MilliporeSigma
All Photos(1)

Documents

59760

Sigma-Aldrich

1-Methylimidazolium hydrogen sulfate

95%

Sign Into View Organizational & Contract Pricing

Synonym(s):
1-Methylimidazole hydrogen sulfate
Empirical Formula (Hill Notation):
C4H6N2 · H2SO4
CAS Number:
Molecular Weight:
180.18
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

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

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
40477MX112386868
1-Methylimidazolium chloride 95%

40477

1-Methylimidazolium chloride

1-Methylimidazole

MX1123

1-Methylimidazole

Tetrabutylammonium bisulfate puriss., ≥99.0% (T)

86868

Tetrabutylammonium bisulfate

form

solid

form

-

form

liquid

form

crystals

impurities

≤1% water

impurities

≤1% water

impurities

-

impurities

-

anion traces

chloride (Cl-): ≤20 mg/kg

anion traces

-

anion traces

-

anion traces

-

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

Corrosion

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class

8A - Combustible, corrosive hazardous materials

wgk_germany

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


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

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)
Application of 1-methylimidazolium hydrogen sulfate ionic liquid to the oxidative leaching of copper and zinc in industrial brass dross
Energy Technology 2015, 209-215 (2015)
1-Methylimidazolium hydrogen sulfate/chlorotrimethylsilane: an effective catalytic system for the synthesis of 3, 4-dihydropyrimidin-2 (1H)-ones and hydroquinazoline-2, 5-diones
Kefayati H, et al.
Journal of Molecular Liquids, 172, 147-151 (2012)
Daqing Li et al.
Ultrasonics sonochemistry, 20(5), 1144-1148 (2013-03-15)
Ionic liquid [HMIM]HSO4 was found to be an efficient catalyst for the synthesis of N-substituted pyrroles through the reaction of 2,5-hexanedione with amines under ultrasonic irradiation at room temperature. These reactions proceed with good yields under short reaction time. Furthermore

Articles

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

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service