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About This Item
Product Name
Imidazole, puriss. p.a., ≥99.5% (GC)
InChI key
RAXXELZNTBOGNW-UHFFFAOYSA-N
InChI
1S/C3H4N2/c1-2-5-3-4-1/h1-3H,(H,4,5)
SMILES string
c1c[nH]cn1
vapor pressure
<1 mmHg ( 20 °C)
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.)
Quality Level
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
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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
signalword
Danger
hcodes
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
flash_point_f
293.0 °F - closed cup
flash_point_c
145 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Regulatory Listings
Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.
288-32-4
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