Sigma-Aldrich

Imidazole

I2399 -

ACS reagent, ≥99% (titration)

DOWNLOAD MSDS (PDF)

Synonym: 1,3-Diaza-2,4-cyclopentadiene, Glyoxaline

  • CAS Number: 288-32-4

  • Empirical Formula (Hill Notation): C3H4N2

  • Molecular Weight: 68.08

  • Beilstein Registry Number: 103853

  • EC Number: 206-019-2

  • MDL number: MFCD00005183

  • PubChem Substance ID: 24895975

Imidazole ACS reagent, ≥99% (titration)
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Properties

Related CategoriesACS Grade, ACS Grade Buffers, Biological Buffers, Buffers A to Z, Building Blocks,
Quality LevelPREMIUM
gradeACS reagent
vapor pressure<1 mmHg ( 20 °C)
assay≥99% (titration)
total impurities≤0.2% water
ign. residue ≤0.1%
pH9.5-11.0 (25 °C, 5% in H2O)
pKa (25 °C)6.95
bp256 °C(lit.)
mp88-91 °C(lit.)
cation tracesFe: ≤0.001%
Show all 12 properties

Description

Application

Excellent for buffers in the range of pH 6.2-7.8

Packaging

100, 500 g in glass btl

Price and Availability

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Documents

Certificate of Analysis

Certificate of Origin

I2399 - Product Information Sheet (68KB)
Structure Search
Pressure-Temperature Nomograph
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Safety Information

SymbolGHS05GHS07GHS08  GHS05, GHS07, GHS08
Signal wordDanger
Hazard statementsH302-H314-H360D
Precautionary statementsP201-P280-P305 + P351 + P338-P310
Personal Protective EquipmentEyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
Hazard CodesC
Risk Statements22-34
Safety Statements26-36/37/39-45
RIDADRUN 2923 8/PG 3
WGK Germany1
RTECSNI3325000
Flash Point(F)293 °F
Flash Point(C)145 °C
Technical information & documentation associated with this product is available in the Safety & Documentation tab.

References

R. Breslow, Review: As RNase model. Acc. Chem. Res. 24, 317, (1991)

B. Storrie, E.A. Madden, Buffer for assay of horseradish peroxidase. Meth. Enzymol. 182, 217, (1990)

Merck 14,4912

Beil. 23,V,4,191

Fieser 1,492 / Fieser 2,220

Aldrich MSDS 1, 1083:B / Corp MSDS 1 (1), 1973:D / FT-IR 2 (3), 3503:B / FT-IR 1 (2), 611:D / FT-NMR 1 (3), 75:B / IR-Spectra (3), 1217:G / IR-Spectra (2), 1060:E / NMR-Reference 2 (2), 484:D / RegBook 1 (2), 2351:A / Sax 6, 1605 / Sigma FT-IR 1 (2), 648:C / Structure Index 1, 371:D:6 / Vapor Phase 3, 1483:C


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