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49128 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 329757434

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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)
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
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

Price and Availability


Laboratory Gloves
Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN 3263 8 / PGIII
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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