Toluene

CAS RN:108-88-3

Threshold Limit Values

8 Hr Time Weighted Avg (TWA): 20 ppm.

Excursion Limit Recommendation: Excursions in worker exposure levels may exceed 3 times the TLV-TWA for no more than a total of 30 minutes during a work day, and under no circumstances should they exceed 5 times the TLV-TWA, provided that the TLV-TWA is not exceeded.

A4; Not classifiable as a human carcinogen.

Biological Exposure Index (BEI): Determinant: o-Cresol in urine (with hydrolysis); Sampling Time: end of shift; BEI: 0.3 mg/g creatinine. Notations: The determinant may be present in biological specimens collected from subjects who have not been occupationally exposed, at a concentration which could affect interpretation of the result. Such background concentrations are incorporated in the BEI value.

Biological Exposure Index (BEI): Determinant: toluene in urine; Sampling Time: end of shift; BEI: 0.03 mg/L.

Biological Exposure Index (BEI): Determinant: toluene in blood; Sampling Time: prior to last shift of workweek; BEI: 0.02 mg/L.

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