Alkali-resistant Penetrant AEP (fatty alcohol polyoxyethylene ether phosphate) is an anionic surfactant with good chemical stability, especially resistant to high concentrations of alkali. As long as basic storage specifications are followed, keeping the container sealed and avoiding extreme temperatures, the product's performance can remain stable for a long time. This product is hygroscopic, so after opening the drum, it should be resealed as soon as possible to prevent moisture from entering, which could cause dilution or deterioration of the product.
Regarding the shelf life, there is no specific fixed shelf life value in Guoli Chemical's official product database. According to industry practice in the chemical sector and the chemical characteristics of this product (resistant to acid, alkali, high temperature, non-decomposing, non-oiling), under strict storage conditions, the product in its original sealed packaging can typically be stored stably for 12 to 24 months. It is recommended that users refer to the expiration date or re-inspection period indicated on the batch-specific factory inspection report (COA). For opened products on site, it is recommended to use them within 6 months.
| Storage Element | Specific Requirements |
|---|---|
| Temperature Range | Keep at 5℃~40℃, prevent freezing (melting point <0℃) and high-temperature deterioration |
| Sealing Requirement | Container must be kept sealed; reseal immediately after opening to prevent moisture absorption |
| Environmental Conditions | Cool, dry, well-ventilated dedicated warehouse, away from heat sources, open flames, and direct sunlight |
| Packaging Material | Must use alkali-resistant materials, such as polyethylene (PE) drums, stainless steel containers (standard packaging: 50kg/200kg plastic drums, IBC totes) |
| Prohibited Mixed Storage | Strictly separate from acids, oxidizers, food, and feed; avoid mixed storage |
| Inventory Management | Strictly follow the "First In, First Out" principle; regularly check packaging integrity to prevent leakage |
Before using Alkali-resistant Penetrant AEP that has been stored for a period, it is recommended to perform a simple visual inspection: the normal product should be a colorless to light yellow transparent liquid. If there is severe turbidity, stratification, precipitation, or unusual odor, stop use and send a sample for testing. For critical processes (such as alkali-oxygen one-bath scouring and bleaching, mercerizing penetration), it is recommended to first conduct a small-scale compatibility test to confirm that the penetration and wetting properties meet requirements before batch use.