Polypropylene glycol PPG-200 (CAS No.: 25322-69-4), as a non-ionic high molecular polymer, requires certain storage specifications to maintain its performance and stability. This product is hygroscopic, so it is essential to keep the container tightly sealed during storage; otherwise, it may absorb moisture from the air, leading to quality degradation.
In terms of chemical compatibility, PPG-200 has high tolerance to acids, alkalis, and hard water environments. However, during storage, contact with strong oxidizers, strong acids, and strong bases should be avoided to prevent potential chemical reactions. At the same time, it should be kept away from fire and heat sources—although its closed-cup flash point exceeds 150°C, making it a relatively safe material, basic fire prevention regulations for chemical storage must still be followed.
Regarding shelf life, Guoli Chemical recommends that the storage period should not exceed 24 months from the date of production. Products beyond this period are not directly discarded, but must be re-inspected to confirm that all indicators are qualified before continued use. This recommendation is based on stability evaluations of the product during long-term storage under recommended conditions.
| Item | Requirement/Parameter |
|---|---|
| Storage Temperature | 5–35°C (cool environment) |
| Environmental Requirements | Dry, well-ventilated |
| Container Status | Keep tightly sealed to prevent moisture absorption |
| Materials to Avoid | Fire sources, heat sources, strong oxidizers, strong acids, strong bases |
| Isolation Storage | Store separately from food and feed |
| Shelf Life | 24 months from date of production (use after re-inspection if expired) |
| Hazard Classification | Non-hazardous, low toxicity |
To ensure optimal performance of the product during use, it is recommended to follow the "first-in, first-out" inventory management principle. For products stored long-term, a visual inspection can be conducted before use—under normal conditions, PPG-200 should be a colorless to slightly yellow transparent viscous liquid. If there are obvious phenomena such as cloudiness, stratification, or color darkening, re-inspection or discontinuation of use should be considered.
Opened products should be used as soon as possible, and containers should be immediately sealed after each sampling to minimize exposure to air. For large packages, it is recommended to dispense into smaller containers for use to reduce the frequency of opening the main container.