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792527

Sigma-Aldrich

Imidazol

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

Sinónimos:

1,3-Diaza-2,4-ciclopentadieno, Glioxalina

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About This Item

Fórmula empírica (notación de Hill):
C3H4N2
Número de CAS:
288-32-4
Peso molecular:
68.08
Beilstein/REAXYS Number:
103853
EC Number:
206-019-2
MDL number:
MFCD00005183
UNSPSC Code:
12352100
PubChem Substance ID:
329768341
NACRES:
NA.21

grade

ACS reagent
anhydrous

Quality Level

200

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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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.      

Excelente para tampones en el intervalo de pH 6,2 - 7,8

Legal Information

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

signalword

Danger

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_germany

WGK 2

flash_point_f

293.0 °F - closed cup

flash_point_c

145 °C - closed cup

Elija entre una de las versiones más recientes:

Certificados de análisis (COA)

Lot/Batch Number
SLCM7641
SLCH7487
SLBT7469
SLCJ6393
SLCK7110

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Imidazol buffer substance ACS

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1.04716

Imidazol

Imidazol United States Pharmacopeia (USP) Reference Standard

USP

1336500

Imidazol

Imidazol European Pharmacopoeia (EP) Reference Standard

I0086000

Imidazol

Imidazole hydrochloride

Sigma-Aldrich

I3386

Imidazole hydrochloride

Imidazol Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1180

Imidazol

Imidazole buffer Solution BioUltra, 1&#160;M in H2O

Sigma-Aldrich

68268

Imidazole buffer Solution

Imidazole ULTROL&#174; Grade, &#8805;99% (1H-NMR), useful in pH range 6.2-7.8

Millipore

4015

Imidazole

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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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