IMIDAZOLE

IMIDAZOLE AR/ACS

Buffer substance for pH 6.2 - 7.8
1,3-Diaza-2,4-cyclopentadiene; Glyoxaline

Article No.

04161

Grade

AR/ACS

Purity

99%

CAS No.

288-32-4

Molecular Formula

C₃H₄N₂

Molecular Weight

68.08

H.S. Code

2933.2990

Shelf Life

60 Months

MSDS

Certificate of Analysis (COAs)

Physical Properties

Physical state at 20 °C

Solid

Colour

White to pale yellow

Odour

Amine like

pH value

9.5 - 11

Melting point/ Freezing point [°C]

88 - 91 °C

Flash point [°C]

> 135 °C

Boiling point [°C]

256 °C

Vapour pressure [20°C]

0.003 hPa at 20 °C

Density [g/cm3]

1.03

Solubility in water [% weight]

Soluble in water

Partition coefficient Log Pow octanol / water at 20°C

0.02

Packings

100 g (00100)
500 g (00500)

Specifications

Appearance	White to off white crystals/ crystalline powder/flakes
Assay (by HClO4 titration)	Min 99.0%
pH (5% solution in water)	9.5 - 11.0
Melting point	88 - 90°C
Iron (Fe)	Max 0.0005%
Sulphated ash	Max 0.1%
Water (H2O)	Max 0.2%

Safety Information and Hazard Symbols

Symbol: GHS05, GHS07, GHS08
Signal Word: Danger
UN No.: 3263
IMCO Class No.: 8
Packing Group: II
Hazardous Statement: H302-H314-H360D
Precaution Statement: P201-P280-P305 + P351 + P338-P310

Revision Date : 05-Jan-2023

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