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HHE determination report no. HHE-79-8-584, Stauffer Chemical Company, Silver Bow, Montana.
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HHE 79-8-584, 1979 Apr; :1-14
Environmental evaluations were conducted on December 19 to 21, 1978, at the Stauffer Chemical Company (SIC-5161) in Silver Bow, Montana in response to a request from Teamsters Local Number 2 in Butte, Montana, to determine potential toxic exposures associated with the processing of ore and the production of elemental-phosphorus (7723140) (P4) among 75 to 80 workers. Breathing zone and general room air samples were analyzed for phosphorus-pentoxide (1314563) (P2O5), elemental-phosphorus, crystalline-silica (7631869), total particulate, fluoride, and vanadium-pentoxide (1314621). Concentrations of P2O5 ranged from 1.7 to 9.2 milligrams per cubic meter (mg/cu m). No OSHA criteria currently exists for this compound. In 3 out of 4 respirable crystalline-silica samples, concentrations ranging from 0.09 to 0.183mg/cu m exceeded the OSHA standard of 10mg/cu m divided by the percent of respirable quartz (14808607) plus 2. All other samples were within the most recent evaluation criteria. The author concludes that a potential health hazard from excessive airborne concentrations of P2O5 and respirable crystalline-silica existed and recommends maintaining the current respirator program, insuring proper fit of respirators, briefing workers on potential hazards, and improving local and general ventilation.
NIOSH-Author; HHE-79-8-584; NIOSH-Health-Hazard-Evaluation; Region-8; Chemical-industry; Hazard-Confirmed; Chemical-workers; Air-monitoring; Chemical-exposure; Environmental-contaminants; Industrial-hazards; Personal-protective-equipment; Control-measures; Unions; Author Keywords: phosphorus pentoxide; P2O5; elemental phosphorus; P4; yellow phosphorus; crystalline silica; total particulate; fluoride; vanadium pentoxide; V2O5
7723-14-0; 1314-56-3; 7631-86-9; 1314-62-1; 14808-60-7
Field Studies; Health Hazard Evaluation
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division