Monochlorobenzene Survey Report, Monsanto Corporation, W. G. Krumrich Plant, Sauget, Illinois. April 6-7, 1977

摘要

Monsanto Corp., a factory where monochlorobenzene (MCB) was produced. The factory employed 1,300 persons, including 14 workers involved in MCB production. The factory produced over 100,000,000 pounds of MCB in a year. The MCB process equipment was outdoors, and no ventilation system was noted. Equipment consisted of a 10-year-old closed system. During most of the operation, the workers remained indoors in a control room block house located in the middle of the MCB production facility. A portable, total organic vapor analyzer was used to sample vapor concentrations on the walk-through survey. Less than 3 parts per million (ppm) total hydrocarbons, calibrated as MCB were detected. Charcoal tube air samples were also collected for 4.5 hours in the MCB area. They were in the 1 to 2ppm range for benzene and MCB. The author concludes that there is insignificant exposure to MCB, but that the facility requires further investigation. The author recommends additional monitoring to determine combined solvent exposure and exposure to nitrochlorobenzene, one of the products derived from MCB.