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Methanol CAS#67-56-1
CAS Number: 67-56-1
Chemical Formula:CH4O
Synonyms:
METHYL RED MIXED SOLUTION
METHYL RED SOLUTION R
METHYL RED, SPIRIT SOLUBLE
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Appearance: Liquid
Methanol CAS#67-56-1
Methanol is the simplest fatty alcohol. It is a colorless, flammable, irritating liquid with a boiling point of 64.7°C, a melting point of -93.90°C, and a relative density of 0.7913. Soluble in water and most organic solvents. Its severe toxicity can damage the optic nerve. Once swallowed, it can make the eyes blind and even cause death.
Methanol has the general properties of a primary aliphatic alcohol. The three hydrogen atoms on a carbon atom with a hydroxyl group can be oxidized, orderly generating formaldehyde, formic acid, and carbon dioxide. Therefore, it is largely used in the synthesis of formaldehyde. Methanol is easily converted into important organic synthesis intermediates such as methyl carboxylate, methyl chloride and methylamine, and it is also applied as important organic solvents, extraction agents and alcohol denaturants.
| Methanol Chemical Properties |
| Melting point | -97,8°C |
| Melting point | -98 °C(lit.) |
| Boiling point | 64,7°C |
| Boiling point | 65.4 °C(lit.) |
| density | 0.791 g/mL at 25 °C |
| density | d = 0,89 |
| vapor density | 1.11 (vs air) |
| vapor pressure | 410 mm Hg ( 50 °C) |
| refractive index | n |
| Fp | 52 °F |
| storage temp. | 2-8°C |
| solubility | benzene: miscible(lit.) |
| pka | 15.2(at 25℃) |
| form | Liquid Free From Particulates |
| color | <10(APHA) |
| Specific Gravity | 0.793 (20/20℃) |
| Relative polarity | 0.762 |
| PH | 6.8 (20°C in H2O) |
| Odor | Faint alcohol odor detectable at 4 to 6000 ppm (mean = 160 ppm) |
| Flame Color | Pale blue |
| explosive limit | 5.5-44%(V) |
| Odor Threshold | 33ppm |
| Water Solubility | miscible |
| λmax | λ: 210 nm Amax: 0.50 λ: 220 nm Amax: 0.30 λ: 230 nm Amax: 0.15 λ: 235 nm Amax: 0.10 λ: 240 nm Amax: 0.05 λ: 260 nm Amax: 0.01 λ: 400 nm Amax: 0.01 |
| Merck | 14,5957 |
| BRN | 1098229 |
| Henry's Law Constant | 4.99 at 25 °C (headspace-GC, Gupta et al., 2000) |
| Exposure limits | TLV-TWA (200 ppm) (ACGIH), 260mg/m3, 1040mg/m3 (800 ppm) 15minutes (NIOSH); STEL 310mg/m3 (250 ppm); IDLH 25,000 ppm (NIOSH). |
| Dielectric constant | 33.6（20℃） |
| LogP | -0.770 |
| Surface tension | 22.22mN/m at 298.15K |
| Surface tension | 22.7mN/m at 20°C |
| 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) |
| Absorption | in accordance |
| Safety Information |
| 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 |
| OEB | A |
| OEL | TWA: 200 ppm (260 mg/m3), STEL: 250 ppm (325 mg/m3) [skin] |
| WGK Germany | 1 |
| RTECS | PC1400000 |
| F | 3-10 |
| Autoignition Temperature | 385 °C |
| TSCA | Yes |
| HS Code | 2905 11 00 |
| HazardClass | 3 |
| PackingGroup | II |
| Hazardous Substances Data | 67-56-1(Hazardous Substances Data) |
| Toxicity | LD50 oral (rat) 5628 mg/kg LD50 skin (rabbit) 15,840 mg/kg LC50 inhal (rat) >145,000 ppm (1 h) PEL (OSHA) 200 ppm (260 mg/m3) TLV-TWA (ACGIH) 200 ppm (260 mg/m3)—skin STEL (ACGIH) 250 ppm (328 mg/m3) |
| IDLA | 6,000 ppm |
Product Applicaion of Methanol CAS#67-56-1
Methanol is an important chemical raw material for fine chemicals. Its carbonylation at 3.5 MPa and 180-200° C in the presence of catalyst can produce acetic acid and further produce acetic anhydride. It reacts with syngas to prepare vinyl acetate in the presence of catalyst; reacts with isobutylene to produce tert-butyl methyl ether; prepare dimethyl oxalate through oxidization and carbonylation, and a further hydrogenation to produce ethylene glycol; reacts with toluene under catalyst and simultaneous oxidization to produce phenylethyl alcohol. It can be used as a good solvent, as a pesticide raw material, as an antifreeze agent, as a fuel and fuel additive (this is receiving increasing attention in environmental protection field). It is the main raw material in the preparation of formaldehyde, the raw material in medicine and spices production, a solvent in dyes and paint industries, the raw material in preparation of methanol single cell protein and synthesis of methyl ester.
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