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Methanol Structure

Methanol

Product NameMethanol

CAS67-56-1

CBNumberCB7854099

MFCH4O

MW32.04

EINECS200-659-6

MDL NumberMFCD00004595

MOL File67-56-1.mol

MSDS FileSDS

Chemical Properties

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.)
Flash point 52 °F
storage temp.  2-8°C
solubility  benzene: miscible(lit.)
pka 15.2(at 25℃)
form  Liquid Free From Particulates
Specific Gravity 0.793 (20/20℃)
color  <10(APHA)
Relative polarity 0.762
Odor Faint alcohol odor detectable at 4 to 6000 ppm (mean = 160 ppm)
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).
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

Symbol(GHS)
Signal wordDanger
Hazard statements H225-H301+H311+H331-H370
Precautionary statements P210-P280-P301+P310+P330-P302+P352+P312-P304+P340+P311
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
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
NFPA 704:
3
1 0

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