Saccharin is a white crystalline powder that is found in diet soft drinks, chewing gum and juice. Saccharin was labeled a potentially cancer-causing substance in the 1980s. In the late 1990s, the National Toxicology Program and the International Agency for Research on Cancer re-evaluated the available scientific information on saccharin and its salts and concluded that it is not a potential human carcinogen. Because the scientific basis for remaining on EPA's lists no longer applies, the agency has removed saccharin and its salts from its lists.
EPA proposed the removal of saccharin and its salts from the lists on April 22, 2010 and did not receive any comments opposing the proposal.
More information is available here.