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792527

Sigma-Aldrich

Imidazole

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

Synonyme(s) :

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

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About This Item

Formule empirique (notation de Hill):
C3H4N2
Numéro CAS:
288-32-4
Poids moléculaire :
68.08
Numéro Beilstein :
103853
Numéro CE :
206-019-2
Numéro MDL:
MFCD00005183
Code UNSPSC :
12352100
ID de substance PubChem :
329768341
Nomenclature NACRES :
NA.21

Qualité

ACS reagent
anhydrous
free-flowing

Niveau de qualité

200

Pression de vapeur

<1 mmHg ( 20 °C)

Gamme de produits

Redi-Dri™

Pureté

≥99%

Forme

solid

Impuretés

≤0.2% water

Résidus de calcination

≤0.1%

pH

9.5-11.0 (25 °C, 5% in H2O)

pKa (25 °C)

6.95

Point d'ébullition

256 °C (lit.)

Pf

88-91 °C (lit.)

Traces de cations

Fe: ≤0.001%

Chaîne SMILES 

c1c[nH]cn1

InChI

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

Clé InChI

RAXXELZNTBOGNW-UHFFFAOYSA-N

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Application

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.      

Excellent pour les tampons compris dans la plage de pH 6,2-7,8

Informations légales

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

Pictogrammes

Health hazardCorrosionExclamation mark
GHS08,GHS05,GHS07

Mention d'avertissement

Danger

Mentions de danger

H302,H314,H360D

Classification des risques

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

Code de la classe de stockage

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

Classe de danger pour l'eau (WGK)

WGK 2

Point d'éclair (°F)

293.0 °F - closed cup

Point d'éclair (°C)

145 °C - closed cup

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Certificats d'analyse (COA)

Lot/Batch Number
SLCM7641
SLCH7487
SLBT7469
SLCJ6393
SLCK7110

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

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

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

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

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