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Ethylenethiourea

Ethylenethiourea structure

CAS No:
96-45-7
Formula:
C3H6N2S
Chemical Name:
Ethylenethiourea
Synonyms:
2-Imidazolidinethione;Imidazoline-2-thiol;Ethylenethiourea;N,N′-Ethylenethiourea;Warecure C;Thiourea,N,N′-1,2-ethanediyl-;NA 22;Tetrahydro-2H-imidazole-2-thione;Imidazoline-2(3H)-thione;2-Mercaptoimidazoline;Imidazolidinethione;Mercaptoimidazoline;2-Mercapto-2-imidazoline;2-Imidazoline-2-thiol;4,5-Dihydro-2-mercaptoimidazole;Rhodanin S 62;1,3-Ethylenethiourea;Pennac CRA;ETU;Mercazin I;Rhenogran ETU;Vulkacit NPV/C;Soxinol 22;Nocceler 22;2-Thioimidazolidine;Accel 22;Accel 22S;Sanceler 22;Sanceler 22C;2-Mercapto-4,5-dihydroimidazole;Ethylenethiocarbamide;ETC;END 75;Sanceler 22S;ETU 22S;ETU 80;Rhenogran ETU 80;TU 2;Sanmix 22-80E;Rhenogran ETU 75;ETU 75;Accelerator ETU;Accelerator NA 22;96-46-8;12261-94-8;26856-29-1;71836-04-9;90613-75-5;875479-38-2;1342300-13-3
Categories:
Chemical Reagents > Organic Reagents

Description

Ethylene 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 is available in the United States as crystals, as a powder,

Ethylenethiourea Basic Attributes

Molecular Weight：

102.16

Exact Mass：

102.16

EC Number：

202-506-9

HScode：

29332990

Characteristics

PSA：

56.2

XLogP3：

-0.66 (calculated)

Appearance：

White Powder

Density：

(at 20 °C): 1,26-1,28 g/cm³

Melting Point：

199-204 °C

Boiling Point：

347.18 °C

Flash Point：

252 °C

Refractive Index：

1.664

Water Solubility：

H2O: 19 g/L (20 ºC)

Storage Conditions：

0-6°C

Vapor Pressure：

Vapour pressure, Pa at 25°C: 133

Toxicity：

LD50 orally in rats: 1832 mg/kg (Graham, Hansen)

Flammability characteristics：

Combustible Solid

Odor：

Faint, amine odor

Safety Information

Packing level：

III

Hazard category：

6.1(b)

Transport codes：

2811

wgk germany：

hazard class code：

61-22-48/23/25-40

safety instructions：

53-45

RTECS Number：

NI9625000

Marks：

Storage features：

Separated from strong oxidants. Store in an area without drain or sewer access.

Stability/Shelf Life：

Stable under normal temperatures and pressures.

Precautionary statement(s)：

P201, P202, P264, P270, P281, P301+P312, P308+P313, P330, P405, P501

Hazard Statements：

H302

Ethylenethiourea Use and Manufacturing

Methods of Manufacturing

Put 24 kg of ethylenediamine, 48 kg of industrial alcohol, and 60 kg of distilled water into the reactor in turn. Under stirring, slowly add 32 kg CS2, and control the temperature at about 60 ℃ during the dropwise addition. After the addition of CS2, the temperature was raised to 100 ℃ and refluxed for 1 h. Then add 3.6 kg concentrated hydrochloric acid and reflux for 9 to 10 hours. Cool crystallization. Suction filter was washed and dried with acetone to obtain product. The yield is about 80% to 85%.

Uses

Accelerator in synthetic rubber production.

Computed Properties

Molecular Weight:102.16
XLogP3:-0.7
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:1
Exact Mass:102.02516937
Monoisotopic Mass:102.02516937
Topological Polar Surface Area:56.2
Heavy Atom Count:6
Complexity:63.2
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Phosphorus oxychloride

Sodium hydroxide

1-Propanol

Nitrogen

Trichloroethylene

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