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34860

Sigma-Aldrich

Methanol

suitable for HPLC, ≥99.9%

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Synonym(s):
Methyl alcohol
Linear Formula:
CH3OH
CAS Number:
Molecular Weight:
32.04
Beilstein:
1098229
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

vapor density

1.11 (vs air)

Quality Level

vapor pressure

410 mmHg ( 50 °C)
97.68 mmHg ( 20 °C)

Assay

≥99.9%

form

liquid

autoignition temp.

725 °F

expl. lim.

36 %

technique(s)

HPLC: suitable
immunofluorescence: suitable

impurities

≤0.0005% non-volatile matter
≤1 ppb fluorescence (quinine) at 254 nm
≤1 ppb fluorescence (quinine) at 365 nm
<0.03% water (Karl Fischer)

evapn. residue

<0.0005%

color

APHA: ≤10

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.)

λ

neat

UV absorption

λ: 205 nm Amax: ≤1.00
λ: 210 nm Amax: ≤0.60
λ: 220 nm Amax: ≤0.30
λ: 230 nm Amax: ≤0.20
λ: 235 nm Amax: ≤0.10
λ: 240 nm Amax: ≤0.10
λ: 260 nm Amax: ≤0.04
λ: 280 nm Amax: ≤0.01
λ: 400 nm Amax: ≤0.01

application(s)

food and beverages

format

neat

SMILES string

CO

InChI

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

InChI key

OKKJLVBELUTLKV-UHFFFAOYSA-N

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This Item
3221332241534885
vibrant-m

34860

Methanol

-
vibrant-m

32213

Methanol

Essential Grade
vibrant-m

322415

Methanol

-
vibrant-m

34885

Methanol

-
assay

≥99.9%

assay

≥99.8% (GC)

assay

99.8%

assay

≥99.9%

application(s)

food and beverages

application(s)

-

application(s)

-

application(s)

food and beverages

impurities

≤0.0005% non-volatile matter, ≤1 ppb fluorescence (quinine) at 365 nm, ≤1 ppb fluorescence (quinine) at 254 nm, <0.03% water (Karl Fischer)

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)

impurities

<0.002% water, <0.005% water (100 mL pkg)

impurities

KMnO4 red. matter (as O), in accordance, ≤0.0005% free alkali (as NH3), ≤0.0005% non-volatile matter, ≤0.001% acetaldehyde, ≤0.001% acetone (GC), ≤0.001% formaldehyde, ≤0.02% water (Karl Fischer), ≤1 ppb fluorescence (quinine) at 254 nm, ≤1 ppb fluorescence (quinine) at 365nm

form

liquid

form

liquid

form

liquid

form

liquid

expl. lim.

36 %

expl. lim.

36 %

expl. lim.

36 %

expl. lim.

36 %

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 (MeOH) has been used in the wholemount immunofluorescence studies of embryonic tissues.
It may be 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.
  • To compose the eluent for the ion-pair reverse-phase HPLC isolation of nucleotides and their decomposition products.
Methanol can be used as a mobile phase in reversed-phase liquid chromatography.

Preparation Note

Product filtered through a 0.2 μm filter

Other Notes

Important notice
  • The article number 34860-4X2.5L-R will be discontinued. Please order the single bottle 34860-2.5L-R which is physically identical with the same exact specifications.
  • The article number 34860-6X1L-R will be discontinued. Please order the single bottle 34860-1L-R which is physically identical with the same exact specifications.

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Legal Information

Pure-Pac is a registered trademark of Merck KGaA, Darmstadt, Germany

Signal Word

Danger

Hazard Classifications

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

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

49.5 °F - closed cup

Flash Point(C)

9.7 °C - closed cup


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High-performance liquid chromatography of thiols and disulfides: dinitrophenol derivatives.
Fariss MW and Reed DJ.
Methods in Enzymology, 143, 101-109 (1987)
Beyond oil and gas: the methanol economy.
Olah GA.
Angewandte Chemie (International Edition in English), 44(18), 2636-2639 (2005)
Review of methanol reforming-Cu-based catalysts, surface reaction mechanisms, and reaction schemes.
Yong ST, et al.
International Journal of Hydrogen Energy, 38(22), 9541-9552 (2013)
Mehmet Nuri Atalar et al.
Life sciences, 231, 116577-116577 (2019-06-19)
Galectin-3 is associated with the process of inflammation and fibrosis. The aim of this study was both to evaluate of galectin-3, methylated arginines and hs-CRP in subjects with type 2 diabetes and prediabetes and to investigate a relation between serum
Catalytic carbon dioxide hydrogenation to methanol: A review of recent studies.
Jadhav SG, et al.
Chemical Engineering Research and Design, 92(11), 2557-2567 (2014)

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