OP-21 Octylphenol Ethoxylate (CAS No.: 9036-19-5) is chemically stable at room temperature, but due to its hygroscopic nature, humidity in the storage environment must be strictly controlled. The product appears as a white to light yellow paste or solid, with a melting point between 45~50°C. Therefore, during high summer temperatures, direct sunlight and proximity to heat sources should be avoided to prevent softening or even stratification of the product.
According to GHS safety data requirements, this product is classified with hazards including skin irritation (Category 2), serious eye irritation (Category 2A), reproductive toxicity (Category 2), and aquatic environmental hazard (Category 2). Thus, the storage area must be locked (P405) and accessible only to authorized personnel with specialized training. The warehouse should be equipped with emergency spill response facilities, the floor should be impermeable, and the product should be stored strictly separate from food and feed.
Regarding shelf life, based on the physicochemical properties of the product and industry practice, under conditions of maintaining original sealed packaging and storage temperature controlled at 5~35°C, the recommended shelf life for unopened product is 24 months from the manufacturing date. After opening, it should be used as soon as possible, and the container must be resealed immediately after each use to prevent moisture absorption and contamination. If stored beyond the shelf life, it is recommended to contact the technical department of Guoli Chemical for re-testing, and use only after confirming all specifications are acceptable.
| Storage Parameter | Requirement |
|---|---|
| Storage Temperature | Recommended 5~35°C, avoid extreme high or low temperature |
| Relative Humidity | Keep dry environment, avoid high humidity |
| Container Condition | Sealed, prevent moisture absorption and entry of foreign matter |
| Storage Location | Cool, dry, well-ventilated, locked management |
| Keep Away From | Heat sources, open flames, direct sunlight, strong oxidizers |
| Packaging Specifications | 50kg plastic drum / 200kg plastic drum / IBC tote |
| Shelf Life | Unopened, recommended 24 months (from date of manufacture) |
If the product hardens or solidifies due to low-temperature storage, before use, gently heat in a water bath to 40~50°C and stir until homogeneous. Do not use open flames or direct steam heating to avoid local overheating which may cause product decomposition. After opening, remaining material should be sealed promptly and it is recommended to use within 3 months for optimal performance.