Methanol CAS#67-56-1
Exceptional Solvent Versatility: Fully miscible with water, alcohols, ethers, ketones, and most organic solvents, making it ideal for chemical synthesis, extraction, and formulation.
High Volatility & Low Boiling Point (64.5°C): Enables rapid evaporation for efficient use in coatings, inks, and cleaning processes, with low energy recovery.
Key Chemical Feedstock: Essential precursor for formaldehyde, acetic acid, biodiesel, and other high-value chemicals, supporting diverse manufacturing sectors.
Cost-Effective Industrial Fuel/Antifreeze: High octane rating and low freezing point (-97.8°C) suit it for fuel blends, antifreeze, and denaturing ethanol, despite flammability risks.
Methanol commonly referred to as "wood alcohol," is an organic compound and the most basic saturated monohydric alcohol. It is a colorless, clear, flammable, volatile, and poisonous liquid. Consuming just 5 to 10 ml can result in blindness, while ingesting a significant quantity may be fatal.
At room temperature, methanol does not corrode metals (with the exception of lead and aluminum) and has a faint alcoholic odor. Its relative density is 0.792 (20/4℃), melting point -97.8℃, boiling point 64.5℃, flash point 12.22℃, autoignition temperature 463.89℃, vapor density 1.11, vapor pressure 13.33 kPa (100 mmHg at 21.2℃), and its vapor-air mixture has an explosive range of 6 to 36.5% (by volume). It is fully miscible with water, ethanol, ether, benzene, ketones, halogenated hydrocarbons, and numerous other organic solvents. Methanol is frequently employed as a solvent, antifreeze, fuel, or neutralizing agent.
Melting point | -98 °C(lit.) |
Boiling point | 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. | 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 |
Odor | Faint alcohol odor detectable at 4 to 6000 ppm (mean = 160 ppm) |
PH | 6.8 (20°C in H2O) |
Flame Color | Pale blue |
Odor Threshold | 33ppm |
explosive limit | 5.5-44%(V) |
Water Solubility | miscible |
λmax | λ: 210 nm Amax: 0.50 |
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) |
IDLA | 6,000 ppm |
