||Battelle Columbus Div., Washington, DC. ;Westat, Inc., Rockville, MD. Research Div. ;Midwest Research Inst., Kansas City, MO.;Environmental Protection Agency, Washington, DC. Office of Toxic Substances.
The study was conducted to provide information on the incidence and concentration of six chlorocarbons in common household products. The objectives of the study were to: (1) determine which categories of consumer products contain the chemical methylene chloride and/or five potential substitute solvents (1,1,1-trichloroethane, trichloroethylene, tetrachloroethylene, carbon tetrachloride, and 1,1,2-trichlorotrifluoroethane); and (2) analyze brands representing each product category to determine the concentration of these chemicals in household products. A national sample of household products was selected and laboratory tested to determine the incidence and concentration of the six target chlorocarbons. The following are some of the major findings. Fifty-eight percent of the 67 product categories had at least one brand test positive for one or more of the target analytes. Thirty-four percent of the 1,026 brands tested positive for at least one of the six target chlorocarbons. Thirty-four percent of the brands tested positive for methylene chloride, 14 percent tested positive for 1,1,1-trichloroethane, and less than 4 percent of the brands were positive on any of the remaining four chlorocarbons. The concentration of analyte varied considerably between brands of the same product category. Only 56 percent of the brands with chlorocarbons were so labeled.