Question

Are G-18 glycerol polyoxyethylene ether and polyoxyethyl glycerol ether harmful to the human body? Do they have an impact on the environment?

Answer

G-18 glycerol polyoxyethylene ether has low toxicity under normal use conditions, but direct contact can cause skin and eye irritation; its environmental impact is mainly physical pollution, and it should be prevented from entering water bodies.

Effects on Human Health

According to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), the main health hazard of this product is concentrated on direct contact irritation. It is not classified as a highly toxic or carcinogenic substance, and its long history of use in cosmetics and personal care products indicates that it is safe as a mild nonionic surfactant in formulations. However, strict protection is required when directly contacting the pure substance or high-concentration solutions.

Specific classification: Skin corrosion/irritation (Category 2, H315 Causes skin irritation); Serious eye damage/eye irritation (Category 2A, H319 Causes serious eye irritation). This means that if improperly handled, the stock solution splashed on the skin may cause erythema or discomfort, and splashed into the eyes may cause obvious stinging and conjunctival damage.

Inhalation risk is relatively low because the product is a viscous liquid at room temperature with low vapor pressure; however, when heated to decompose or forming aerosols/mists, inhalation may cause respiratory discomfort. Ingestion can cause gastrointestinal irritation, do not induce vomiting.

Impact on the Environment

G-18 glycerol polyoxyethylene ether (polyoxyethyl glycerol ether) is mainly eliminated in the environment through biodegradation. Its molecular main chain is a carbon-oxygen structure and does not have obvious bioaccumulation. However, as a surfactant, if a large amount is discharged into water bodies in a short time, it will reduce the surface tension of water, affect the respiration and osmotic regulation of aquatic organisms, and exert pressure on the ecological balance of aquatic microbial communities.

The product database clearly requires: In case of leakage, use inert absorbent materials (such as sand and soil) to absorb and collect, dispose of as hazardous waste, and prohibit discharge into drainage systems, water bodies, or soil. This indicates that although the environmental toxicity of a single product is not high, it is still necessary to control its pathway into the environment to avoid cumulative effects and aquatic ecological risks caused by excessive local concentrations.

Subject to management regulations, enterprises using this product need to pretreat wastewater containing this component to ensure that the surfactant concentration limits required by local environmental protection departments are met before discharge.

Safe Use and Disposal Guidelines

Operational Protection

  • Must wear chemical protective gloves, goggles or face shield, and protective clothing.
  • Keep the workplace ventilated, avoid eating and smoking, and thoroughly wash exposed skin after work.

First Aid Measures

  • Eye contact: Immediately rinse with plenty of water for at least 15 minutes, lift eyelids, and seek medical attention as soon as possible.
  • Skin contact: Remove contaminated clothing and wash with plenty of soap and water. If irritation persists, seek medical attention.
  • Ingestion: Do not induce vomiting, rinse mouth, drink plenty of water, and seek medical attention immediately.

Environmental Disposal

  • Absorb spilled material with sand, soil, or vermiculite, collect in a sealed container, and dispose of as hazardous waste.
  • Do not flush into sewers or surface waters.
  • Empty containers should not be disposed of casually without thorough cleaning. It is recommended to hand them over to qualified waste treatment enterprises for incineration or safe landfill.