The distinctive smell is caused by the presence of triethylamine. Even a small amount of TMA, slightly above 50 ppb, can give the entire product its characteristic odor. Despite the odor, the product can still be used.
34860
Methanol
Methanol
1 of 3 reviewers received a sample product or took part in a promotion
≥99.9%, suitable for immunofluorescence, HPLC
Synonym(s):
Methyl alcohol
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All Photos(2)
About This Item
Linear Formula:
CH3OH
CAS Number:
Molecular Weight:
32.04
Beilstein:
1098229
EC Number:
MDL number:
UNSPSC Code:
41116105
PubChem Substance ID:
NACRES:
NA.21
Assay:
≥99.9%
technique(s):
HPLC: suitable
immunofluorescence: suitable
immunofluorescence: suitable
application(s):
food and beverages
bp:
64.7 °C (lit.)
vapor pressure:
410 mmHg ( 50 °C)
97.68 mmHg ( 20 °C)
97.68 mmHg ( 20 °C)
Pricing and availability is not currently available.
Recommended Products
Product Name
Methanol, suitable for HPLC, ≥99.9%
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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General description
Methanol is an organic solvent that can be synthesized from syngas in the presence of CuO/ZnO/Al2O3 catalysts.[1] 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.[2][3] 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.[4]
Application
Methanol (MeOH) has been used in the wholemount immunofluorescence studies of embryonic tissues.[7]
It may be used in the following studies:
It may be used in the following studies:
- Colony forming unit-fibroblast assay of bone marrow mononuclear cells.[8]
- As solvent for the preparation of extracts of hyphae of Aspergillus for the estimation of gliotoxin by reversed phase-HPLC.[9]
- Immunofluorescence studies.[10]
- To compose the eluent for the ion-pair reverse-phase HPLC isolation of nucleotides and their decomposition products.[11]
Methanol can be used as a mobile phase in reversed-phase liquid chromatography.[12]
Packaging
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.
Legal Information
Pure-Pac is a registered trademark of Merck KGaA, Darmstadt, Germany
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Flam. Liq. 2 - STOT SE 1
Target Organs
Eyes,Central nervous system
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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Product 34860 has an unpleasant fishy odor. What are the possible causes of this odor? Can we still use the product despite the odor?
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What apparatus do you recommend for HPLC solvent filtration?
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The Sigma-Aldrich Vacuum Filtration Assembly gives you all the components you need including: funnel top, fritted glass funnel support, filtration flask, aluminum clamp, and silicone stopper. The Acrodisc Syringe Filters offer high quality filtration for analytical samples, certified for HPLC to ensure low extractable and available in a broad range of membranes to meet sample compatibility requirements.
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What are the options for drying solvents?
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Sigma-Aldrich offers a full range of high-purity solvents with extremely low water levels specifically manufactured for moisture sensitive Organic and Biotech applications. Sigma-Aldrich also carries various drying agents such as molecular sieves, which are typically compatible with organic solvents.
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Can you recommend a Solvent Extractor for organics from aqueous solution?
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Solvent extractors are often used for the quantitative extraction of organics from aqueous solutions and separations in immunoassays. The MIXXOR system has been applied successfully in many laboratory solvent extraction operations and is ideal for the rapid screening of alternative solvents for specific extraction problems.
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What is the Department of Transportation shipping information for this product?
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Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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Why on occasion does Product 34860, Methanol, have an unusual odor? Does it affect the product purity or performance?
1 answer-
Industry research has indicated that unusual odors in methanol are a common problem and stem from low - level mercaptans and / or amines found in the natural gas raw materials used in production. Odors from these types of compounds can be noticeable at low part per million (ppm) levels and have not been shown to have any negative impact on product performance at these concentrations.
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Who do I contact about larger solvent volume needs?
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Email us at [email protected] or visit Sigma-Aldrich Fine Chemicals for development and manufacturing-scale inquiries: [email protected]
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