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179957 Sigma-Aldrich

Methanol

Laboratory Reagent, ≥99.6%

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

  •  eCl@ss 39020101

  •  PubChem Substance ID 329751598

  •  NACRES NA.05

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Properties

Related Categories ReagentPlus Solvent Grade Products, ReagentPlus and EMPLURA, ACS and Reagent Grade Solvents, Allium cepa (Onion), Amber Glass Bottles,
Quality Level   100
grade   Laboratory Reagent
vapor density   1.11 (vs air)
vapor pressure   410 mmHg ( 50 °C)
  97.68 mmHg ( 20 °C)
assay   ≥99.6%
form   liquid
autoignition temp.   725 °F
expl. lim.   36 %
impurities   ≤0.01% alkalinity (as NH3)
  ≤0.03% acidity (as HCOOH)
  ≤0.1% water
evapn. residue   ≤0.01%
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.)
storage temp.   room temp
SMILES string   CO
InChI   1S/CH4O/c1-2/h2H,1H3
InChI key   OKKJLVBELUTLKV-UHFFFAOYSA-N

Description

General description

Methanol is an industrially important alcohol. Its thermochemical conversion 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. It participates in the purification step during the synthesis of pyocyanin, a toxic compound found in Pseudomonas aeruginosa.

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 alternative to oil and gas to produce hydrocarbon fuels.

Application

Methanol may be used to compose the binary mixtures with acetonitrile in a study. Experimental evaluation of the values of dielectric constant and dielectric loss of these binary mixtures at microwave frequencies at 300°C has been reported.

Packaging

1, 4, 4×4 L in glass bottle

18, 20 L in steel drum

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

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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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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