G-18 glycerol polyoxyethylene ether (polyoxyethyl glycerol ether) is a non-ionic surfactant with relatively stable chemical properties. It can be used normally within the pH range of 3~12 and has excellent water solubility. However, its core risk lies in irritation to human skin and eyes. According to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), this product is classified as skin irritation category 2 (H315) and serious eye irritation category 2A (H319). This means that direct contact may cause skin redness, itching, or eye pain, tearing, and other discomfort. Therefore, all operations must be carried out in well-ventilated areas, and it is mandatory to wear protective gloves and goggles.
In storage, this product has strong hygroscopicity. It is necessary to ensure that the packaging container is tightly sealed and stored in a cool (recommended 5~30°C), dry, and well-ventilated dedicated warehouse. It should be strictly kept away from heat sources, sparks, and stored separately from incompatible substances such as strong oxidizers, strong acids, and strong alkalis, as the product may decompose under these harsh conditions. Empty containers may contain hazardous residues and should not be disposed of without thorough cleaning.
The following are the key safety and physicochemical parameters of G-18 glycerol polyoxyethylene ether (data source: Guoli Chemical Product Database):
| Parameter | Value/Description |
|---|---|
| Appearance | Colorless to light yellow transparent liquid |
| pH value (1% aqueous solution) | 5.0~7.0 |
| Chemical stability | Stable within pH 3~12, unstable under strong acids, bases, and oxidants |
| Flash point | >150°C (not flammable, but thermal decomposition may produce irritating gases) |
| Hygroscopicity | Hygroscopic |
| HLB value | 18 |
| Storage temperature | Recommended 5~30°C |
| GHS classification | Skin corrosion/irritation category 2 (H315); Serious eye damage/eye irritation category 2A (H319) |
Personal Protection: Before operation, chemical protective gloves, safety goggles/face shields, and protective clothing must be worn. After operation, hands and any exposed skin should be thoroughly washed with soap and water immediately. Eating, drinking, or smoking is strictly prohibited in the workplace to prevent accidental ingestion.
Formulation Stability: Since the product may be unstable under strong acid, strong alkali, or strong oxidant environments, the pH of the system should be controlled within the ideal range of 3~12 during formulation design. At the same time, due to its strong hygroscopicity, the container should be sealed immediately after opening to prevent the product from absorbing moisture in the air, which could cause parameter changes or microbial growth.
Spill Disposal: In case of a spill, immediately evacuate unrelated personnel and wear protective equipment. Cover and collect the spilled liquid with inert absorbent materials (e.g., dry sand, vermiculite), place it in a closed container, and dispose of as hazardous waste. Be sure to prevent the spill from entering drains, water bodies, or soil to avoid environmental pollution.