Determination of Noncancer Chronic Reference Exposure Levels Batch 1B Final April 2000 CHRONIC TOXICITY SUMMARY CHLOROFORM (trichloromethane; formyl trichloride; methenyl trichloride; methyl trichloride) CAS Registry Number: 67-66-3 I. Chronic Toxicity Summary Inhalation
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چکیده
Chloroform (CHCl3) is used in industry and laboratory settings as a solvent for adhesives, pesticides, fats, oils and rubbers. It is also used as a chemical intermediate in the synthesis of fluorocarbon 22, dyes, pesticides, and tribromomethane. Chloroform is produced as a byproduct of water, sewage, and wood pulp chlorination (HSDB, 1995). In 1996, the latest year tabulated, the statewide mean outdoor monitored concentration of chloroform was approximately 0.037 ppb (CARB 1999a). The annual statewide industrial emissions from facilities reporting under the Air Toxics Hot Spots Act in California based on the most recent inventory were estimated to be 79,949 pounds of chloroform (CARB 1999b).
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