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Name	1,2-Dimethylimidazole	EINECS	217-101-2
CAS No.	1739-84-0	Density	0.98 g/cm³
PSA	17.82000	LogP	0.72850
Solubility	Soluble in water.	Melting Point	37-39 °C(lit.)
Formula	C₅H₈N₂	Boiling Point	206 °C at 760 mmHg
Molecular Weight	96.1319	Flash Point	73 °C
Transport Information	UN 3263 8/PG 2	Appearance	colorless to yellow low melting mass
Safety	24-26-2	Risk Codes	22-38-41
Molecular Structure		Hazard Symbols	Xn,Xi
Synonyms	Imidazole,1,2-dimethyl- (6CI,7CI,8CI);1,2-Dimethyl-1H-imidazole;2,3-Dimethyl-1H-imidazole;Curezol 1,2DMZ;N,2-Dimethylimidazole;NSC 111174;PC CAT DMI;SN 25 (vulcanizing agent);Toyocat DM 70;	Article Data	45

1,2-Dimethylimidazole Synthetic route

: 67-56-1
methanol

: 693-98-1
2-methylimidazole

: 1739-84-0
1,2-dimethyl-1H-imidazole

Conditions

Conditions	Yield
H-Y zeolite at 299.9℃;	92.5%
zeolite HNaY at 300 - 400℃;	83%

: 131543-46-9
Glyoxal

: 75-07-0
acetaldehyde

: 74-89-5
methylamine

A: 616-47-7
1-methyl-1H-imidazole

B: 1739-84-0
1,2-dimethyl-1H-imidazole

C: 693-98-1
2-methylimidazole

Conditions

Conditions	Yield
With ammonium hydroxide In water at 25 - 70℃; under 225023 Torr; Pressure; Temperature;	A 6.27% B 85.1% C 6.59%

...Expand

: 693-98-1
2-methylimidazole

: 616-38-6
carbonic acid dimethyl ester

: 1739-84-0
1,2-dimethyl-1H-imidazole

Conditions

Conditions	Yield
With 18-crown-6 ether; potassium carbonate at 100℃; for 8h;	85%
With 18-crown-6 ether; potassium carbonate at 100℃; for 10h;	85%
In N,N-dimethyl-formamide at 120 - 145℃; Solvent; Temperature;	85%

: 693-98-1
2-methylimidazole

: 74-88-4
methyl iodide

: 1739-84-0
1,2-dimethyl-1H-imidazole

Conditions

Conditions	Yield
With potassium hydroxide In 1,2-dimethoxyethane at 8℃; for 0.5h;	83%
at 30℃; for 8h;	70%

: 79-20-9
acetic acid methyl ester

: 107-15-3
ethylenediamine

A: 534-26-9
lysidine

B: 1739-84-0
1,2-dimethyl-1H-imidazole

C: 693-98-1
2-methylimidazole

Conditions

Conditions	Yield
Pt/Al2O3 at 400℃; under 760 Torr;	A 6.6% B 15.2% C 61.1%
Pt/Al2O3 at 360℃; under 760 Torr;	A 15.5% B 9% C 58.5%
Pt/Al2O3 at 360℃; under 760 Torr; Product distribution; var. temp.;

: 24134-09-6
5-bromo-1,2-dimethyl-1H-imidazole

: 1739-84-0
1,2-dimethyl-1H-imidazole

Conditions

Conditions	Yield
With ammonia; sodium In tert-butyl alcohol for 0.0833333h; Mechanism; Heating; other reagent and solvent;	48%
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In toluene for 48h; Heating; Irradiation; or Na/NH3, tBuOH, reflux;	50 % Spectr.

: 24134-13-2
1,2-dimethyl-5-iodoimidazole

: 1739-84-0
1,2-dimethyl-1H-imidazole

Conditions

Conditions	Yield
With ammonia; sodium In tert-butyl alcohol for 0.0833333h; Mechanism; Heating; other reagent and solvent;	15%
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In toluene Heating; Irradiation; or Na/NH3, tBuOH, reflux;	53 % Spectr.

: 861362-00-7
4-chloro-1,2-dimethyl-1H-imidazole

: 1739-84-0
1,2-dimethyl-1H-imidazole

Conditions

Conditions	Yield
With diethyl ether; sodium

: 19225-92-4
2-chloromethyl-1-methylimidazole

: 1739-84-0
1,2-dimethyl-1H-imidazole

Conditions

Conditions	Yield
With acetic acid; zinc

: 900640-98-4
5-chloro-2-chloromethyl-1-methyl-1H-imidazole

: 1739-84-0
1,2-dimethyl-1H-imidazole

Conditions

Conditions	Yield
With potassium hydroxide; palladium on activated charcoal; hydrazine
With potassium hydroxide; Pd-BaSO4; hydrazine

1,2-Dimethylimidazole Chemical Properties

MS:

MF: C₅H₈N₂

Density: 1.084

MW: 96.13

Mp: 29-30°C

Bp: 204°C

1,2-Dimethylimidazole Toxicity Data With Reference

1,2-Dimethylimidazole is harmful if swallowed and is irritating to skin.

Besides, 1,2-Dimethylimidazole is risk of serious damage to the eyes.

1,2-Dimethylimidazole Safety Profile

Avoid 1,2-Dimethylimidazole contact with skin. In case of 1,2-Dimethylimidazole contact with eyes, rinse immediately with plenty of water and seek medical advice.

Hazard Codes：Xi,Xn
WGK Germany:2
RIDADR:UN 3263 8/PG 2
HazardClass:8
HS Code:29332990
RTECS:NI4838854

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