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Sigma-Aldrich

Methanol

≥99.8%, ACS reagent, suitable for EPA 1613

Synonym(s):

Methyl alcohol

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About This Item

Linear Formula:
CH3OH
CAS Number:
67-56-1
Molecular Weight:
32.04
Beilstein/REAXYS Number:
1098229
EC Number:
200-659-6
MDL number:
MFCD00004595
UNSPSC Code:
12352104
eCl@ss:
39020101
PubChem Substance ID:
329751589
NACRES:
NA.21

product name

Methanol, ACS reagent, ≥99.8%

grade

ACS reagent

Quality Level

100
200

agency

suitable for EPA 1613

vapor density

1.11 (vs air)

vapor pressure

410 mmHg ( 50 °C)
97.68 mmHg ( 20 °C)

assay

≥99.8%

form

liquid

autoignition temp.

725 °F

expl. lim.

36 %

impurities

H2SO4, passes test (darkened)
 MnO4- reducers, passes test
≤0.0002 meq/g Titr. base
≤0.0003 meq/g Titr. acid
≤0.001% acetaldehyde
≤0.001% acetone
≤0.001% formaldehyde
≤0.1% water

evapn. residue

≤0.001%

color

APHA: ≤10
clear

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.)

format

neat

SMILES string

CO

InChI

1S/CH4O/c1-2/h2H,1H3

InChI key

OKKJLVBELUTLKV-UHFFFAOYSA-N

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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 alternative to oil and gas to produce hydrocarbon fuels.
Methanol undergoes 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.

Application

Methanol has been used as a solvent for the sodium dodecyl sulfate-polyacrylamide gel electrophoretic (SDS-PAGE) analysis of alkaline protease isoforms isolated from larva of the spotted sand bass (Paralabrax maculatofasciatus). It has been used in the isolation and quantitative determination of carotenes and xanthophylls from Capsicum annum pericarp extracts by HPLC.

signalword

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Flam. Liq. 2 - STOT SE 1

Storage Class

3 - Flammable liquids

wgk_germany

WGK 2

flash_point_f

49.5 °F - closed cup

flash_point_c

9.7 °C - closed cup

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Beyond oil and gas: the methanol economy.
Olah GA.
Angewandte Chemie (International Edition in English), 44(18) (2005)
Development of digestive enzyme activity in larvae of spotted sand bass Paralabrax maculatofasciatus II: electrophoretic analysis.
Alvarez-Gonzalez CA, et al.
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