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2,4-Dimethylimidazole

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Name

2,4-Dimethylimidazole

EINECS 213-221-4
CAS No. 930-62-1 Density 1.027 g/cm3
PSA 28.68000 LogP 1.02650
Solubility Soluble in water. Melting Point 85-87 ºC
Formula C5H8N2 Boiling Point 273.7 °C at 760 mmHg
Molecular Weight 96.1319 Flash Point 142.3 °C
Transport Information N/A Appearance Yellowish transparent liquid
Safety 26-36/37/39-45 Risk Codes 22-34
Molecular Structure Molecular Structure of 930-62-1 (2,4-Dimethylimidazole) Hazard Symbols CorrosiveC
Synonyms

1H-Imidazole,2,4-dimethyl- (9CI);Imidazole, 2,4(or 2,5)-dimethyl- (6CI,7CI);Imidazole,2,4-dimethyl- (8CI);2,4-Dimethyl-1H-imidazole;2,4-Dimethylimidazole;2,5-Dimethylimidazole;2-Methyl-4-methylimidazole;NSC 13192;

Article Data 28

2,4-Dimethylimidazole Specification

The 2,4-Dimethylimidazole with registry number of 930-62-1 is also called 2-Methyl-4-methylimidazole. The IUPAC name is 2,5-dimethyl-1H-imidazole. Its EINECS registry number is 213-221-4. In addition, the formula is C5H8N2 and the molecular weight is 96.13042. It belongs to the classes of Imidazoles, Pyrroles, Pyrazoles, Pyrrolidines; Pharmacetical; Imidazoles; Imidaxoles. What's more, it is a kind of yellow to orange weak mass or viscous liquid.

Physical properties about this chemical are: (1)ACD/LogP: 0.09; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -2.32; (4)ACD/LogD (pH 7.4): -1.15; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1.52; (9)#H bond acceptors: 2; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 17.82 Å2; (13)Index of Refraction: 1.519; (14)Molar Refractivity: 28.42 cm3; (15)Molar Volume: 93.5 cm3; (16)Polarizability: 11.26 ×10-24cm3; (17)Surface Tension: 40.7 dyne/cm; (18)Density: 1.027 g/cm3; (19)Flash Point: 142.3 °C; (20)Enthalpy of Vaporization: 49.14 kJ/mol; (21)Boiling Point: 273.7 °C at 760 mmHg; (22)Vapour Pressure: 0.00945 mmHg at 25°C.

Preparation of 2,4-Dimethylimidazole: it can be prepared by 2,5-dimethyl-imidazole-1-carbonitrile. This reaction will need reagent 10percent aq. KOH and solvent methanol. The reaction time is 14 hours with ambient temperature. The yield is about 89%.

 2,4-Dimethylimidazole can be prepared by 2,5-dimethyl-imidazole-1-carbonitrile.

Uses of 2,4-Dimethylimidazole: it can react with acetyl chloride to get 1-acetyl-4,5-dimethylimidazole. This reaction will need reagent Et3N and solvent tetrahydrofuran. The reaction time is 12 hours with reaction temperature of 0 °C and the yield is about 62%.

2,4-Dimethylimidazole can react with acetyl chloride to get 1-acetyl-4,5-dimethylimidazole.

When you are using this chemical, please be cautious about it as the following:
It is harmful if swallowed and can cause burns. You should wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.). And in case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: n1cc(nc1C)C
(2)InChI: InChI=1/C5H8N2/c1-4-3-6-5(2)7-4/h3H,1-2H3,(H,6,7)
(3)InChIKey: LLPKQRMDOFYSGZ-UHFFFAOYAK

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LDLo intraperitoneal 500mg/kg (500mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: TREMOR

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
Veterinary and Human Toxicology. Vol. 41, Pg. 363, 1999.

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