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792527

Sigma-Aldrich

Imidazol

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

Synonym(e):

1,3-Diaza-2,4-cyclopentadien, Glyoxalin

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About This Item

Empirische Formel (Hill-System):
C3H4N2
CAS-Nummer:
288-32-4
Molekulargewicht:
68.08
Beilstein:
103853
EG-Nummer:
206-019-2
MDL-Nummer:
MFCD00005183
UNSPSC-Code:
12352100
PubChem Substanz-ID:
329768341
NACRES:
NA.21

Qualität

ACS reagent
anhydrous
free-flowing

Qualitätsniveau

200

Dampfdruck

<1 mmHg ( 20 °C)

Produktlinie

Redi-Dri™

Assay

≥99%

Form

solid

Verunreinigungen

≤0.2% water

Glührückstand

≤0.1%

pH-Wert

9.5-11.0 (25 °C, 5% in H2O)

pKa (25 °C)

6.95

bp

256 °C (lit.)

mp (Schmelzpunkt)

88-91 °C (lit.)

Kationenspuren

Fe: ≤0.001%

SMILES String

c1c[nH]cn1

InChI

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

InChIKey

RAXXELZNTBOGNW-UHFFFAOYSA-N

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Anwendung

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.      

Hervorragend geeignet für Puffer im pH-Bereich von 6,2–7,8

Rechtliche Hinweise

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

Signalwort

Danger

Gefahreneinstufungen

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

Lagerklassenschlüssel

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

WGK

WGK 2

Flammpunkt (°F)

293.0 °F - closed cup

Flammpunkt (°C)

145 °C - closed cup

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
SLCH7487
SLCH0511
SLCG0769
SLBT7469
WXBD1467V

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Imidazol United States Pharmacopeia (USP) Reference Standard

USP

1336500

Imidazol

Imidazol European Pharmacopoeia (EP) Reference Standard

I0086000

Imidazol

Imidazol -hydrochlorid

Sigma-Aldrich

I3386

Imidazol -hydrochlorid

Imidazol Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1180

Imidazol

Imidazol-Pufferlösung BioUltra, 1&#160;M in H2O

Sigma-Aldrich

68268

Imidazol-Pufferlösung

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

Millipore

4015

Imidazol

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