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56750 Sigma-Aldrich

Imidazole

puriss. p.a., ≥99.5% (GC)

Synonym: 1,3-Diaza-2,4-cyclopentadiene, Glyoxaline

  • CAS Number 288-32-4

  • Empirical Formula (Hill Notation) C3H4N2

  • Molecular Weight 68.08

  •  Beilstein Registry Number 103853

  •  EC Number 206-019-2

  •  MDL number MFCD00005183

  •  PubChem Substance ID 57651598

  •  eCl@ss 39161001

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, I-N, Puriss p.a., Puriss p.a. More...
vapor pressure   <1 mmHg ( 20 °C)
InChI Key   RAXXELZNTBOGNW-UHFFFAOYSA-N
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

Description

Application

Excellent for buffers in the range of pH 6.2-7.8

Other Notes

For titration of aspartic acid and glutamic acid

Packaging

1 kg in poly bottle

100, 500 g in poly bottle

Price and Availability

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN 3263 8 / PGII
WGK Germany 
2
RTECS 
NI3325000
Flash Point(F) 
293 °F
Flash Point(C) 
145 °C
Protocols & Articles
Peer-Reviewed Papers
15

References

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