CAS RN: 7784-42-1

Threshold Limit Values

8 hr Time Weighted Avg (TWA) 0.005 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.
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