[Substantiation of maximum allowable concentration of TZ-85 in workplace air in agriculture].

The plant growth stimulant TZ-85 is a native preparation. Its LD50 are as follows: 780, 5000, and 2500 mg/kg for albino mice, albino rats, and rabbits, respectively. The cumulative coefficient of the agent is more than 3; Limac is 235 mg/kg, Limch is 10 mg/kg. Its MAC for the air of a working area is 3 mg/kg.