1,3-Dichloropropene, sold under diverse trade names, is an organochlorine compound with the formula C3H4Cl2.
In the US, the Department of Health and Human Services (DHHS) has determined that 1,3-dichloropropene may reasonably be anticipated to be a carcinogen.
In California, the Office of Environmental Health Hazard Assessment has determined that 1,3-dichloropropene is a carcinogen, and in 2022 established a No Significant Risk Level (NSRL) of 3.7 micrograms/day.
[9] The International Agency for Research on Cancer (IARC) has determined that 1,3-dichloropropene is possibly carcinogenic to humans.
[11] Under the brand name Telone, 1,3-D was one of Dow AgroSciences's products until the merger into DowDuPont.