Ethylene thiourea

Ethylene thiourea Basic information
Product Name:Ethylene thiourea
Synonyms:1,3-ethylene-2-thio-ure;1,3-Ethylene-2-thiourea;2H-Imidazole-2-thione, tetrahydro-;2-imadazoline-2-thiol;2-Imidazolidinethione ethylene thiourea;2-Imidazoline-2-thiol;2-Imidozolidimethione;2-Mercapto-2-imidazoline
CAS:96-45-7
MF:C3H6N2S
MW:102.16
EINECS:202-506-9
Product Categories:Organics;rubber additive;rubber auxiliary;rubber vulcanizing accelerator;chlorinated polyethylene (CPE) rubber vulcanizing accelerator agent;elastomer accelerator;Peroxidase Inhibitors;and Substrates;Biochemicals and Reagents;Building Blocks;Chemical Synthesis;Enzyme Inhibitors;Enzyme Inhibitors by Enzyme;Enzymes;Inhibitors;Organic Building Blocks;P to Q;Sulfur Compounds;Thioureas;bc0001;96-45-7
Mol File:96-45-7.mol
Ethylene thiourea Structure
Ethylene thiourea Chemical Properties
Melting point 196-200 °C(lit.)
density 1.41~1.45
vapor pressure <1 hPa (25 °C)
refractive index 1.5500 (estimate)
Fp 252 °C
storage temp. Store below +30°C.
solubility 8g/l
pka15.01±0.20(Predicted)
form Powder
color White
Odorwh. to pale green crystals, faint amine odor
Water Solubility 19 g/L (20 ºC)
Merck 14,3803
Boiling point 240°C (1010 hPa)
BRN 106275
InChIKeyPDQAZBWRQCGBEV-UHFFFAOYSA-N
LogP-0.67 at 20℃
CAS DataBase Reference96-45-7(CAS DataBase Reference)
IARC3 (Vol. Sup 7, 79) 2001
NIST Chemistry Reference2-Imidazolidinethione(96-45-7)
EPA Substance Registry SystemEthylene thiourea (96-45-7)
Safety Information
Hazard Codes T
Risk Statements 61-22-48/23/25-40
Safety Statements 53-45
RIDADR 2811
WGK Germany 2
RTECS NI9625000
HazardClass 6.1(b)
PackingGroup III
HS Code 29332990
Hazardous Substances Data96-45-7(Hazardous Substances Data)
ToxicityLD50 orally in rats: 1832 mg/kg (Graham, Hansen)
MSDS Information
ProviderLanguage
1,3-Ethylenethiourea English
SigmaAldrich English
ACROS English
Ethylene thiourea Usage And Synthesis
DescriptionEthylenethiourea, a thiourea derivative, is a rubber chemical. It has caused contact dermatitis mainly in rubber workers.
Chemical PropertiesEthylene thiourea is a white to light green, needle-like crystalline solid with a faint amine odor. It is very soluble in hot water;slightly soluble in cold water, methanol, ethanol, ethylene glycol, pyridine, acetic acid, and naphtha; and insoluble in acetone, ether, chloroform, and benzene.When heated to decomposition, ethylene thiourea emits toxic fumes of nitrogen oxides (NOx) and sulfur oxides (SOx).
Ethylene thiourea
Ethylene thiourea is available in the United States as crystals, as a powder, as an 80% dispersion of the powder in oil, or encapsulated in a matrix of compatible elastomers.

UsesAccelerator in the curing of polychloroprene (neoprene) and polyacrylate rubber; intermediate in the manufacture of antioxidants, insecticides, fungicides, dyes, pharmaceuticals, and synthetic resins
Useselastomer accelerator;chlorinated polyethylene (CPE) rubber vulcanizing accelerator agent.
Ethylene thiourea is used primarily as an accelerator for vulcanizing polychloroprene (Neoprene®) and polyacrylate rubbers. Neoprene rubbers are used almost exclusively in industrial applications,e.g.. for mechanical and automotive products, in wire and cable production, in construction,and in adhesives. Polyacrylate rubbers are used in products such as seals, o-rings, and gaskets for automotive and aircraft applications. Ethylene thiourea is used in the manufacture of ethylene-bisdithiocarbamate pesticides, such as Maneb®, Mancozeb®, Metiram®,and Zineb®.Ethylene thiourea is also used in electroplating baths, as an intermediate in antioxidant production, in dyes, pharmaceuticals,and synthetic resins. However, there is no evidence that the compound is used commercially for any of these purposes (IARC V.7, 1974; Sax, 1987).
Uses2-Imidazolidinethione is a pesticide used in production of fruits and vegetables. It is also used as a new contrast agent for MRI studies based on proton chemical exchange dependent saturation transfe r. 2-Imidazolidinethione is also a corrosion inhibitor due to the adsorption of the mol. species.
DefinitionChEBI: Ethylenethiourea is a member of imidazolidines.
General DescriptionWhite to pale green crystals or an off-white solid. Odorless when pure, but technical product may have an amine odor.
Air & Water ReactionsSlightly soluble in water.
Reactivity ProfileEthlenethiourea may be sensitive to prolonged exposure to light. Incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. May react with acids to liberate hydrogen sulfide.
HazardQuestionable carcinogen.
Health HazardEthylene thiourea (ETU) is an antithyroid substance and animal carcinogen.
Fire HazardEthylene thiourea is combustible.
Flammability and ExplosibilityNonflammable
Contact allergensEthylene thiourea, a thiourea derivative, is a rubber chemical. It caused contact dermatitis mainly in rubber workers.
Potential ExposureEthylene thiourea is used extensively as an accelerator in the curing of polychloroprene (Neoprene) and other elastomers; as a vulcanizing accelerator in rubber processing; in electroplating baths. In addition, exposure to ethylene thiourea also results from the very widely used ethylene bisdithiocarbamate fungicides. Ethylene thiourea may be present as a contaminant in the ethylene bisdithiocarbamate fungicides and can also be formed when food containing the fungicides is cooked
CarcinogenicityEthylene thiourea is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals.
ShippingUN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required
Purification MethodsCrystallise it from EtOH or amyl alcohol. [Beilstein 24 III/IV 22.]
IncompatibilitiesIncompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, acid anhydrides, and acrolein
Waste DisposalIncineration in a furnace equipped with afterburner and scrubber.
N-Aminothiourea ETHYLENE N,N'-Diethylthiourea Diethylenetriamine 2-Mercaptobenzothiazole Allylthiourea Adhesion promoter 1-Hydroxyethylidene-1,1-diphosphonic acid Hydrazodicarbothioamide ETHYLTHIOUREA 1-PHENYL-2-THIOUREA 2,2'-Dithiobis(benzothiazole) 4,4'-Methylenedianiline Ethylene thiourea N-NITROSODIETHYLAMINE Tetramethylthiuram Disulfide 1,4,7,10,13-Pentaazatridecane Thiourea

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