- Author
- Tsuchiya, Y.
- Title
- Dynamic Toxicity Factor.
- Coporate
- National Research Council of Canada, Ottawa
- Journal
- Bulletin of Japanese Association of Fire Science and Engineering, Vol. 28, No. 1, 1-5, 1978
- Report
- CIB W14/79/28 (J)
- Keywords
- toxicity
- Abstract
- The toxicity factor, T, reported earlier was related to the total potential for toxicity production and, as such, does not consider time. Although two materials may show n equal value of the toxicity factor, however, the one that burns faster will create a greater toxicity hazard. In order to measure this difference, the concept of a "dynamic toxicity factor", TD, is proposed based on rate of toxicity production. Toxicity, t, the result of a gaseous compound, has been defined as t=c/cf, where c is the concentration of the gas and cf is the concentration of the same compound that is fatal to man in 30 minutes. When a material burns and produces an atmosphere of toxicity, t, the toxicity, T, of the material has been defined as T=tV/W, where W is the weight of material and V is the volume into which the toxic gas is dispersed. If c is expressed in terms of the partial volume, v, of the toxic gas, then T reduces to v/W/cf. (Abstract in English)