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32213 Sigma-Aldrich

Methanol

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.8% (GC)

Synonym: Methyl alcohol

  • CAS Number 67-56-1

  • Linear Formula CH3OH

  • Molecular Weight 32.04

  •  Beilstein/REAXYS Number 1098229

  •  EC Number 200-659-6

  •  MDL number MFCD00004595

  •  PubChem Substance ID 329754104

  •  NACRES NA.05

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Properties

Related Categories Methanol, Plastic Bottles, Solvent by Type, Solvent Bottles, Solvent Packaging Options,
Quality Level   200
grade   ACS reagent
Agency/Method   reag. ISO
  reag. Ph. Eur.
vapor density   1.11 (vs air)
vapor pressure   410 mmHg ( 50 °C)
  97.68 mmHg ( 20 °C)
grade   puriss. p.a.
assay   ≥99.8% (GC)
form   liquid
autoignition temp.   725 °F
expl. lim.   36 %
application(s)   immunofluorescence: suitable
impurities   ≤0.00005% free alkali (as NH3)
  ≤0.0001% formaldehyde
  ≤0.00025% KMnO4 red. matter (as O)
  ≤0.0005% non-volatile matter
  ≤0.001% acetaldehyde
  ≤0.001% acetone (GC)
  ≤0.05% water (Karl Fischer)
  ≤0.1% ethanol (GC)
refractive index   n20/D 1.329 (lit.)
bp   64.7 °C (lit.)
mp   −98 °C (lit.)
density   0.791 g/mL at 25 °C (lit.)
anion traces   chloride (Cl-): ≤0.5 mg/kg
  sulfate (SO42-): ≤1 mg/kg
cation traces   Al: ≤0.5 mg/kg
  B: ≤0.02 mg/kg
  Ba: ≤0.1 mg/kg
  Bi: ≤0.1 mg/kg
  Ca: ≤0.5 mg/kg
  Cd: ≤0.05 mg/kg
  Co: ≤0.02 mg/kg
  Cr: ≤0.02 mg/kg
  Cu: ≤0.01 mg/kg
  Fe: ≤0.1 mg/kg
  K: ≤0.5 mg/kg
  Li: ≤0.1 mg/kg
  Mg: ≤0.1 mg/kg
  Mn: ≤0.01 mg/kg
  Mo: ≤0.1 mg/kg
  Na: ≤0.5 mg/kg
  Ni: ≤0.02 mg/kg
  Pb: ≤0.02 mg/kg
  Sn: ≤0.1 mg/kg
  Sr: ≤0.1 mg/kg
  Zn: ≤0.1 mg/kg
SMILES string   CO
InChI   1S/CH4O/c1-2/h2H,1H3
InChI key   OKKJLVBELUTLKV-UHFFFAOYSA-N

Description

General description

Methanol is an organic solvent that can be synthesized from syngas in the presence of CuO/ZnO/Al2O3 catalysts. It is an ideal candidate as a hydrogen source in fuel cell technology due to its high H/C ratio, low propensity for soot generation, relatively low reforming temperature and as it exists in liquid state at room temperature. In a direct methanol fuel cell (DMFC), methanol undergoes oxidation with air to generate electricity. The olefins (ethylene or propylene) formed from methanol via MTO (methanol-to-olefins) process, can be an alternate to oil and gas to produce hydrocarbon fuels.

Thermochemical conversion of methanol to C2-C10 hydrocarbons in the presence of shape-selective zeolites has been reported. Its oxidation on Ru-Pt catalyst system by ruthenium ad-atoms has been proposed.

Application

Methanol was used in the following studies:
• Colony forming unit-fibroblast assay of bone marrow mononuclear cells.
• As solvent for the preparation of extracts of hyphae of Aspergillus for the estimation of gliotoxin by reversed phase-HPLC.
• Immunofluorescence studies.

Packaging

In PE-bottles; also available Glass-bottles (Material no. ending with *-GL)

Other Notes

The article number 32213-4X2.5L will be discontinued. Please order the single bottle 32213-2.5L which is physically identical with the same exact specifications.
The article number 32213-4X2.5L-M will be discontinued. Please order the single bottle 32213-2.5L-M which is physically identical with the same exact specifications.
The article number 32213-4X5L will be discontinued. Please order the single bottle 32213-5L which is physically identical with the same exact specifications.
The article number 32213-6X1L will be discontinued. Please order the single bottle 32213-1L which is physically identical with the same exact specifications.

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Target organs 
Eyes
RIDADR 
UN1230 - class 3 - PG 2 - Methanol
WGK Germany 
WGK 2
RTECS 
PC1400000
Flash Point(F) 
49.5 °F - closed cup
Flash Point(C) 
9.7 °C - closed cup
Protocols & Articles

Articles

Pressure-Temperature Calculator for Solvents

*Calculations provide estimated results based on Antoine's Coefficients and their associated temperature range values. Antoine's Coefficients were obtained from the National Institute of Standards an...

Peer-Reviewed Papers
15

References

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