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| Names | |
|---|---|
| Preferred IUPAC name
Imidazolidine-2-thione | |
| Other names
1,3-Ethylene-2-thiourea, N,N-Ethylenethiourea
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.002.280 |
PubChem CID
|
|
| UNII | |
CompTox Dashboard (EPA)
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|
| |
| |
| Properties | |
| C3H6N2S | |
| Molar mass | 102.16 g·mol−1 |
| Appearance | White solid |
| Odor | Faint, amine-like |
| Melting point | 203 °C (397 °F; 476 K) |
| Boiling point | 347.18 °C (656.92 °F; 620.33 K) |
| 2% (30 °C)[1] | |
| Vapor pressure | 16 mmHg (20 °C)[1] |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards
|
combustible[1] |
| Flash point | 252.2 °C (486.0 °F; 525.3 K) |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
|
1832 mg/kg (oral, rat)[2] |
| NIOSH (US health exposure limits): | |
PEL (Permissible)
|
none[1] |
REL (Recommended)
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Ca Use encapsulated form.[1] |
IDLH (Immediate danger)
|
Ca [N.D.][1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ethylene thiourea (ETU) is an organosulfur compound with the formula C3H6N2S. It is an example of an N,N-disubstituted thiourea. It is a white solid. It is synthesized by treating ethylenediamine with carbon disulfide.[3]
Ethylene thioureas are an excellent accelerant of vulcanization of neoprene rubbers. In commercial use is the N,N'-diphenylethylenethiourea. Due to reproductive toxicity, carcinogenicity, and mutagenicity, alternatives are being sought to the ethylenethioureas. One candidate replacement is N-methyl-2-thiazolidinethione.[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]