Documents
56750
Imidazole
puriss. p.a., ≥99.5% (GC)
Recommended Products
vapor pressure
<1 mmHg ( 20 °C)
Quality Level
grade
puriss. p.a.
Assay
≥99.5% (GC)
form
flakes
powder or crystals
ign. residue (900 °C)
≤0.1%
pH
9.5-11.0 (25 °C, 50 mg/mL in H2O)
pKa (25 °C)
6.95
bp
256 °C (lit.)
mp
88-91 °C (lit.)
88-91 °C
solubility
alcohol: soluble(lit.)
chloroform: soluble(lit.)
pyridine: soluble(lit.)
water: soluble(lit.)
anion traces
chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg
cation traces
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg
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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This Item | 56749 | I5513 | I2399 |
|---|---|---|---|
| form flakes, powder or crystals | form powder or crystals | form crystalline powder | form - |
| bp 256 °C (lit.) | bp 256 °C (lit.) | bp 256 °C (lit.) | bp 256 °C (lit.) |
| mp 88-91 °C (lit.) | mp 88-91 °C (lit.) | mp 88-91 °C (lit.) | mp 88-91 °C (lit.) |
| solubility alcohol: soluble(lit.), chloroform: soluble(lit.), pyridine: soluble(lit.), water: soluble(lit.) | solubility H2O: 0.1 M at 20 °C, clear, colorless | solubility water: 500 mg/mL, clear, colorless to very faintly yellow | solubility - |
| Quality Level 200 | Quality Level 200 | Quality Level - | Quality Level 200 |
General description
Application
- For the silylation of alcohols, carboxylic acids, and amines in the presence of silyl chloride in DMF.
- In the peptide coupling using the triphenyl phosphite.
- To prepare acid chlorides from the corresponding carboxylic acids and phosgene.
It can also be used in the following reactions:
- Imidazole-PPh3/I2 catalytic system used in the conversion of alcohols into iodides
- Imidazole-PPh3/I2 is used in the diol deoxygenation reaction.
Other Notes
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1C
Storage Class Code
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
Personal Protective Equipment
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