[Hygienic rationale maximum allowable concentrations of 1,2,4-triazole in atmospheric air].

Toxicological study of the 1,2,4-triazole determined the maximum one-time MAC of it in the ambient air at level of 0,1 mg/m3, average daily MAC of it - 0,05 mg/m3.

[Substantiation of maximum allowable concentration of p-chlorophenol in the ambient air of settlements].

A complex toxicological study of the p-chlorophenol was carried out. Single permissible p-chlorophenol MAC in the ambient air at level 0.015 mg/m3, and daily average one 0.

[Toxicological characteristics of sebacic acid and the substantiation of its maximum permissible exposure level in atmospheric air].

Average daily MAC of the sebacic acid in the ambient air established at the level of 0.05 mg/m3 (3-d class of hazard). Data of acute and chronic experiments were noted.