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322415

Sigma-Aldrich

Methanol

anhydrous, 99.8%

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

grade

anhydrous

Quality Level

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 %

technique(s)

tissue processing: suitable

impurities

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

evapn. residue

<0.0003%

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.)

SMILES string

CO

InChI

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

InChI key

OKKJLVBELUTLKV-UHFFFAOYSA-N

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General description

Methanol is an industrial organic solvent commonly used in organic synthesis. It is being considered as a potential hydrogen source in fuel cell technology due to its high H/C ratio, low propensity for soot generation, relatively low reforming temperature and its liquid state at room temperature.[22][23] 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.[24]

Application

Methanol has been used for fixing the tissues during preparation of thin giemsa stained blood smears.[77] It has been used in the purification step during the synthesis of pyocyanin, a toxic compound found in Pseudomonas aeruginosa.[78]
Methanol has been used in following applications:
  • Used for the synthesis and purification of pyocyanin, spectrophotometric estimation of pyocyanin concentration, and the calculation of pyocyanin molar concentration using spectrophotometer absorption data.
[48]
  • Used as a component of staining solution used in karyotyping.
  • [40]
  • Used as a component of staining solution to stain cell colonies in colony formation assay.
  • [62]

    Packaging

    100, 12×100 mL in Sure/Seal™
    1, 6×1, 2, 4×2 L in Sure/Seal™
    18 L in Pure-Pac™ 1
    20 L in Pure-Pac™ 2
    200 L in Pure-Pac™ 1

    Other Notes

    Pure-Pac® II containers require the Micromatic MacroValve coupler for dispensing solvents, Z560723.

    Legal Information

    Pure-Pac is a registered trademark of Sigma-Aldrich Co. LLC

    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

    Personal Protective Equipment

    dust mask type N95 (US), Eyeshields, Gloves

    Certificate of Analysis

    Enter Lot Number to search for Certificate of Analysis (COA).

    Certificate of Origin

    Enter Lot Number to search for Certificate of Origin (COO).

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