Tween T-20 laurate (polyoxyethylene (20) sorbitan monolaurate, CAS No.: 9005-64-5) is a relatively mild non-ionic surfactant, but necessary safety operating procedures must still be followed during use. This product may cause mild skin irritation (H316) and serious eye irritation (H319). Long-term or repeated exposure can cause skin sensitization (H317) and is harmful to aquatic life (H402). Therefore, it is essential to understand the product's hazard characteristics and be fully prepared for protection before operation.
According to the Safety Data Sheet of Guoli Chemical, when handling Tween T-20, wear impermeable gloves, chemical safety goggles, and face shields, and wear protective clothing. Avoid inhalation of vapors or sprays, and ensure good ventilation in the workplace. Contaminated work clothing must not be removed from the work site and must be cleaned before reuse. After work, thoroughly wash hands and exposed skin with soap and water. Eating, drinking, or smoking is strictly prohibited in the work area. Operators should receive standardized safety training.
This product is chemically stable but may undergo hydrolysis under strong acids, strong bases, and high temperatures. Therefore, it should be avoided from contact with incompatible substances such as strong oxidizers and strong acids. Tween T-20 is flammable with a flash point above 110°C. Keep away from heat sources, sparks, and open flames during storage and use. Recommended storage temperature is 5°C to 30°C, avoiding freezing or prolonged exposure to high temperatures. Due to its hygroscopic nature, containers must be kept tightly closed.
| Parameter | Data |
|---|---|
| Product form | Light yellow to amber viscous liquid |
| Ionic type | Non-ionic surfactant |
| HLB value | 16.7 |
| Cloud point (1% aqueous solution) | 76～78°C |
| pH of 1% aqueous solution | 5.0～7.0 |
| Flash point | >110°C |
| Density | Approximately 1.10 g/cm³ |
| Hygroscopicity | Hygroscopic |
| Chemical stability | Stable, may hydrolyze under strong acids, strong bases, and high temperatures |
| Solubility | Easily soluble in water, methanol, ethanol |
| Flammability characteristics | Flammable |
Data source: Guoli Chemical Product Database
When used in cosmetic formulations, it is recommended to add at low temperature or room temperature to avoid prolonged high-temperature heating that may cause hydrolysis and failure. In the food industry, strictly comply with the usage scope and maximum dosage specified in GB 2760. In biochemical experiments, when used as a washing solution for ELISA or Western blot, the common concentration is 0.05% to 0.1% (v/v). In pesticide or industrial cleaning formulations, it can be compounded with non-ionic and anionic surfactants, but attention should be paid to compatibility with strong acid and strong base systems.