Description

Ethylenethiourea (CAS No. 96-45-7) is a heterocyclic organic compound with the molecular formula C₃H₆N₂S and the IUPAC name imidazolidine-2-thione. This white to pale yellow crystalline solid is widely utilized in industrial and research applications due to its role as an accelerator in rubber vulcanization processes. Ethylenethiourea exhibits excellent thermal stability and solubility in polar solvents, making it a valuable intermediate in chemical synthesis. High-purity grades (≥98%) are available for laboratory use, ensuring consistent performance in sensitive applications. Proper handling precautions are recommended, as it is classified as a potential thyroid disruptor.

Properties

• CAS Number: 96-45-7
• Complexity: 63.2
• IUPAC Name: imidazolidine-2-thione
• InChI: InChI=1S/C3H6N2S/c6-3-4-1-2-5-3/h1-2H2,(H2,4,5,6)
• InChI Key: PDQAZBWRQCGBEV-UHFFFAOYSA-N
• LogP: log Kow = -0.66
• Exact Mass: 102.02516937
• Molecular Formula: C3H6N2S
• Molecular Weight: 102.16
• SMILES: C1CNC(=S)N1
• Topological: 56.2
• Monoisotopic Mass: 102.02516937
• Physical Description: Ethylene thiourea appears as white to pale green crystals or an off-white solid. Odorless when pure, but technical product may have an amine odor.
• Color/Form: Needles, prisms from alcohol or amyl alcohol
• Odor: Faint, amine odor
• Boiling Point: 446 to 595 °F at 760 mmHg
• Melting Point: 397 to 399 °F
• Flash Point: 486 °F
• Solubility: >15.3 [ug/mL]
• Density: Density : 1,26-1,28 g/cm³
• Vapor Pressure: less than 1 mmHg at 68 °F
• Ionization Potential: 8.15 eV
• Odor Threshold: Odorless
• Synonyms: imidazolidine-2-thione, 2-Imidazolidinethione, Ethylenethiourea, 96-45-7, ETHYLENE THIOUREA, 2-Mercaptoimidazoline, Aperochem ETU-22, l’Ethylene thiouree, 2-Imidazolidimethione, CCRIS 298, l’Ethylene thiouree [French], HSDB 1643, Perkacit ETU, 4,5-dihydro-1H-imidazole-2-thiol, EINECS 202-506-9, UNII-24FOJ4N18S, 2-Imidozolidimethione, 2-Thionoimidazolidine, DTXSID5020601, AI3-16292, Akroform ETU-22 PM, DTXCID90601, ETHYLENE THIOUREA [MI], ETHYLENETHIOUREA [IARC], ETHYLENE THIOUREA [HSDB], EC 202-506-9, NA 22, 2H-Imidazole-2-thione, tetrahydro-, 5328-35-8, 1H-IMIDAZOLE-2-THIOL, 4,5-DIHYDRO-, l’Ethylene thiouree (French), ETHYLENETHIOUREA (IARC), imidizolidenethione, 2 Mercaptoimidazoline, 2-Imidazolidine-2-thione, Etilentiourea, Imidazoline2thiol, Akrochem etu22, 2Imidazoline2thiol, 2Merkaptoimidazolin, Aperochem ETU22, 2imidazolidinethione, 2mercaptoimidazoline, Rodanin S62, 1,3Ethylenethiourea, 2-Thionomidazolidine, Rhodanin S-62, N,N’Ethylenethiourea, 2Mercapto2imidazoline, 1,3Ethylene2thiourea, 2Thioldihydroglyoxaline, N,N-Ethylene-thiourea, Imidazoline, 2mercapto, 2-imadazoline-2-thiol, 2-Thioldihydroglyoxaline, Etilentiourea (Spanish), Imidazoline2(3H)thione, SANCELER 22C, Urea, 1,3ethylene2thio, SANCELER 22, Rhodanin S-62 (Czech), ACCEL 22S, RODANIN S 62, ACCEL 22, Tetrahydro2Himidazole2thione, NA22D, 4,5Dihydro2mercaptoimidazole, Sodium22 neoprene accelerator, N,N’-1,2-ethanediylthiourea, END 75, 4,5Dihydroimidazole2(3H)thione, Thiourea, N,N'(1,2ethanediyl), Imidazole2(3H)thione, 4,5dihydro, 4,5-Dihydroimidazol-2(3h)-thione, USEPA/OPP Pesticide Code: 600016, THIOUREA, N,N’-1,2-ETHANEDIYL-, 2-Mercaptoimidazoline, 2-Imidazolidinethione, inchi=1/c3h6n2s/c6-3-4-1-2-5-3/h1-2h2,(h2,4,5,6, n,n-ethylenethiourea, pdqazbwrqcgbev-uhfffaoysa-n, Ethlenethiourea, Imidazolidinethione, N,N’-Ethylenethiourea, Sanceller 22, Soxinol 22, Robac 22, Mercazin I, Warecure C, Rhenogran ETU, 2-Imidazoline-2-thiol, Mercaptoimidazoline, Pennac CRA, Vulkacit NPV/C, Akrochem etu-22, 2-MERCAPTO IMIDAZOLINE, Nocceler 22, 2-Thiol-dihydroglyoxaline, Ethylene thiourea (ETU), Vulkacit NPV/C2, 2-Mercapto-2-imidazoline, Imidazoline-2-thiol, Rhodanin S 62, 1,3-Ethylene-2-thiourea, Mercozen, 1,3-Ethylenethiourea, 12261-94-8, 4,5-Dihydro-2-mercaptoimidazole, Imidazoline-2(3H)-thione, Sodium-22 neoprene accelerator, NA-22-D, Tetrahydro-2H-imidazole-2-thione, 4,5-Dihydroimidazole-2(3H)-thione, Thiourea, N,N’-(1,2-ethanediyl)-, 2-Imidazolidinetione, MLS000069432, Cobalt(I I) nitrate, ETU, SMR000059087, 24FOJ4N18S, CHEBI:34750, Ethylene thiourea 10 microg/mL in Acetonitrile, Imidazoline, 2-mercapto-, Rodanin S-62 [Czech], Ethylene thiouree, Ethylene thiouree [French], RCRA waste number U116, CAS-96-45-7, USAF EL-62, 2-Merkaptoimidazolin [Czech], 2-Merkaptoimidazolin, Rodanin S-62, 2-Thioxoimidazolidine, Urea, 1,3-ethylene-2-thio-, NA-22, NCI-C03372, RCRA waste no. U116, Imidazole-2(3H)-thione, 4,5-dihydro-, 2-mercapto-4,5-dihydroimidazole, mancozeb TP1, MFCD00005276, 2-imidazolidine-thione, n,n’-ethylene thiourea, Ethylenethiourea (ETU), imidazolidine, 2-thio-, Opera_ID_324, N(OO(3)AAoea), Ethylenethiourea (Standard), SCHEMBL41176, 2-Imidazolidinethione, 98%, MLS002415731, BIDD:ER0692, CHEMBL11860, SCHEMBL137081, SCHEMBL243966, SCHEMBL1682945, SCHEMBL20719507, BDBM62876, cid_2723650, HMS2230P07, HMS3372A09, HY-W010593R, MSK24013, STR00167, Tox21_201294, Tox21_301034, SBB004362, STK369397, STL131803, AKOS000120435, AKOS000431145, CS-W011309, HY-W010593, NCGC00091855-01, NCGC00091855-02, NCGC00091855-03, NCGC00091855-04, NCGC00254936-01, NCGC00258846-01, 1ST24013, BP-30094, DA-53023, NCI60_001620, SMR000777952, MSK24013-1000, I0004, NS00008290, ST50886956, EN300-21447, A10690, 1ST24013-1000, 2-Imidazolidinethione, purum, >=98.0% (HPLC), A845596, Q408767, Ethylene thiourea Solution in Methanol, 1000?g/mL, Ethylene thiourea Solution in Methanol, 1000mug/mL, 2-Imidazolidinethione, PESTANAL(R), analytical standard, F0001-2297, Z104497392

Application

Ethylenethiourea is primarily employed as a vulcanization accelerator in the production of polychloroprene and other synthetic rubbers. It also serves as a corrosion inhibitor in metalworking fluids and as an intermediate in agrochemical synthesis. Researchers utilize this compound in studies of thyroid hormone disruption due to its goitrogenic properties. Its stability and reactivity make it useful in organic synthesis for constructing heterocyclic frameworks.

Safety and Hazards

GHS Hazard Statements

• H302: Harmful if swallowed [Warning Acute toxicity, oral]
• H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
• H320: Causes eye irritation [Warning Serious eye damage/eye irritation]
• H360: May damage fertility or the unborn child [Danger Reproductive toxicity]
• H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
• H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
• H402: Harmful to aquatic life [Hazardous to the aquatic environment, acute hazard]
• H412: Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P203, P260, P261, P264, P264+P265, P270, P272, P273, P280, P301+P317, P302+P352, P305+P351+P338, P318, P319, P321, P330, P333+P317, P337+P317, P362+P364, P405, and P501

Hazard Classes and Categories

• Acute Tox. 4 (84.5%)
• Acute Tox. 4 (10.9%)
• Carc. 2 (51%)
• Repr. 1B (52.9%)
• Repr. 1B (47.1%)
• STOT RE 1 (51.3%)
• Aquatic Chronic 3 (16.5%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.