Synonyms & Trade Names1,3-Ethylene-2-thiourea, N,N-Ethylenethiourea, ETU, 2-Imidazolidine-2-thione
DOT ID & Guide
See: IDLH INDEX
NIOSH RELCa Use encapsulated form. See Appendix A
Physical DescriptionWhite to pale-green, crystalline solid with a faint, amine odor. [Note: Used as an accelerator in the curing of polychloroprene & other elastomers.]
Vapor Pressure16 mmHg
Ionization Potential8.15 eV
Upper Exposive Limit?
Lower Explosive Limit?
Incompatibilities & ReactivitiesAcrolein
Exposure Routesinhalation, ingestion, skin and/or eye contact
Symptomsirritation eyes; In Animals: thickening of the skin; goiter; teratogenic effects; [potential occupational carcinogen]
Target OrgansEyes, skin, thyroid, reproductive system
Cancer Site[in animals: liver, thyroid & lymphatic sys tumors]
Personal Protection/Sanitation(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated/Daily
Remove:When wet or contaminated
First Aid(See procedures)
Skin:Soap wash immediately
Swallow:Medical attention immediately
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division