HASKELL LABORATORY LEAD CHROMATE Cr03 The OSHA standard for working exposure is 100 yg/m^ as TOXICITY Lead chromate is practically nontoxic on single exposure by the oral and inhalation routes (oral ALD > 5000 mg/kg in rats; inhala tion of 34 mg/1/6 hr., no deaths) (1)* Repeated or prolonged overexposure to the dusts can cause lead poisoning. c ar c in o g en ic it y A recent epidemiological study has shown that prolonged excessive inhalation of lead chromate pigment dust may produce lung cancer in humans (2).

< ' population groups in the sample would lead to lower blood-lead values near V the end of the survey.

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f / V r \ i , XHWTES 47TH Miwm MEETIMG LEAD INDUSTRIES ASSOCIATION, IMC.

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September 21, 1970 D.

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March 14, 1972 Mr.

WTTOMC DEC 271972 3< T.

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