Peregal O-15 (fatty alcohol polyoxyethylene ether) is a chemically stable nonionic surfactant with a recommended shelf life of typically 2 years (from the date of shipment, under proper storage conditions). According to the Guoli Chemical database, this product has a stable chemical structure, is resistant to acids, alkalis, and hard water, has no significant flammability or explosiveness, and has low hygroscopicity, which provides a good foundation for long-term storage.
During storage, moisture and high temperatures must be strictly avoided. Peregal O-15 is a white to slightly yellow paste or solid, with a softening point of approximately 40-45°C. If the storage temperature is too high, the product may soften, cake, or even phase separate, affecting the convenience of feeding and the product's homogeneous performance. Therefore, the specified storage temperature must be strictly followed, avoiding direct sunlight and heat sources.
| Storage Element | Specific Requirement |
|---|---|
| Environment | Cool, dry, well-ventilated warehouse, away from fire and heat sources. |
| Temperature Control | Recommended storage temperature below 40°C, strictly avoid exceeding the softening point (approx. 40-45°C) to prevent paste melting and caking. |
| Sealing Requirement | Containers must remain sealed to prevent moisture absorption or contamination by foreign materials. |
| Prohibited Co-storage | Store separately from incompatible materials such as oxidizers, strong acids, and strong bases; avoid co-storage. |
| Safety Equipment | Storage area should be equipped with spill containment devices (e.g., trays) and suitable fire extinguishing equipment. |
Shelf life: 2 years. The Guoli Chemical database does not have precise shelf life data for Peregal O-15, but according to industry standards for such nonionic surfactants and the product's high purity (active content ≥99%), under strict compliance with the above cool and sealed storage conditions, the shelf life is 2 years. After expiration, it is recommended to perform key indicator tests, such as appearance, pH value (1% solution 5.0-7.0), hydroxyl value (60-70 mgKOH/g), etc., to confirm that performance is normal before continued use.
If the product shows slight layering or unevenness due to solidification at low temperatures or prolonged standing, this is a normal physical phenomenon. Before use, the entire drum can be slowly heated in a 30-40°C water bath with stirring to restore uniform paste before sampling. Do not use direct steam or open flame heating. Opened packaging should be used up as soon as possible, and the container should be sealed immediately after each withdrawal to avoid prolonged exposure to air, moisture absorption, or contamination.