Question

Are emulsifier OS and MS-1 harmful to the human body? Do they have an impact on the environment?

Answer
2026-06-06 官方文档 乳化剂OS,MS-1

Emulsifier OS is hazardous with irritant effects on the human body, while emulsifier MS-1 is classified as a low-risk chemical; both should be prevented from directly entering water bodies and the environment.



Effects on Human Health

Emulsifier OS (Fatty Alcohol Polyoxyethylene Ether)

Emulsifier OS has clear irritant hazards to the human body . According to the GHS classification criteria for chemicals, its hazard categories are Skin corrosion/irritation Category 2 and Serious eye damage/eye irritation Category 2 . Specific manifestations include: H315 Causes skin irritation, H319 Causes serious eye irritation. If accidentally contacted with the skin during operation, it may cause irritation reactions such as redness and itching; if splashed into the eyes, it may lead to severe discomfort and injury. In addition, inhalation of its vapor or mist may also cause respiratory irritation. Therefore, operators must wear chemical safety goggles and protective gloves to avoid direct contact with skin and eyes, and the workplace should maintain good ventilation.

Emulsifier MS-1 (Octylphenol Polyoxyethylene Ether Maleate)

According to current chemical classification standards, emulsifier MS-1 is not classified as hazardous and is a low-risk chemical . Under normal conditions, it has no significant acute toxicity or irritation to the human body. Small amounts ingested are usually harmless, and skin contact generally does not cause severe reactions. Even so, it is still recommended to follow basic chemical hygiene practices during operation, avoid prolonged skin contact, wash hands after operation, and prevent the formation and inhalation of product dust or mist. If discomfort occurs due to high concentration exposure, move the person to fresh air immediately.

Environmental Impact

The main potential environmental impact of both products lies in water pollution . Emulsifier OS and MS-1 are both surfactants. If they enter water bodies in large quantities, they may reduce surface tension, affect the reoxygenation capacity of the water, and cause adverse effects on aquatic organisms (such as fish, algae, etc.). Surfactants may also degrade slowly in the natural environment, placing a certain burden on the water ecosystem in the short term.

According to the emergency handling guidelines in the database: In case of leakage of emulsifier OS, "it should be prevented from entering sewers, surface water, or groundwater systems"; for large spills of emulsifier MS-1, "the product should be prevented from entering waterways". The disposal of both products requires that they must not be directly discharged into the environment and must be handed over to qualified professional waste treatment companies for compliant disposal (such as incineration or landfill), following local and national environmental regulations.

Currently, the database does not provide specific biodegradability data, aquatic toxicity data (such as LC50/EC50 values) or bioaccumulation data for the two products. For detailed environmental risk assessment, it is recommended to consult the complete Safety Data Sheet (SDS) or contact Guoli Chemical Technology Support for supplementary information.

Safe Operation Recommendations
  • Emulsifier OS: Must wear chemical safety goggles, protective gloves, and work clothes during operation; avoid inhaling vapor or mist; maintain good ventilation in the workplace, use explosion-proof ventilation systems.
  • Emulsifier MS-1: Although a low-risk product, it is still recommended to maintain good ventilation, wash hands after operation, and avoid prolonged skin contact.
  • Common to both: Strictly prohibit discharging waste liquid directly into sewers or natural water bodies; collect leaks with inert absorbent materials and seal for disposal; waste treatment must be entrusted to qualified professional institutions, following the "first in, first out" inventory principle to avoid product expiration.

Notes

The above information is based on the safety instructions provided by the Guoli Chemical product database. For emulsifier OS, special caution is needed regarding its severe eye irritation—if splashed into the eyes, immediately open the eyelids and rinse with plenty of running water for at least 15 minutes, and seek medical attention immediately. Both products may produce irritating or toxic gases when heated and decomposed in a fire; firefighters must wear self-contained positive pressure breathing apparatus. For complete toxicological data, ecotoxicological data, and detailed SDS, please contact the Technical Support Department of Haian Guoli Chemical Co., Ltd.