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59760

1-Methylimidazolium hydrogen sulfate

Name: 1-Methylimidazolium hydrogen sulfate
Brand: ALDRICH

95%

Synonym(s):

1-Methylimidazole hydrogen sulfate

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About This Item

Empirical Formula (Hill Notation):

C₄H₆N₂ · H₂SO₄

CAS Number:

681281-87-8

Molecular Weight:

180.18

NACRES:

NA.22

PubChem Substance ID:

57651695

UNSPSC Code:

12352100

MDL number:

MFCD06798198

Assay:

≥94.5% (HPLC), 95%

Form:

solid

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Properties

Quality Level

200

assay

≥94.5% (HPLC), 95%

form

solid

impurities

≤1% water

anion traces

chloride (Cl^-): ≤20 mg/kg

SMILES string

OS(O)(=O)=O.Cn1ccnc1

InChI

1S/C4H6N2.H2O4S/c1-6-3-2-5-4-6;1-5(2,3)4/h2-4H,1H3;(H2,1,2,3,4)

InChI key

TVEOIQKGZSIMNG-UHFFFAOYSA-N

Description

Application

1-Methylimidazolium hydrogen sulfate is a Brønsted acidic ionic liquid that can be used:

As a component of a catalytic system along with chlorotrimethylsilane used in the preparation of 3,4-dihydropyrimidin-2(1H)-ones and hydroquinazoline-2,5-diones.
As a catalyst in the preparation of biologically important 2,5-dimethyl-N-substituted pyrroles.
As a reusable catalyst in the preparation of spiro[indoline-3′,2-quinazoline]2′,4(3H)-dione.
In the leaching of copper and zinc in brass dross using H₂O₂ as an oxidant.

pictograms

GHS05

signalword

Danger

hcodes

H314

pcodes

P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

wgk

WGK 3

flash_point_f

>536.0 °F - (External MSDS)

flash_point_c

> 280 °C - (External MSDS)

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Articles

BASIONICS™ Ionic Liquids

BASIONICS™ Ionic Liquids offer diverse properties for varied applications in the BASF portfolio.

An environmental friendly approach for the synthesis of spiro [indoline-3′, 2-quinazoline] 2′, 4 (3H)-dione using 1-methylimidazolium hydrogen sulfate, as reusable catalyst

Kefayati H, et al.

J. Chin. Chem. Soc., 60(10), 1197-1201 (2013)

1-Methylimidazolium hydrogen sulfate/chlorotrimethylsilane: an effective catalytic system for the synthesis of 3, 4-dihydropyrimidin-2 (1H)-ones and hydroquinazoline-2, 5-diones