Soluble in organic solvents, oils and alcohol. Pure Lewisite is a colorless oily liquid. Fires involving L should be contained to prevent contamination to uncontrolled areas.
Respiratory protection is required.
Do not breathe fumes. Skin contact with agents must be avoided at all times. Although the fire may destroy most of the agent, care must still be taken to assure the agent or contaminated liquids do not further contaminate other areas or sewers. Contact with the agent liquid or vapor can be fatal. A ceiling value may not be exceeded at any time.