The storage management of PEG400DL (Polyethylene Glycol Dilaurate) directly affects its performance and product life. According to the safety instructions of Guoli Chemical, this product should be stored in a cool, dry, and well-ventilated warehouse, with the recommended storage temperature strictly controlled between 5°C and 40°C. Special attention is required: under low-temperature conditions, the product may appear cloudy or solidified, which is a normal physical state change and does not affect product quality or chemical performance at all—simply bring the product to room temperature and stir slowly until uniform, then it can be used normally.
Container management is a key point in the storage process. PEG400DL should be stored in original sealed packaging or confirmed compatible material containers (such as stainless steel, high-density polyethylene). After each use, the container must be immediately tightened to prevent moisture absorption or contamination. The warehouse should be kept away from strong oxidizers, strong bases, strong acids, and other incompatible substances, and avoid contact with open flames and high-temperature surfaces (the flash point of this product is >250°C; although it is a high-flash-point material, the risk of decomposition at high temperatures still needs to be guarded against).
Regarding the shelf life issue: The product database you consulted does not yet include the specific official nominal shelf life value for PEG400DL. However, from the chemical nature of the product, PEG400DL is a saturated fatty acid ester nonionic surfactant with a stable molecular structure. Under sealed and light-protected conditions at 5~40°C, it is not prone to hydrolysis or oxidative deterioration, and its actual shelf life is relatively long. As a general industry recommendation, it is advised to use it preferentially within 12 months of receipt; if storage exceeds this period, it is recommended to re-test the appearance, pH value (1% aqueous solution should be 5.0~7.0), and acid value (≤1.0 mgKOH/g) before use, and the product can still be used after confirming no abnormalities.
| Parameter | Value |
|---|---|
| Recommended Storage Temperature | 5°C ~ 40°C |
| Low-temperature Phenomenon | Cloudiness or solidification (normal, reversible) |
| Recommended Container Material | Stainless steel, High-density polyethylene (HDPE) |
| Flash Point (Closed Cup) | >250°C |
| Hygroscopicity | Hygroscopic, must be stored sealed |
| Chemical Stability | Stable under normal conditions, avoid strong acids and bases |
| Incompatible Materials | Strong oxidizers, strong bases, strong acids |
Whether you use PEG400DL in cosmetic formulations, industrial cleaners, or pesticide formulations, check the product appearance before use: the normal product should be a light yellow transparent to slightly cloudy liquid. If the product solidifies after low-temperature transportation or winter storage, do not directly heat it or use an open flame. The correct method is to place the sealed container in an environment at 20~30°C to naturally warm up for 12~24 hours; after it regains fluidity, stir slowly until uniform and then use.