OS-15 (AEO-15), chemically known as fatty alcohol polyoxyethylene (15) ether, is a nonionic surfactant. At room temperature, it appears as a white to slightly yellow waxy solid with a melting point of about 20～25°C and is hygroscopic. Therefore, the storage environment is crucial for maintaining its product quality and performance. This product is chemically stable and does not easily decompose or deteriorate under normal storage conditions, but it must be kept away from strong oxidizers to prevent oxidative degradation.
According to the product database provided by Guoli Chemical, OS-15 has good chemical stability under normal storage conditions. Due to its hygroscopic nature, exposure to moisture may cause caking, which does not affect chemical performance but can make handling inconvenient. Thus, the container must be kept sealed. If the product freezes at low temperatures, it should be thawed naturally at room temperature. Direct heating with an open flame is strictly prohibited, as localized overheating may damage the product structure or pose safety risks.
| Storage Parameter | Requirement |
|---|---|
| Storage Temperature | 5～35°C (avoid freezing and excessive heat) |
| Storage Environment | Cool, dry, well-ventilated dedicated warehouse |
| Container Status | Keep sealed to prevent moisture absorption |
| Substances to Avoid | Ignition sources, heat sources, strong oxidizers, strong acids, strong bases |
| Spill Protection | Storage area should be equipped with spill containment facilities (e.g., trays) |
| Packaging Specifications | 50kg plastic drum / 200kg plastic drum / IBC tote |
| Packaging Inspection | Keep intact, label with product name and safety markings, regularly check inventory status |
The product database of Guoli Chemical does not provide explicit shelf life data for OS-15. Based on industry common practice for nonionic surfactants (fatty alcohol polyoxyethylene ethers), under strict adherence to the above storage conditions, the recommended usage period for unopened original packaging is generally 12 to 24 months. Actual shelf life is affected by storage temperature, humidity, packaging seal integrity, and other factors. It is recommended to follow the "first in, first out" inventory management principle. After opening, the product should be used as soon as possible, and the container should be resealed immediately after each use to prevent moisture absorption and contamination.
Before opening the product, check the packaging for integrity, ensuring no leakage, discoloration, or abnormal odor. If, after opening, the product color significantly darkens (turns dark yellow or brown), stratification occurs, or there is a rancid odor, it may indicate oxidative deterioration. In such cases, discontinue use and contact the supplier for confirmation. For long-term stored products, samples can be taken for small-scale testing before batch use to verify whether key properties such as emulsification and dispersion meet process requirements.