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792527

Sigma-Aldrich

Imidazolo

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

Sinonimo/i:

1,3-diaza-2,4-ciclopentadiene, Gliossalina

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About This Item

Formula empirica (notazione di Hill):
C3H4N2
Numero CAS:
288-32-4
Peso molecolare:
68.08
Beilstein:
103853
Numero CE:
206-019-2
Numero MDL:
MFCD00005183
Codice UNSPSC:
12352100
ID PubChem:
329768341
NACRES:
NA.21

Grado

ACS reagent
anhydrous

Livello qualitativo

200

Tensione di vapore

<1 mmHg ( 20 °C)

Nome Commerciale

Redi-Dri™

Saggio

≥99%

Forma fisica

solid

Qualità

free-flowing

Impurezze

≤0.2% water

Residuo alla calcinazione

≤0.1%

pH

9.5-11.0 (25 °C, 5% in H2O)

pKa (25 °C)

6.95

P. eboll.

256 °C (lit.)

Punto di fusione

88-91 °C (lit.)

Cationi in tracce

Fe: ≤0.001%

Stringa SMILE

c1c[nH]cn1

InChI

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

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Applicazioni

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.      

Ottimo per tamponi nell′intervallo di pH 6,2-7,8

Note legali

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

Avvertenze

Danger

Indicazioni di pericolo

H302,H314,H360D

Classi di pericolo

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

Codice della classe di stoccaggio

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

Classe di pericolosità dell'acqua (WGK)

WGK 2

Punto d’infiammabilità (°F)

293.0 °F - closed cup

Punto d’infiammabilità (°C)

145 °C - closed cup

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Certificati d'analisi (COA)

Lot/Batch Number
SLCH7487
SLCH0511
SLCG0769
SLBT7469
WXBD1467V

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1336500

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Imidazole hydrochloride

Sigma-Aldrich

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Imidazolo Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1180

Imidazolo

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

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