Octadecylamine polyoxyethylene ether AC-1810 is a light yellow to yellow waxy solid at room temperature (melting point 40～50°C). During storage, special attention should be paid to environmental temperature and humidity control to prevent product melting, caking, or moisture absorption and deterioration. According to the official safety instructions of Guoli Chemical, this product should be stored in a special warehouse that is cool, dry, and well-ventilated, away from heat sources and direct sunlight.
The product database does not directly provide a specific shelf life value for this product. According to chemical industry practices and the high purity (active content ≥99%, moisture ≤0.5%) and chemical stability of this product, under strict adherence to storage conditions and maintenance of original container sealing, the recommended usage period for this nonionic surfactant is typically 2 years from the date of manufacture. Users are advised to perform small-scale evaluations to confirm performance before use, especially when approaching or exceeding the recommended period.
This product has certain hygroscopicity. After opening the container, it should be resealed as soon as possible to avoid prolonged exposure to humid air. When taking materials again, use clean and dry tools to prevent introduction of impurities or moisture; otherwise, even if not past the shelf life, product quality may be affected.
| Item | Parameter |
|---|---|
| Appearance (room temperature) | Light yellow to yellow waxy solid |
| Melting point | 40～50°C |
| Active content | ≥99% |
| Moisture | ≤0.5% |
| Chemical stability | Stable, avoid strong oxidants |
| Hygroscopicity | Hygroscopic |
| Recommended storage temperature | 5～35°C |
When reusing AC-1810, if the product color is significantly darkened, delamination, strong odor, or caking that is not easy to disperse occurs, discontinue use and contact the supplier for quality confirmation. For long-term inventory, it is recommended to follow the "first in, first out" principle and establish a regular visual inspection mechanism.