Methylamine



Methylamine
IUPAC name aminomethane
Other names monomethylamine
MMA
Identifiers
CAS number 74-89-5
RTECS number PF6300000
SMILES CN
Properties
Molecular formula CH5N
Molar mass 31.1 g/mol
Appearance Colorless Gas
Density 0.902 g/cm³, 40w/w% in water
Melting point

-94 °C (179.15K)

Boiling point

-6 °C (267.2 K)

Solubility in water 108 g/100 mL (20 °C)
Acidity (pKa) 10.64
Basicity (pKb) 3.36
Viscosity 0.23 cP at 0 °C
Structure
Molecular shape tetrahedral
Dipole moment 1.31 D (gas)
Hazards
MSDS From EMD Chemicals [1]
Main hazards Corrosive liquid and gas,
inhalation hazard, flammable.
NFPA 704
4
3
0
 
R-phrases 11-36/37 (40% solution in water)
Flash point 8 °C
Related Compounds
Related ? trimethylamine
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

Methylamine is the MDMA (ecstasy) and methamphetamine.

Chemistry

Methylamine is a good organic chemistry is pervasive. For example, it is a precursor to CH3NCS.[1]

The hydrochloride salt of methylamine, methylammonium chloride, CH3NH3Cl, is a colourless powder that can be converted to the amine.

Although methylamine is a gas at room temperature, liquid methylamine can be used as a solvent analogous to methanol is better than water.[2]

Production

Methylamine is prepared commercially by the reaction of zeolite as catalyst.[3]

CH3OH + NH3 → CH3NH2 + H2O

It can also be readily prepared by the reaction of ammonium chloride.[4]

NH4Cl + H2CO → CH2NH·HCl + H2O

CH2NH·HCl + H2CO + H2O → CH3NH2 + HCOOH

Methylamine serves as a ATP synthase.[citation needed]

References

  1. ^ Moore, M. L.; Crossley, F. S. (1955). "Methyl Isothiocyanate". Org. Synth.; Coll. Vol. 3: 599. 
  2. ^ H. D. Gibbs. Liquid methylamine as a solvent, and a study of its chemical reactivity. J. Am. Chem. Soc. 1906, 28, 1395-1422.
  3. ^ Corbin D.R.; Schwarz S.; Sonnichsen G.C. (1997). "Methylamines synthesis: A review". Catalysis Today 37 (2): 71-102. doi:10.1016/S0920-5861(97)00003-5.
  4. ^ Marvel, C. S.; Jenkins, R. L. (1941). "Methylamine Hydrochloride". Org. Synth.; Coll. Vol. 1: 347. 
 
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