Tween T-81 (Polyoxyethylene (5) sorbitan monooleate) is a nonionic surfactant that appears as an amber oily liquid at room temperature. It is chemically stable, but proper storage conditions are essential for maintaining its product performance and extending its shelf life. During storage, special attention should be paid to temperature control, container sealing, and environmental conditions.
The storage temperature should be strictly controlled between 5°C and 30°C to avoid freezing and overheating. Low temperatures may cause increased viscosity or even solidification of the product, affecting ease of use; high temperatures may accelerate product oxidation, leading to deepening of color and increased acid value, which can affect emulsifying performance and application effects.
In addition, Tween T-81 should be kept away from incompatible substances such as strong oxidizing agents, and stored separately to avoid potential chemical reaction risks. Open flames and sparks should be prohibited in the warehouse. Although this product is not classified as a flammable hazardous material, good fire safety conditions are a basic requirement for chemical storage.
| Storage Elements | Specific Requirements |
|---|---|
| Ambient Temperature | Control between 5°C and 30°C, avoid freezing and overheating |
| Environmental Conditions | Cool, dry, well-ventilated area |
| Container Status | Keep container tightly sealed to prevent leakage |
| Container Material | Use corrosion-resistant, well-sealed containers with clear labeling |
| Away from Ignition Sources | Keep away from heat, sparks, and open flames |
| Isolated Storage | Store separately from incompatible substances such as strong oxidizing agents |
| Inspection Frequency | Regularly check containers for signs of damage or leakage |
Under normal storage conditions, Tween T-81 has good long-term stability. It is recommended to follow the "first in, first out" principle for inventory usage. Once opened, the product should be used as soon as possible. Immediately reseal the container after each use to reduce exposure to air and moisture. If slight stratification or turbidity occurs after long-term standing, the product can be mixed well and used if no degradation is confirmed.