Thickener 6000DS (PEG-150 distearate, powder form) and thickener 638 (PEG-150 distearate, liquid form) from Guoli Chemical are both nonionic polymer surfactants. According to the product safety data sheet, this product is non-toxic and non-flammable, and is safe and reliable for humans and the environment under normal usage conditions. Its chemical structure is an ester of polyethylene glycol and stearic acid, with high molecular weight and low biological activity, and it does not fall under the classification of hazardous chemicals.
Toxicological data indicates that this product has low acute oral toxicity and shows no significant irritation to the skin or eyes. However, it should be noted that when handling the powder form (thickener 6000DS), if a large amount of fine dust is generated, inhalation may cause coughing or respiratory discomfort. Direct contact with the liquid form (thickener 638) may cause mild skin reactions in sensitive individuals. Therefore, it is recommended to wear dust masks, safety goggles, and protective gloves during operation, and to maintain good ventilation in the work area.
Regarding the environment, PEG-150 distearate has certain biodegradability and does not pose significant harm to aquatic ecosystems at normal usage concentrations. However, it is important that waste liquids or spilled materials containing this product should not be directly discharged into sewers, surface water, or groundwater to avoid localized high concentrations that could burden the aquatic environment. Waste materials should be collected according to local regulations and disposed of by qualified agencies.
| Safety Indicator | Assessment Conclusion |
|---|---|
| Acute Toxicity (Oral) | Low toxicity, no significant acute hazard |
| Skin Irritation | Slight or no irritation |
| Eye Irritation | Slightly irritating, rinse after contact |
| Flammability | Non-flammable, but dust clouds may pose a combustion risk near open flames |
| Environmental Persistence | Certain biodegradability, non-persistent pollutant |
| Bioaccumulation | High molecular weight, low risk of bioaccumulation |
| Hazard Classification | Not classified as hazardous chemical |
In application, thickener 6000DS and 638 are widely used in personal care products such as shampoos, body washes, creams, and lotions, as well as in industrial products like water-based coatings and adhesives. The addition level of thickeners in these end products is typically 0.5% to 3%. After thorough dilution and formulation, the risk of contact with human skin and mucous membranes is extremely low.