676780

Metanolo

≥99.8%, ACS reagent, suitable for HPLC

• Sinonimo/i: Alcol metilico
• Formula condensata: CH₃OH
• Numero CAS: 67-56-1
• Peso molecolare: 32.04
• Beilstein: 1098229
• Numero CE: 200-659-6
• Numero MDL: MFCD00004595
• Codice UNSPSC: 12352104
• ID PubChem: 329760653
• NACRES: NA.05

Proprietà

• Nome del prodotto: Metanolo, ACS reagent, ≥99.8%
• Grado: ACS reagent
• Livello qualitativo: 200
• Densità del vapore: 1.11 (vs air)
• Tensione di vapore: 410 mmHg ( 50 °C); 97.68 mmHg ( 20 °C)
• Saggio: ≥99.8%
• Stato: liquid
• Temp. autoaccensione: 725 °F
• Limite di esplosione: 36 %
• tecniche: HPLC: suitable
• Impurezze: 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
• Residuo dopo evaporazione: ≤0.001%
• Colore: clear; APHA: ≤10
• Indice di rifrazione: n20/D 1.329 (lit.)
• P. ebollizione: 64.7 °C (lit.)
• Punto di fusione: −98 °C (lit.)
• Solubilità: benzene: miscible(lit.); ethanol: miscible(lit.); water: miscible(lit.)
• Densità: 0.791 g/mL at 25 °C (lit.)
• Formato: neat
• Stringa SMILE: CO
• InChI: 1S/CH4O/c1-2/h2H,1H3; OKKJLVBELUTLKV-UHFFFAOYSA-N

Descrizione

Descrizione generale

Methanol (MeOH) is an organic solvent with a wide range of industrial applications. It is the main component of lithium batteries.[1] It can be prepared by hydrogenation of CO₂ under various conditions.[2][3][4][5] MeOH is a toxic alcohol employed for denaturing ethyl alcohol.[1] A study reports the preparation of biodiesel from canola oil using methanol under supercritical conditions.[6]

Methanol is an alcohol. Its thermochemical conversion to C₂-C₁₀ hydrocarbons in the presence of shape-selective zeolites has been reported.[7] Its oxidation on Ru-Pt catalyst system by ruthenium ad-atoms has been proposed.[8]

Applicazioni

Methanol has been used during colony-forming unit (CFU) assay and histochemical staining.[9]
Methanol may be used as:

• A solvent for cleaning the coverslips before silanization for DNA combing.[10]
• An additive to improve the octane number of gasoline.[11]
• A liquid fuel in direct methanol fuel cells (DMFCs).
• A solvent to synthesize methyl levulinate by acid catalyzed conversion of 5-hydroxymethylfurfural (HMF) and furfuryl alcohol (FA).[12]
• A reactant to prepare dimethylcarbonate by reacting with CO₂ in the presence of graphene oxide-bound octahedral molybdenum cluster (GO-Cs₂Mo₆Brⁱ₈Br^a₆).[13]

Methanol may be used 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).[14] It may be used in the isolation and quantitative determination of carotenes and xanthophylls from Capsicum annum pericarp extracts by HPLC.[15]

Informazioni sulla sicurezza

• Pittogrammi: GHS02,GHS06,GHS08
• Avvertenze: Danger
• Indicazioni di pericolo: H225,H301 + H311 + H331,H370
• Consigli di prudenza: P210 - P233 - P280 - P301 + P310 - P303 + P361 + P353 - P304 + P340 + P311
• Classi di pericolo: Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Flam. Liq. 2 - STOT SE 1
• Organi bersaglio: Eyes,Central nervous system
• Codice della classe di stoccaggio: 3 - Flammable liquids
• Classe di pericolosità dell'acqua (WGK): WGK 2
• Punto d’infiammabilità (°F): 49.5 °F - closed cup
• Punto d’infiammabilità (°C): 9.7 °C - closed cup