Molybdenum disulfide (MoS₂) is generally considered non-toxic under normal industrial use and is not classified as a hazardous substance by OSHA, REACH, or GHS when used in solid or coated form. It is widely used as a dry film lubricant in aerospace, automotive, and manufacturing applications.
However, fine MoS₂ powders can pose inhalation risks if airborne, especially during machining, grinding, or thermal degradation. Prolonged exposure may cause respiratory irritation. As with all industrial materials, it should be handled using standard safety precautions:
- Use local exhaust ventilation when handling powders.
- Avoid inhalation and prolonged skin contact.
- Follow the product’s Material Safety Data Sheet (MSDS) for specific handling and PPE guidelines.
When properly handled, MoS₂ is considered safe and effective for most industrial applications.