Stearic Acid Polyoxyethylene Ether SG-10 (PEG-10 Stearate) is a non-ionic surfactant that appears as a light yellow paste to solid at room temperature. Due to the polyoxyethylene chain segment in its molecular structure, the product has a certain hygroscopicity. Improper storage can easily lead to moisture absorption, caking, or changes in properties. Therefore, proper storage methods are crucial for maintaining product performance and effectiveness.
According to the product safety data sheet, this product should be stored in a cool, dry, and well-ventilated dedicated warehouse, away from heat sources, sparks, and open flames. The container must be kept sealed to prevent moisture absorption, water ingress, or cross-contamination with other materials. The recommended storage temperature should not exceed 40°C to avoid product softening, deformation, or accelerated oxidative deterioration due to high temperatures. Additionally, this product should be stored separately from strong oxidizing agents and acidic substances to prevent incompatible reactions.
Regarding the shelf life, there is currently no official shelf life mark for this product in the product database. Generally, for polyoxyethylene fatty acid ester non-ionic surfactants, under unopened and compliant storage conditions, the recommended usage period for industrial-grade products is typically 12–24 months. Prolonged storage may lead to color deepening, pH drift, or reduced emulsifying performance. It is recommended to follow the "first in, first out" principle and use the product as soon as possible after opening. If the product shows significant color deepening, off-odor, or severe caking, it should be discontinued and undergo quality re-inspection.
| Storage Element | Specific Requirement |
|---|---|
| Storage Environment | Cool, dry, and well-ventilated dedicated warehouse |
| Temperature Requirement | Not exceeding 40°C, avoid high temperatures |
| Container Status | Keep sealed to prevent moisture and water ingress |
| Away from Sources | Heat sources, sparks, open flames |
| Isolated Storage | Store separately from strong oxidizing agents and acidic substances |
| Floor Requirement | Anti-permeable floor, equipped with spill containment facilities |
Before use, check the appearance of the product to ensure it is normal (light yellow paste to solid, without abnormal color changes or off-odor). Use clean and dry tools when taking out the product to avoid introducing moisture and impurities into the container. Seal the container immediately after taking out the product to minimize contact time with air. If the product solidifies and hardens due to low temperatures, it can be slowly rewarmed at 25–35°C before use. Do not directly expose it to high-temperature baking or open flames.