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Task II. Monochlorobenzene survey report, Monsanto Corporation, W. G. Krumrich Plant, Sauget, Illinois.
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, IWS 100-13, 1977 Jun; :1-37
A walkthrough survey was conducted at Monsanto Corporation (SIC- 2869), a factory where monochlorobenzene (108907) (MCB) was produced. The factory employed 1,300 persons, including 14 workers involved in MCB production. Approximately 47 other chemical compounds were produced at this factory. Preemployment and annual physical examinations were required for all employees. Biological monitoring for phenol (108952) content in urine was performed. Medical assistance was provided by a physician and a full time nurse. Employees involved in the manufacturing process were required to wear overalls, safety shoes, hard hats, and safety glasses. Additional safety equipment was available but not required. 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 walkthrough 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 (71432) and MCB. The author concludes that there is insignificant exposure to MCB, but that the facility requires further investigation. He recommends additional monitoring to determine combined solvent exposure and exposure to nitrochlorobenzene (88733), one of the products derived from MCB.
NIOSH-Author; NIOSH-Survey; Field-Study; Region-5; Chemical-manufacturing-industry; Health-protection; Safety-measures; Exposure-levels; Medical-monitoring; Air-quality-monitoring; Control-methods; Employee-exposure; Industrial-exposures
108-90-7; 108-95-2; 71-43-2; 88-73-3
Field Studies; Industry Wide
NTIS Accession No.
National Institute for Occupational Safety and Health
ME; CA; OH
Stanford Research Institute, Menlo Park, California
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division