Description

Methylamine Liquid

Methylamine 40%  solution is a 99% colorless flammable gas liquid, an organic compound with a formula of CH₃NH₂. This colorless gas is a derivative of ammonia, but with one hydrogen atom being replaced by a methyl group. It is the simplest primary amine.

Methylamine is sold as a solution in methanol, ethanol, tetrahydrofuran, or water, or as the anhydrous gas in pressurized metal containers. Industrially, methylamine is transported in its anhydrous form in pressurized railcars and tank trailers. It has a strong odor similar to rotten fish. Methylamine is used as a building block for the synthesis of numerous other commercially available compounds.

Methylamine Production

Methylamine is prepared commercially by the reaction of ammonia with methanol in the presence of an aluminosilicate catalyst. Dimethylamine and trimethylamine are co-produced; the reaction kinetics and reactant ratios determine the ratio of the three products. The product most favored by the reaction kinetics is trimethylamine.

CH₃OH + NH₃ → CH₃NH₂ + H₂O

Properties

Chemical formula: CH3NH2

CAS: 74-89-5

Abbreviations: MMA

Molar mass 31.058 g·mol−1

Appearance: Colorless gas

Odor: Fishy, ammoniacal

Density: 0.6562 g/cm3 (at 25 °C)

Melting point: −93.10 °C; −135.58 °F; 180.05 K

Boiling point: −6.6 to −6.0 °C; 20.0 to 21.1 °F; 266.5 to 267.1 K

Solubility in water 1008 g/L (at 20 °C)

log: P −0.472

Vapor pressure:  186.10 kPa (at 20 °C)

Henry’s law constant (kH):  1.4 mmol/(Pa·kg)

Acidity (pKa):  10.66

Conjugate acid: [CH3NH3]+ (Methylammonium)

Magnetic susceptibility (χ): −27.0·10−6 cm3/mol

Viscosity: 230 μPa·s (at 0 °C)

Dipole moment: 1.31 D

Synonyms:

MMA-50, MMA-40, CH3NH2 , AMINE C1, Methylamin, Metilamine, Aminomethan, ai3-15637-x, MERCURIALIN

Other names

Model Number: Kairunte Methylamine 99% colorless liquid