Evaluation of carbon tetrachloride replacement agents for use in testing nonpowered organic vapor chin-style canisters.
Moyer ES; Peterson JA; Calvert C
Appl Occup Environ Hyg 1995 Sep; 10(9):769-775
The results of an evaluation of substitute organic vapor cartridge test agents, to replace the possibly carcinogenic carbon- tetrachloride (56235), for use in evaluations of chin style canisters were reported. Based on a previous study examining replacement agents for nonpowered organic vapor cartridges, four possible replacement agents, ethyl-acetate (141786), pentane (109660), n-hexane (110543), and heptane (142825), were evaluated. These agents were tested on respirator cartridges and compared with results obtained using carbon-tetrachloride at test humidities of 50% and 80% and a temperature of 25 degrees-C. Due to its water solubility, ethyl-acetate was eliminated as a possible replacement agent. Evaluation of initial test data indicated that 4,000 parts per million (ppm) pentane was the best candidate for direct comparison with 5,000ppm carbon-tetrachloride. Comparable breakthrough times were seen for 4,000ppm pentane and 5,000ppm carbon-tetrachloride. Further analyses including a correlation study, linear regression analysis comparison, and a reproducibility study indicated that pentane was a suitable replacement for carbon- tetrachloride for testing of chin style canisters.
NIOSH-Author; Air-purifying-respirators; Organic-solvents; Chemical-cartridge-respirators; Materials-testing; Organic-vapors; Equipment-reliability
Ernest S. Moyer, Centers for Disease Control and Prevention, National institute for Occupational Safety and Health, Division of Safety Research, 1095 Wijowdale Road, Morgantown, West Virginia 26505-2888
56-23-5; 141-78-6; 109-66-0; 110-54-3; 142-82-5
Applied Occupational and Environmental Hygiene