1,1,2,2-Tetrachloroethane

CAS RN:79-34-5

Threshold Limit Values

8 hr Time Weighted Avg (TWA): 1 ppm, skin.
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.
A3; Confirmed animal carcinogen with unknown relevance to humans.
Find more information on this substance at: Hazardous Substances Data Bank , TOXNET , PubMed