1,2-Dimethylimidazole Chemical Properties

Melting point:

37-39 °C (lit.)

Boiling point:

204 °C (lit.)

Density 

1.084 g/mL at 25 °C (lit.)

vapor pressure 

1 mm Hg ( 20 °C)

refractive index 

1.5000 (estimate)

Flash point:

198 °F

storage temp. 

Store below +30°C.

pka

7.76±0.25(Predicted)

form 

Low Melting Mass

Specific Gravity

1.084

color 

Colorless to yellow

PH

12.6 (500g/l, H2O, 20℃)

Water Solubility 

Soluble in water.

BRN 

108457

InChIKey

GIWQSPITLQVMSG-UHFFFAOYSA-N

LogP

0.11 at 25℃

CAS DataBase Reference

1739-84-0(CAS DataBase Reference)

NIST Chemistry Reference

1H-Imidazole, 1,2-dimethyl-(1739-84-0)

EPA Substance Registry System

1H-Imidazole, 1,2-dimethyl- (1739-84-0)

Safety Information

Hazard Codes 

Xn,Xi

Risk Statements 

22-38-41

Safety Statements 

24-26-2

RIDADR 

UN 3263 8/PG 2

WGK Germany 

2

RTECS 

NI4838854

Autoignition Temperature

896 °F

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

29332990

Toxicity

LD50 orally in Rabbit: 1300 mg/kg

MSDS

• Language:English Provider:1,2-Dimethylimidazole
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

1,2-Dimethylimidazole Usage And Synthesis

Chemical Properties

colorless to yellow low melting mass

Uses

1,2-Dimethylimidazole is used in the synthesis of 1,2-dimethyl-3-n-butylimidazoliumchloride and 1,2-dimethyl-3-n-propylimidazolium chloride. It also can be used in the synthesis of 1-(2-methoxyethyl)-2,3-dimethylimidazolium chloride and hexafluorophosphate salts.

Uses

1,2-Dimethylimidazole was used in the synthesis of 1,2-dimethyl-3-n-butylimidazoliumchloride and 1,2-dimethyl-3-n-propylimidazolium chloride. It was also used in the synthesis of 1-(2-methoxyethyl)-2,3-dimethylimidazolium chloride and hexafluorophosphate salts.

Definition

ChEBI: 1,2-dimethylimidazole is a member of imidazoles.

General Description

1,2-Dimethylimidazole reacts with copper(II) tetraacetate to yield cis-bis(acetato)bis(1,2-dimethylimidazole) copper(II) complex. It undergoes Menschutkin reaction with benzyl bromide to yield 3-benzyl-1,2-dimethylimidazolium bromide and kinetics of reaction was studied in various ionic liquids and molecular organic solvents.

Flammability and Explosibility

Not classified

Purification Methods

Crystallise the imidazole from *benzene, dry and store it at 0-4o. The picrate crystallises from H2O or EtOH with m 181o. [Balaban & Pymann J Chem Soc 125 1570 1924, Gorun et al. J Am Chem Soc 109 4244 1987, Beilstein 23 H 66, 23 II 56, 23 III/IV 594.]

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