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METHANE Structure

METHANE

  • Product NameMETHANE
  • CAS74-82-8
  • CBNumberCB9374483
  • MFCH4
    Lewis structure
  • MW16.04
  • EINECS200-812-7
  • MDL NumberMFCD00008279
  • MOL File74-82-8.mol
  • MSDS FileSDS

Chemical Properties

Melting point −183 °C(lit.)
Boiling point −161 °C(lit.)
Density  0.716 g/mL at 25 °C(lit.)
vapor density  0.55 (vs air)
refractive index  1.0004
Flash point -188 ºC
form  gas
pka 48(at 25℃)
Odor odorless
explosive limit 15%
Water Solubility  24.4mg/L(25 ºC)
Merck  13,5979
BRN  1718732
Dielectric constant 1.7(-173℃)
Stability Stable. Extremely flammable - note low flash point; mixtures with air constitute an explosion hazard. Reacts violently with interhalogens. Incompatible with strong oxidizing agents, halogens, interhalogens, oxygen.
CAS DataBase Reference 74-82-8(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII OP0UW79H66
EPA Substance Registry System Methane (74-82-8)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H220-H280
Precautionary statements P210-P377-P381-P410+P403
Hazard Codes  F+
Risk Statements  12
Safety Statements  9-16-33
RIDADR  UN 1971 2.1
WGK Germany  -
RTECS  PA1490000
4.5-31
Autoignition Temperature 998 °F
DOT Classification 2.1 (Flammable gas)
HazardClass  2.1
Hazardous Substances Data 74-82-8(Hazardous Substances Data)
NFPA 704:
4
3 0

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