2-咪唑烷硫酮

Description

2-Imidazolidinethione · CAS 96-45-7 · C3H6N2S. UNII 24FOJ4N18S. Boiling Point: 446 to 595 °F at 760 mmHg (NIOSH, 2024); Boiling Point: 446-595 °F; Melting Point: 397 to 399 °F (NTP, 1992).

Identification

CAS Registry Number	96-45-7
PubChem CID	2723650
Molecular formula	C3H6N2S
IUPAC name	imidazolidine-2-thione
UNII (FDA)	24FOJ4N18S

Computed Descriptors

Molecular Weight	102.16
XLogP3	-0.7
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	102.02516937
Monoisotopic Mass	102.02516937
Topological Polar Surface Area	56.2
Heavy Atom Count	6
Formal Charge	0

Physical & Chemical Properties

Boiling Point	446 to 595 °F at 760 mmHg (NIOSH, 2024)
Boiling Point	446-595 °F
Melting Point	397 to 399 °F (NTP, 1992)
Melting Point	203 °C
Melting Point	194 °C
Melting Point	392 °F
Flash Point	486 °F (NTP, 1992)
Flash Point	486 °F
Flash Point	252 °C
Solubility	1 to 5 mg/mL at 64 °F (NTP, 1992)

Physical description & handling notes

• 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. (NTP, 1992)
• Other Solid; Dry Powder
• White to pale-green, crystalline solid with a faint, amine odor. [Note: Used as an accelerator in the curing of polychloroprene & other elastomers.]; [NIOSH]
• WHITE CRYSTALS OR POWDER.
• White to pale-green, crystalline solid with a faint, amine odor.
• Needles, prisms from alcohol or amyl alcohol

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS MERCAPTOIMIDAZOLINE--PROHIBITED

GHS Hazard Classification

Reported hazard statements	H302, H312 (10.9%), H351 (51%), H360 (52.9%), H372 (51.3%), H412 (16.5%), H317, H402

Documented Uses

• Ethylene thiourea is used as an accelerator in synthetic rubber production and as a curing agent for epichlorohydrin elastomers. Ethylene thiourea is also a component of ethylenebisdithiocarbamate fungicides.
• The alkylthioureas are used as rubber accelerators; they are also used in insoles, adhesives, wet suits, detergents, plastics, and textiles. [Marks, p. 240] Used in electroplating baths and in the production of antioxidants, insecticides, fungicides, rubber accelerators, dyes, drugs, and resins; [Hawley]
• Textiles (Fiber & Fabric Manufacturing) [Category: Industry]
• ... It was found that ETU ... was present in 28 different ethylenebisdithiocarbamate commercial products.
• Accelerator for neoprene rubbers, eg, for coated fabrics, for epichlorohydrin rubbers, and for chlorosulfonated polyethylene rubbers.
• For more Uses (Complete) data for Ethylene thiourea (7 total), please visit the HSDB record page.

Synonyms

imidazolidine-2-thione; 96-45-7; ETHYLENE THIOUREA; Ethylenethiourea; 2-Imidazolidinethione; 2-Mercaptoimidazoline; Imidazolidinethione; Soxinol 22; Mercazin I; Warecure C; Rhenogran ETU; Pennac CRA; N,N'-Ethylenethiourea; Sanceller 22; Vulkacit NPV/C; Nocceler 22

Frequently Asked Questions

What are the CAS number and molecular formula of 2-Imidazolidinethione?

CAS 96-45-7; molecular formula C3H6N2S; molecular weight — g/mol.

What other names is 2-Imidazolidinethione known by?

imidazolidine-2-thione, 96-45-7, ETHYLENE THIOUREA, Ethylenethiourea, 2-Imidazolidinethione, 2-Mercaptoimidazoline.

What is the regulatory status of 2-Imidazolidinethione?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; MERCAPTOIMIDAZOLINE--PROHIBITED.

Is 2-Imidazolidinethione classified as hazardous?

Hazard statements reported: H302, H312, H351, H360, H372.

What are the key physical properties of 2-Imidazolidinethione?

Boiling Point: 446 to 595 °F at 760 mmHg (NIOSH, 2024); Boiling Point: 446-595 °F; Melting Point: 397 to 399 °F (NTP, 1992); Melting Point: 203 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.