Dimethylamine

CAS No. 124-40-3

Formula: C2H7N
Basic Info

Dimethylamine is an organic compound with the formula (CH3)2NH. This secondary amine is a colorless, flammable gas with an ammonia-like odor. Dimethylamine is commonly encountered commercially as a solution in water at concentrations up to around 40%. In 2005, an estimated 270,000 tons were produced industrially, but it is also found as a natural product.

Formula
C2H7N
Molecular Weight
45.0837
Exact Mass
45.0578
LogP
0.2265
PSA
12.03
Synonyms

Methanamine, N-methyl-

N-methylmethanamine

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Properties
Appearance & Physical State
colourless compressed liquefied gas
Density
0.68
Boiling Point
7ºC
Melting Point
-93ºC
Flash Point
-7ºC
Refractive Index
n20/D 1.37
Stability
Stable. Generally used as a solution in water at concentrations up to around 40%. Extremely flammable in the pure form. Incompatible with strong oxidizing agents.
Storage Condition
Flammables area
Vapor Density
1.55 (vs air)
Vapor Pressure
16.97 psi ( 55 °C)
Safety Info
RTECS
IP8750000
Safety Statements
S16-S26-S29
WGK Germany
2
Risk Statements
R12; R20; R37/38; R41
HS Code
2921110010
RIDADR
UN 2924 3/PG 2
Hazard Class
3
Packing Group
II
Caution Statement
P210; P261; P273; P280; P305 + P351 + P338; P410 + P403
Hazard Codes
Spectrum
NMR Spectrum 1H NMR : Predict
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IR Spectrum IR : liquid film
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Mass Spectrum Mass spectrum (electron ionization)
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ESR Spectrum ESR : UV IRRAD. IN O2 SATURATED CCL4
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Analysis Methods
Kovats' RI, non-polar column, isothermal
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Column Shape
Packed
Active Phase(℃)
Apiezon L
Retention index
405.
Temperature Control
100.
Method
isothermal
Comments
N2, Chromosorb GAW; Column length: 2.7 m
Reference
Golovnya, R.V.Zhuravleva, N.L.Svetlova, N.I.Grigor'eva, D.N.Gas-chromatographic separation of secondary normal alphatic aminesJ. Anal. Chem. USSR (Engl. Transl.)1980, 35, 10, 1280-1285.
Kovats' RI, non-polar column, isothermal
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Column Shape
Packed
Active Phase(℃)
Apiezon L
Retention index
434.
Temperature Control
100.
Method
isothermal
Comments
 
Reference
Golovnya, R.V.Zhuravleva, I.L.Gas Chromatographic Method of Identification of n-Aliphatic Amines Through the Use of Donor-Acceptor Interaction with PhosphateChromatographia1973, 6, 12, 508-513.
Kovats' RI, non-polar column, isothermal
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Column Shape
Packed
Active Phase(℃)
Apiezon L
Retention index
458.
Temperature Control
130.
Method
isothermal
Comments
Teflon-Haloport; Column length: 2.26 m
Reference
Landault, C.Guiochon, G.Separation des amines par chromatographie gaz-liquide en utilisant le teflon comme supportJ. Chromatogr.1964, 13, 327-336.
Kovats' RI, polar column, isothermal
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Column Shape
Packed
Active Phase(℃)
PEG-2000
Retention index
650.
Temperature Control
152.
Method
isothermal
Comments
He, Celite 545 (44-60 mesh); Column length: 3. m
Reference
Anderson, A.Jurel, S.Shymanska, M.Golender, L.Gas-liquid chromatography of some aliphatic and heterocyclic mono- and pollyfunctional amines. VII. Retention indices of amines in some polar and unpolar stationary phasesLatv. PSR Zinat. Akad. Vestis Kim. Ser.1973, 1, 51-63.
Kovats' RI, polar column, isothermal
expand collapse
Column Shape
Packed
Active Phase(℃)
PEG-2000
Retention index
646.
Temperature Control
179.
Method
isothermal
Comments
He, Celite 545 (44-60 mesh); Column length: 3. m
Reference
Anderson, A.Jurel, S.Shymanska, M.Golender, L.Gas-liquid chromatography of some aliphatic and heterocyclic mono- and pollyfunctional amines. VII. Retention indices of amines in some polar and unpolar stationary phasesLatv. PSR Zinat. Akad. Vestis Kim. Ser.1973, 1, 51-63.

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