Forbenzene - substitute xylene. For flammable solvent - substitute less flammable solvent. In addition to being highly toxic, carbon disulfide, carbon tetrachloride and benzene are also absorbed through the skin in sufficient quantities to produce toxic effects independent of inhalation exposures. Most solvents will dissolve the oils from exposed skin. Therefore, the use of organic solvents for hand cleaning is discouraged.
Most solvents have a characteristic odor.
However, this cannot be relied upon to give an adequate warning of hazardous exposures. In many cases the odor threshold is above the threshold of hazardous concentrations for prolonged or repeated exposures. Chlorinated solvents break down to extremely toxic phosgene gas when used in the presence of intense heat or ultraviolet radiation. However, the respirator must be properly fitted and worn. Training for use of respirators will be provided on an as-needed basis.