USA - Listing Two New Chemicals Under California Proposition 65

​Effective April 21, 2023, the Office of Environmental Health Hazard Assessment is adding 1,1,1-Trichloroethane and Leucomalachite Green​ to the list of chemicals known to the state to cause cancer for purposes of the Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65). 

1,1,1-trichloroethane​ is mainly used as a solvent, degreaser. Manufacture for domestic use banned in US since 2002.

Leucomalachite green is used as a dye precursor to malachite green (Gessner & Mayer, 2000). Other uses of leucomalachite green include as a reagent in several analytical applications, e.g. for the quantitative colorimetric determination of hemoglobin and other hem compounds in forensic science.​​

The warning requirement for significant exposures to these chemicals will take effect on April 21, 2024.