| Identification | More | [Name]
2-Ethyl-4-methylimidazole | [CAS]
931-36-2 | [Synonyms]
2-ETHYL-4-METHYL-1H-IMIDAZOLE
2-ETHYL-4-METHYLIMIDAZOLE
4-METHYL-2-ETHYLIMIDAZOLE
EMI24
LABOTEST-BB LTBB000689
TIMTEC-BB SBB004334
1H-Imidazole,2-ethyl-4-methyl-
2-ethyl-4-methyl-1h-imidazol
Curazol 2E4MZ
Ethylmethyl imidazole
Imidazole, 2-ethyl-4(or 5)-methyl-
Imidazole, 2-ethyl-4-methyl-
2-Ethyl-4-methylimidazole, 99+%
2E4MZ
Curezol-2E4MZ
EMI-70
Epicure-EMI-24
Imicure-EMI-24
2-Ethyl-4-methyl-3H-imidazole
2-Ethyl-5-methyl-1H-imidazole | [EINECS(EC#)]
213-234-5 | [Molecular Formula]
C6H10N2 | [MDL Number]
MFCD00005193 | [Molecular Weight]
110.16 | [MOL File]
931-36-2.mol |
| Chemical Properties | Back Directory | [Appearance]
clear yellow viscous liquid after melting | [Melting point ]
47-54 °C (lit.) | [Boiling point ]
292-295 °C (lit.) | [density ]
0.975 g/mL at 25 °C(lit.)
| [vapor pressure ]
0.028Pa at 20℃ | [refractive index ]
n20/D 1.5(lit.)
| [Fp ]
280 °F
| [storage temp. ]
Inert atmosphere,Room Temperature | [form ]
powder to lump to clear liquid | [pka]
15.32±0.10(Predicted) | [color ]
White or Colorless to Yellow to Orange | [Specific Gravity]
0.975 | [Water Solubility ]
210 g/L (20 ºC) | [Detection Methods]
GC,NMR | [BRN ]
1711 | [InChIKey]
ULKLGIFJWFIQFF-UHFFFAOYSA-N | [LogP]
1.13 at 25℃ | [Uses]
Curing epoxy-resin systems. | [CAS DataBase Reference]
931-36-2(CAS DataBase Reference) | [NIST Chemistry Reference]
1H-Imidazole, 2-ethyl-4-methyl-(931-36-2) | [EPA Substance Registry System]
931-36-2(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xn,Xi | [Risk Statements ]
R22:Harmful if swallowed.
R41:Risk of serious damage to eyes. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S39:Wear eye/face protection . | [WGK Germany ]
2
| [RTECS ]
NI6147500 | [F ]
10 | [Hazard Note ]
Irritant/Harmful | [TSCA ]
Yes | [HS Code ]
29332900 |
| Hazard Information | Back Directory | [Chemical Properties]
clear yellow viscous liquid after melting | [Application]
2-Ethyl-4-methylimidazole(931-36-2) is an important synthetic intermediate. It is used as an intermediate in pharmaceuticals, agrochemicals, dyes, textile auxiliaries, pigments and other organic chemicals. It can be used as a basic ingredient in other active ingredients, as a catalyst in chemical reactions, and in the curing of epoxy resins.
| [Definition]
ChEBI: 5K8XI641G3 is a member of imidazoles. | [Preparation]
2-Ethyl-4-methylimidazole(931-36-2) was prepared as follows: diamine and propionitrile have a cyclization reaction sequentially at the temperature of 80-110 DEG C and 120-140 DEG C under the catalysis of a catalyst; a product after the cyclization reaction has a dehydrogenation reaction through raney nickel at the temperature of 170-200 DEG C, and 2-ethyl-4-methylimidazole is obtained.
| [Flammability and Explosibility]
Nonflammable | [Synthesis]
Dehydrogenation reaction: 550 g of 2-ethyl-4-methylimidazole dihydrochloride was placed in a three-necked flask fitted with an electric stirring device. Preparation of Ruanne nickel catalyst: 22 g of Ruanne nickel was added to 60 mL of 20 wt% potassium hydroxide aqueous solution and stirred for 15 min, followed by washing with pure water and ethanol. The prepared nickel ruanne catalyst was added to the reaction system. The reaction system was heated in an oil bath, the temperature was controlled to 190°C, and the reaction was continuously stirred for 3.5 hours. Upon completion of the reaction, the reaction solution was left to clarify, and the upper layer of clarified liquid was separated and removed. The residue was diluted with a small amount of toluene and filtered to remove the Nguyenay Ni catalyst. The filtrates were combined and vacuum distilled. Fractions with boiling points of 150-160°C/10 mmHg were collected to give 488 g of 2-ethyl-4-methylimidazole in 90.4% yield. The product was analyzed by gas chromatography and the purity was greater than 97%. | [References]
[1] Patent: CN105367499, 2016, A. Location in patent: Paragraph 0019; 0029; 0031; 0032; 0033 |
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