MilliporeSigma
All Photos(8)

792527

Sigma-Aldrich

Imidazole

anhydrous, free-flowing, Redi-Dri, ACS reagent, ≥99%

Synonym(s):
1,3-Diaza-2,4-cyclopentadiene, Glyoxaline
Empirical Formula (Hill Notation):
C3H4N2
CAS Number:
Molecular Weight:
68.08
Beilstein:
103853
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

grade

ACS reagent
anhydrous

vapor pressure

<1 mmHg ( 20 °C)

product line

Redi-Dri

assay

≥99%

form

solid

quality

free-flowing

impurities

≤0.2% water

ign. residue

≤0.1%

pH

9.5-11.0 (25 °C, 5% in H2O)

pKa (25 °C)

6.95

bp

256 °C (lit.)

mp

88-91 °C (lit.)

cation traces

Fe: ≤0.001%

SMILES string

c1c[nH]cn1

InChI

1S/C3H4N2/c1-2-5-3-4-1/h1-3H,(H,4,5)

InChI key

RAXXELZNTBOGNW-UHFFFAOYSA-N

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Packaging

1 kg in poly bottle
100, 500 g in poly bottle

Application

Excellent for buffers in the range of pH 6.2-7.8

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1C

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 2

Flash Point(F)

293.0 °F - closed cup

Flash Point(C)

145 °C - closed cup

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

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