Notes
EPA Integrated Risk Information System (IRIS) QuickView pages for Antimony (CASRN 7440-36-0) and Arsenic, inorganic (CASRN 7440-38-2), accessed February 14, 2002. Antimony oral RfD is 4×10-4 mg/kg-day based on LOAEL of 0.35 mg/kg-day from Schroeder et al. 1970 rat chronic oral bioassay; confidence rated Low. Arsenic oral RfD is 3×10-4 mg/kg-day based on NOAEL of 0.0008 mg/kg-day from Tseng 1977 human chronic oral exposure study; critical effects include hyperpigmentation, keratosis, and possible vascular complications; carcinogenicity weight of evidence classified as Group A Human Carcinogen per 1986 US EPA Guidelines. Administrative Record numbers AR 033810 and AR 033811.