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I0250

Sigma-Aldrich

Imidazole

≥99% (titration), crystalline

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:
eCl@ss:
39161001
PubChem Substance ID:
NACRES:
NA.25

Quality Level

vapor pressure

<1 mmHg ( 20 °C)

assay

≥99% (titration)

form

crystalline

impurities

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

color

white

pH

6.2-7.8 (25 °C)

pKa (25 °C)

6.95

bp

256 °C (lit.)

mp

88-91 °C (lit.)

solubility

water: 500 mg/mL, clear, colorless to very faintly yellow

storage temp.

room temp

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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Related Categories

Packaging

1, 5, 25, 100, 250 g in glass bottle

Application

Excellent for buffers in the range of pH 6.2-7.8

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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).

Protocols

Enzymatic Assay of Fructose-6-Phosphate Kinase Pyrophosphate Dependent

Enzymatic Assay of Fructose-6-Phosphate Kinase Pyrophosphate Dependent

Sildenafil Citrate USP Method Using HPTLC Plates for the Limit of Imidazole Test

In the present study we demonstrate compliance of silica gel 60 F254 HPTLC plates with USP requirements, and how HPTLC plates are suitable for the Sildenafil citrate-Limit of Imidazole test.

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