Methanol

Methanol Property

mp : -98 °C(lit.) bp : 65.4 °C(lit.) density : 0.791 g/mL at 25 °C vapor density : 1.11 (vs air) vapor pressure : 410 mm Hg ( 50 °C) refractive index : n20/D 1.329(lit.) Fp : 52 °F storage temp. : Store at RT. color : <10(APHA) Water Solubility : miscible Merck : 14,5957 BRN : 1098229 CAS DataBase Reference: 67-56-1(CAS DataBase Reference) NIST Chemistry Reference: Methyl alcohol(67-56-1) EPA Substance Registry System: Methanol(67-56-1)

Safety

Hazard Codes : Xn,T,F Risk Statements : 10-20/21/22-68/20/21/22-39/23/24/25-23/24/25-11-40-36-36/38-23/25 Safety Statements : 36/37-7-45-16-24/25-23-24-26 RIDADR : UN 1170 3/PG 2 WGK Germany : 1 RTECS : PC1400000 F : 3-10 HazardClass : 3 PackingGroup : II Hazardous Substances Data: 67-56-1(Hazardous Substances Data)

Methanol Chemical Properties,Usage,Production

Chemical Properties Colorless liquid Usage Meets ACS specifications Usage Suitable for HPLC, spectrophotometry, and some LC-MS applications Usage high purity grade for ICP-MS detection Usage Suitable for volatile organics analysis by GC-MS General Description A colorless fairly volatile liquid with a faintly sweet pungent odor like that of ethyl alcohol. Completely mixes with water. The vapors are slightly heavier than air and may travel some distance to a source of ignition and flash back. Any accumulation of vapors in confined spaces, such as buildings or sewers, may explode if ignited. Used to make chemicals, to remove water from automotive and aviation fuels, as a solvent for paints and plastics, and as an ingredient in a wide variety of products. Air & Water Reactions Highly flammable. Soluble in water in all proportions. Reactivity Profile Methanol reacts violently with acetyl bromide [Merck 11th ed. 1989]. Mixtures with concentrated sulfuric acid and concentrated hydrogen peroxide can cause explosions. Reacts with hypochlorous acid either in water solution or mixed water/carbon tetrachloride solution to give methyl hypochlorite, which decomposes in the cold and may explode on exposure to sunlight or heat. Gives the same product with chlorine. Can react explosively with isocyanates under basic conditions. The presence of an inert solvent mitigates this reaction [Wischmeyer 1969]. A violent exothermic reaction occurred between methyl alcohol and bromine in a mixing cylinder [MCA Case History 1863. 1972]. A flask of anhydrous lead perchlorate dissolved in Methanol exploded when Methanol was disturbed [J. Am. Chem. Soc. 52:2391. 1930]. P4O6 reacts violently with Methanol. (Thorpe, T. E. et al., J. Chem. Soc., 1890, 57, 569-573). Ethanol or Methanol can ignite on contact with a platinum-black catalyst. (Urben 1794). Health Hazard Exposure to excessive vapor causes eye irritation, head- ache, fatigue and drowsiness. High concentrations can produce central nervous system depression and optic nerve damage. 50,000 ppm will probably cause death in 1 to 2 hrs. Can be absorbed through skin. Swallowing may cause death or eye damage. Fire Hazard Behavior in Fire: Containers may explode.

Methanol Preparation Products And Raw materials

Raw materials HEAVY CUT RESIDUE OIL Residuum L(+)-Lactic acid CARBON MONOXIDE tert-Butyl methyl ether Oxygen CARBON DIOXIDE METALLURGICAL COKE Hydrogen Sodium hydroxide Lactic acid 2 DIESEL FUEL METHANE

Preparation Products 1-Chloropinacolone 3'-DIMETHYLAMINOACETOPHENONE Potassium methoxide TRIETHYLENE GLYCOL MONOMETHYL ETHER Vinyltrimethoxysilane METHYL TRICOSANOATE Ethyl 3-(benzylamino)propanoate Diphenyldimethoxysilane 3-Glycidoxypropyltrimethoxysilane 4-Bromobenzyl alcohol 2-Amino-4-methoxypyridine 1,5-NAPHTHALENEDISULFONIC ACID DISODIUM SALT, DIHYDRATE, 98 4-MORPHOLINECARBOXAMIDINE FEMA 2062 2-Thiophenecarboxylic acid hydrazide 2-Methoxy-3-isobutyl pyrazine H-DL-PRO-OME HCL 3,5-Dimethoxybenzyl alcohol 4-(METHOXYCARBONYL)NICOTINIC ACID METHYL HYDROGEN GLUTARATE METHYL 3-AMINOBENZOATE Methyl 3,4-dimethylbenzoate 1-(1,3-DIHYDRO-1-OXOISOBENZOFURAN-3-YL)UREA (1H-IMIDAZOL-2-YL)-METHANOL 2-OXO-6-PHENYL-4-(TRIFLUOROMETHYL)-1,2-DIHYDRO-3-PYRIDINECARBONITRILE 5-Bromo-4,6-dihydroxypyrimidine NICOTINIC ACID HYDRAZIDE 3-Methacryloxypropyltrimethoxysilane METHYL STEARATE TETRAHYDRO-3-FUROIC ACID 2-Quinolinemethanamine Dipropylene glycol monomethyl ether 5-BROMO-2-CHLORO-4-METHOXYPYRIMIDINE 4-Hydroxy-5-fluorpyrimidine 5-METHYL-2-HEXANOL N,N'-BISBENZYLIDENEBENZIDINE Methyl 4-aminobutyrate hydrochloride 3-Chloropropyltrimethoxysilane methylated albumin 3-(METHOXYCARBONYL)PYRIDINE-2-CARBOXYLIC ACID

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