoid direct sunlight |
| Heat Source Management | Keep away from heat sources and flames |
| Container Requirements | Keep airtight, use stainless steel or plastic containers; reseal immediately after opening |
| Incompatible Materials | Avoid co-storage with strong oxidizing agents (peroxides, perchlorates, etc.) |
| Shelf Life | 12 months from date of manufacture (expired products need retesting to determine usability) |
To ensure optimal performance when using the product, it is recommended to follow the "first-in, first-out" inventory management principle. If the product is approaching its shelf life or exhibits abnormal conditions (such as significant color darkening, odor generation, severe agglomeration that cannot be crushed), it is advisable to conduct small-scale tests before use to verify whether the emulsifying performance and dispersion effect still meet process requirements. Expired products are not necessarily ineffective, but they must be retested and qualified before continued use.