MOA-4 (AEO-4) is a chemically stable nonionic surfactant with resistance to acids, alkalis, and hard water (source: Guoli Chemical Product Database). Under proper storage conditions, the product can maintain its core properties such as emulsification, penetration, and dispersion for an extended period. It should be noted that the product's freezing point is about 5°C, so attention should be paid to antifreeze in low-temperature winter environments to avoid inconvenience in use after solidification. However, solidification does not cause substantial damage to product quality; simply warm it to room temperature and stir evenly to restore normal use.
According to the requirements of Part 3 of the Safety Data Sheet (SDS) of Guoli Chemical, the storage of MOA-4 (AEO-4) should strictly follow the following conditions: store in a cool, dry, and well-ventilated warehouse, away from heat sources, sparks, and open flames; keep containers sealed to prevent moisture and impurities from entering; store separately from strong oxidizers, strong acids, strong bases, food, feed, etc., to avoid cross-contamination; the storage area should have corrosion-resistant and leak-proof flooring, and be equipped with emergency spill containment devices (such as trays or dikes).
Regarding the shelf life, the Guoli Chemical Product Database does not currently provide explicit shelf life data. According to industry practice and the chemical stability of this product (resistance to acids, alkalis, hard water, active content ≥99%), under the above storage conditions and with intact packaging, MOA-4 (AEO-4) can typically be stored stably for 1-2 years. It is recommended to refer to the shelf life indicated on the product's Certificate of Analysis (COA) and to check the product appearance before use (it should be a colorless to slightly yellow transparent liquid). If turbidity, stratification, or abnormal color changes are observed, quality re-testing should be conducted before deciding whether to use.
| Storage Element | Specific Requirements | Data Source |
|---|---|---|
| Storage Environment | Cool, dry, well-ventilated warehouse | Guoli Chemical SDS |
| Temperature Requirements | Stay away from heat sources, pay attention to antifreeze (freezing point approx. 5°C) | Guoli Chemical Product Database |
| Container Condition | Keep sealed to prevent ingress of moisture and impurities | Guoli Chemical SDS |
| Away from Ignition Sources | Away from heat sources, sparks, and open flames (flash point >180°C closed cup) | Guoli Chemical Product Database |
| Segregation Requirements | Store separately from strong oxidizers, strong acids, strong bases, food, and feed | Guoli Chemical SDS |
| Spill Protection | Set up leak-proof flooring, equipped with trays or dikes | Guoli Chemical SDS |
| Environmental Requirements | Away from drainage systems, surface water, and soil | Guoli Chemical SDS |
| Packaging Specifications | 50kg plastic drum / 200kg plastic drum / IBC tote | Guoli Chemical Product Database |
| Shelf Life | No official value yet, industry practice is 1-2 years (based on COA) | Industry General Reference |
It is recommended to establish a "First In, First Out" inventory management system and regularly check the integrity of packaging drums and labels. For products stored for a long time, it is advised to perform a small-scale test before use, focusing on verifying whether emulsifying power, permeability, and appearance meet the formulation requirements. If a small amount of stratification or slight turbidity is found in the drum (especially under low-temperature conditions), it is usually a normal physical phenomenon; it can be restored by warming to 20-25°C and stirring evenly. There is no need to directly judge it as unqualified.