Polyether L-45 should be stored sealed in a cool, dry, well-ventilated warehouse, with temperature strictly controlled between 5–35°C; the shelf life is not explicitly marked in the database, but under proper storage conditions, the industry typically recommends 12 months.
Detailed Description
Polyether L-45 is a polyoxyethylene-polyoxypropylene block copolymer (poloxamer type nonionic surfactant). It appears as a colorless to slightly yellow transparent liquid at room temperature, with a flash point greater than 200°C and relatively stable chemical properties. However, under improper storage conditions, quality may degrade due to moisture absorption, oxidation, or high temperature. The core principles for storage are sealing, protection from light, low temperature, and isolation from incompatible substances.
Regarding the shelf life, the Guoli Chemical product database does not specify a precise shelf life for this product. Based on general industry standards and experience with similar nonionic surfactant products, under strict adherence to storage conditions (5–35°C, sealed, protected from light), the recommended usage period from the date of manufacture is 12 months. For products beyond this period, it is recommended to recheck key indicators (such as hydroxyl value, acid value, moisture content, and cloud point) before use, and if qualified, they may still be used.
Technical Parameters (Storage Related)
| Parameter | Data | Data Source |
|---|
| Recommended Storage Temperature | 5–35°C | Guoli Chemical Product Safety Instructions |
| Appearance | Colorless to slightly yellow transparent liquid | Guoli Chemical Product Description |
| Flash Point | >200°C | Guoli Chemical Product Database |
| Freezing Point | < -20°C | Guoli Chemical Product Database |
| Effective Content | ≥99% | Guoli Chemical Product Database |
| Moisture Content | ≤0.5% | Guoli Chemical Product Database |
| Hygroscopicity | Hygroscopic | Guoli Chemical Product Database |
| Packaging Specifications | 50kg plastic drum, 200kg plastic drum, IBC tote | Guoli Chemical Product Database |
Storage Operation Points
- Container Sealing: After use, immediately tighten the drum lid to prevent prolonged exposure to air and moisture absorption or oxidation (the product is hygroscopic, with出厂标准 moisture content ≤0.5%).
- Away from Heat Sources: Storage area should be away from heat, sparks, open flames, and other ignition sources; although the flash point is greater than 200°C, fire prevention measures are still necessary.
- Isolation from Incompatible Substances: Avoid contact or mixed storage with strong oxidizers, strong acids, strong bases, etc., to prevent chemical reactions that may cause product deterioration.
- Anti-static Measures: Storage and transfer equipment should be grounded and equipotentially bonded to prevent electrostatic accumulation and fire risk.
- First-In-First-Out Principle: Warehouse management should follow the "first-in-first-out" principle, prioritizing the use of earlier production batches to avoid prolonged storage beyond the recommended period.
Precautions
- This product contains hazard statements H315 (causes skin irritation), H319 (causes serious eye irritation), H335 (may cause respiratory irritation). Wear protective gloves and goggles during handling and use.
- Avoid drastic temperature fluctuations or freezing during storage; although the freezing point is below -20°C, repeated freeze-thaw cycles may affect product uniformity and performance.
- The storage area should have clear safety signs and spill collection facilities, and be equipped with emergency response tools (such as inert absorbent materials) to handle accidental leaks.
- The above shelf life recommendation is a general industry experience value. For specific use, it is advisable to rely on actual product test indicators. If in doubt, contact Guoli Chemical technical support for batch quality confirmation.
