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COMMITTEE RECOMMENDATIONS

EXPOSURE LIMITS

Previous EEL and CEL recommendations made by the Committee (1961 and 1966) for arsine exposure are as follows:

Concentrations, ppm

Duration

1961

1966

1 h

1.0

1.0

8 h

0.05

24 h

0.01

0.1

90 d

0.01

There is little additional information available for revising the 1966 recommendations and additional animal toxicity studies are necessary for the determination of an appropriate CEL. The Committee, thus, recommends that the 1-h and 24-h EELs be 1.0 and 0.1 ppm, respectively; these concentrations agree with the estimates provided by Gates et al. (1946) and Henderson and Haggard (1943). The Committee does not recommend a 90-d CEL because data are insufficient.



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