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Imidazole

Name: Imidazole
Brand: SIAL
Price: 66.1 USD
Availability: InStock

anhydrous grade, ACS reagent grade, ≥99%, Redi-Dri^™, free-flowing, solid

Synonym(s):

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

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Pack Size	Availability	Price
100 g	Available to ship TODAYfromMILWAUKEE	$66.10
500 g	Available to ship TODAYfromMILWAUKEE	$166.00
1 kg	Available to ship TODAYfromMILWAUKEE	$312.00

About This Item

Empirical Formula (Hill Notation):

C₃H₄N₂

CAS Number:

288-32-4

Molecular Weight:

68.08

NACRES:

NA.21

PubChem Substance ID:

329768341

UNSPSC Code:

12352100

EC Number:

206-019-2

MDL number:

MFCD00005183

Beilstein/REAXYS Number:

103853

Assay:

≥99%

Form:

solid

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Product Name

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

Quality Level

200

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%

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Show Differences

1 of 1

This Item	RDD044	RDD039	I0250
Sigma-Aldrich 792527 Imidazole	Sigma-Aldrich RDD044 Imidazole	Sigma-Aldrich RDD039 Imidazole	Sigma-Aldrich I0250 Imidazole
assay ≥99%	assay 99%	assay ≥99% (titration)	assay ≥99% (titration)
Quality Level 200	Quality Level 100	Quality Level 100	Quality Level 300
mp 88-91 °C (lit.)	mp 85-92 °C, 88-91 °C (lit.)	mp 88-91 °C (lit.)	mp 88-91 °C (lit.)
bp 256 °C (lit.)	bp 256 °C (lit.)	bp 256 °C (lit.)	bp 256 °C (lit.)
form solid	form powder	form crystalline powder	form crystalline
quality free-flowing	quality free-flowing	quality free-flowing	quality -

Application

Excellent for buffers in the range of pH 6.2-7.8

Imidazole can be used as a proton transfer agent in the synthesis of porous organic polymers because of its amphiprotic nature and fast proton transfer behavior.
Imidazole can be used as a catalyst in the following

Silylation of alcohols, carboxylic acids, and amines in the presence of silyl chloride in DMF.
To prepare acid chlorides from the corresponding carboxylic acids and phosgene.
Imidazole-PPh₃/I₂ catalytic system used in the conversion of alcohols into iodides.
Imidazole-PPh₃/I₂ is used in the diol deoxygenation reaction.

Legal Information

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

pictograms

GHS08,GHS05,GHS07

signalword

Danger

hcodes

H302,H314,H360D

pcodes

P260 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338

Hazard Classifications

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

Storage Class

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

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Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

Global Trade Item Number

SKU	GTIN
792527-100G	04061832950914
792527-1KG	04061832950921
792527-500G	04061832950938

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