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Methylamine Structure

Methylamine

Chemical Properties

Melting point -93 °C(lit.)
Boiling point -6.3 °C(lit.)
Density  0.785 g/mL at 25 °C
vapor density  1.08 (20 °C, vs air)
vapor pressure  27 psi ( 20 °C)
refractive index  n20/D 1.371
Flash point 61 °F
storage temp.  Store below +30°C.
solubility  highly soluble in water (108g/100g) at 25°C; soluble in alcohol and miscible with ether; HCl salt is soluble in water and absolute alcohol; compound is insoluble in chloroform, acetone, ether, and ethyl acetate
pka 10.63(at 25℃)
form  Gas
Specific Gravity 0.901 (20℃/4℃) (40% Soln.)
PH 14 (H2O, 20°C)
Odor Threshold 0.035ppm
explosive limit 4.9-20.8%
Water Solubility  Miscible with water, ethanol, benzene, acetone and ether.
Merck  14,6014
BRN  741851
Henry's Law Constant (x 10-5 atm?m3/mol): 1.11 at 25 °C (Christie and Crisp, 1967)
Exposure limits TLV-TWA 10 ppm (~12.3 mg/m3)(ACGIH, MSHA, and OSHA); IDLH 100 ppm (NIOSH).
Dielectric constant 10.0(18℃)
Stability Stable. Highly flammable. Note wide explosion limits. Incompatible with oxidizing agents, acids, alkalies, alkaline earth metals, copper and its alloys, zinc and its alloys.
LogP -0.570
CAS DataBase Reference 74-89-5(CAS DataBase Reference)
EPA Substance Registry System Methylamine (74-89-5)

Safety Information

Hazard Codes  F+,Xn,C,F,T
Risk Statements  12-20-37/38-41-34-20/22-11-39/23/24/25-36/37/38-23/24/25-40-19
Safety Statements  7-16-26-36/37-45-29-36/37/39-3/7-3-39-33
RIDADR  UN 3286 3/PG 2
WGK Germany  2
RTECS  PF6300000
4.5-31
Autoignition Temperature 806 °F
TSCA  Yes
DOT Classification 2.1 (Flammable gas)
HazardClass  3
PackingGroup  II
HS Code  29211100
Hazardous Substances Data 74-89-5(Hazardous Substances Data)
Toxicity LD50 orally in rats: 100-200 mg/kg (Kinney); LC50 in rats: 0.448 ml/l (Sarkar, Sastry)
IDLA 100 ppm

MSDS

Usage And Synthesis