The storage conditions of polypropylene glycol PPG-600 directly affect the quality stability and performance of the product. This product has low volatility, a high flash point (>200°C closed cup), and good chemical stability, making it less prone to deterioration under normal storage conditions. However, due to the presence of ether bonds and terminal hydroxyl groups in its molecular structure, prolonged exposure to high temperatures, humidity, or strong oxidizing environments may cause slow oxidation or moisture absorption, thereby affecting product quality.
In terms of temperature control, it is recommended to maintain the storage temperature between 5°C and 40°C, avoiding extreme temperatures and large temperature fluctuations. Special attention should be paid to the fact that PPG-600 may exhibit a significant increase in viscosity or even solidification at low temperatures—this is a physical property of polyether products and is not a sign of deterioration. If low-temperature solidification occurs, simply warm the product to room temperature and stir thoroughly before use to restore normal performance without any substantial impact on product quality.
The choice of packaging container is equally critical. It is recommended to use containers made of stainless steel, carbon steel, or polypropylene (PP) for storage, as these three materials have good chemical compatibility with PPG-600 and will not undergo corrosion or leaching reactions. Containers must be promptly sealed after use to prevent the product from absorbing moisture from the air or being contaminated by external substances.
| Storage Element | Specific Requirement |
|---|---|
| Environmental Requirement | Cool, dry, well-ventilated dedicated warehouse or area |
| Recommended Temperature | 5°C to 40°C |
| Packaging Material | Stainless steel, carbon steel, or polypropylene containers |
| Sealing Requirement | Keep containers tightly sealed to prevent moisture absorption and contamination |
| Incompatible Substances | Strong oxidizers (e.g., peroxides, perchlorates, nitric acid), strong acids |
| Other Requirements | Keep away from fire, heat sources, and direct sunlight; equip spill containment facilities (e.g., trays or berms) |
| Special Prohibitions | Do not store in the same warehouse with food, beverages, or feed |
For users storing in winter or cold regions, it is recommended to equip the warehouse with basic insulation or heating facilities. When the product becomes viscous or solidified due to low temperature, gradual warming (avoiding local overheating) can be achieved through water bath heating or room temperature conditioning, followed by stirring to a uniform state before normal feeding and use. Do not directly heat the container with an open flame.
For bulk storage users, it is recommended to establish a first-in-first-out (FIFO) inventory management system, regularly inspect container seals, and ensure the product maintains optimal quality within its effective storage period. Additionally, spill containment trays or berms should be installed in the storage area to deal with accidental leaks.