Span S-80 (Sorbitan monooleate) is a chemically stable nonionic surfactant that is not prone to hydrolysis or oxidative degradation under normal storage conditions. To ensure the product quality remains optimal, controlling the storage environment is crucial. The product should be stored in a dedicated chemical storage area that is cool, dry, and well-ventilated. The container must be kept tightly sealed to prevent moisture and impurities from entering.
Regarding the shelf life, according to general standards for nonionic surfactants in the chemical industry, Span S-80, under original unopened packaging and compliant storage conditions, typically has a shelf life of 24 months (2 years). However, the specific shelf life of the product should be based on the expiration date indicated on the product packaging or the Certificate of Analysis (COA). Each batch of products from Guoli Chemical is accompanied by a corresponding quality inspection report.
It should be noted that even if the product is within its shelf life, improper storage (such as prolonged exposure to high temperature, high humidity, or loose sealing) may lead to color deepening, viscosity changes, or decreased emulsifying performance. Therefore, it is recommended to follow the "first-in, first-out" principle and use the product as soon as possible within the shelf life.
| Storage Factor | Specific Requirement |
|---|---|
| Storage Temperature | Below 40°C recommended, avoid high temperature causing product degradation or color deepening |
| Environment Requirement | Cool, dry, well-ventilated area |
| Container Condition | Keep sealed to prevent moisture absorption and ingress of foreign matter |
| After Opening | Re-seal opened containers tightly and store upright to prevent leakage |
| Substances to Avoid | Avoid contact with incompatible materials such as strong oxidizers |
| Fire Source Management | Keep away from heat, sparks, and open flame (flash point >149°C) |
| Reference Shelf Life | Typically 24 months under unopened conditions, refer to product COA |
For optimal performance, please pay attention to the following scenarios: