Лако-красочные материалы — производство

Bismuth vanadate pigments are not acutely toxic either on inhalative or oral incorpo­ration. Animal trials gave some indication of inhalational toxicity, which was probably due to the vanadium content. The “no effect level” for rats is 0.1 mg m-3 (exposure: 3 months, 6 h/day, 5 days/week) [3.114]. Toxic effects are observable only when the concentration in the lungs reaches levels that do not occur under the usual conditions of industrial hygiene. To diminish the associated risk, some manufactures supply bismuth vanadate pigments in a free flowing, low-dusting form, making them inac­cessible to the lungs. Therefore the dust-free pigments can be handled under usual hygienic working conditions.

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