I0250
Sigma

Imidazole

≥99% (titration), crystalline

zoom

1 of 1

Synonym

1,3-Diaza-2,4-cyclopentadiene

Glyoxaline

Molecular Formula

C₃H₄N₂

Molecular Weight

68.08

CAS Number

288-32-4

Beilstein Registry Number

103853

MDL number

MFCD00005183

PubChem Substance ID

24895898

EG/EC Number

206-019-2

Expand/Collapse All

Descriptions

Application

Excellent for buffers in the range of pH 6.2-7.8

Enhanced Quality Profile

The Enhanced Quality Profile characterizes an individual product's quality traits in a multilevel system to assure that a given product meets the quality requirements of our customers.

Properties

vapor pressure

<1 mmHg ( 20 °C)

assay

≥99% (titration)

form

crystalline

total impurities

≤0.005% Fluorescence blank(β-NADH equivalence.)

color

white

pKa (25 °C)

6.95

256 °C(lit.)

88-91 °C(lit.)

References

Reference

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

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

Merck

Merck 13,4935

Beilstein

Beil. 23,V,4,191

Fieser

Fieser 1,492 / Fieser 2,220

reference

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

Safety

Hazard Codes

Risk Statements

22-34

Safety Statements

26-36/37/39-45

RIDADR

UN2923 8 /PG 3

WGK Germany

RTECS

NI3325000

Flash Point(F)