Scientific Review of Phenolpthalein
Status: Listed in the Report on Carcinogens (RoC)
Primary Uses or Exposures: Phenolphthalein in 1% alcoholic solution is used as a visual indicator in titrations of mineral and organic acids and most alkalies. It has also been used as an over-the-counter laxative.
- Appendix A: Excerpt from the NTP Technical Report Toxicology and Carcinogenesis Studies of Phenolphthalein in F344/N Rats and B6C3F1 Mice (Feed Studies), TR-465, pp. 4-38, 71-91, November 1996.
- NTP Board of Scientific Counselors RoC Subcommittee Meeting (October 30–31, 1997)
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