[3] Ethylene thioureas are an excellent accelerant of vulcanization of neoprene rubbers.

Due to reproductive toxicity, carcinogenicity, and mutagenicity, alternatives are being sought to the ethylenethioureas.

[4] Ethylene thiourea can be used as a biomarker of exposure to ethylenebisdithiocarbamates (EBDTCs), which are frequently employed as fungicides in agriculture, mainly on fruits, vegetables and ornamental plants.

[5] EPA (United States Environmental Protection Agency) has classified ethylene thiourea as a Group B2, probable human carcinogen.

[6] Ethylene thiourea has been shown to be a potent teratogen (causes birth defects) in rats orally or dermally exposed.