N,N'-Dimethyl-1,3-propanediamine Chemical Properties

Melting point:

-78.72°C

Boiling point:

145 °C(lit.)

Density 

0.817 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.438(lit.)

Flash point:

69 °F

storage temp. 

Storage temp. -20°C

pka

10.86±0.10(Predicted)

form 

Liquid

color 

Clear colorless

Water Solubility 

Fully miscible in water, 1e+006 mg/L @ 25°C (est).

BRN 

773668

InChI

InChI=1S/C5H14N2/c1-6-4-3-5-7-2/h6-7H,3-5H2,1-2H3

InChIKey

UQUPIHHYKUEXQD-UHFFFAOYSA-N

SMILES

C(NC)CCNC

LogP

-0.122 (est)

CAS DataBase Reference

111-33-1(CAS DataBase Reference)

EPA Substance Registry System

1,3-Propanediamine, N,N'-dimethyl- (111-33-1)

Safety Information

Hazard Codes 

F,C,Xi

Risk Statements 

11-34

Safety Statements 

26-36/37/39-45-25

RIDADR 

UN 2733 3/PG 2

WGK Germany 

3

F 

3-10-34

TSCA 

TSCA listed

HazardClass 

3

PackingGroup 

II

HS Code 

29212900

Storage Class

3 - Flammable liquids

Hazard Classifications

Flam. Liq. 2
Skin Corr. 1B

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

N,N'-Dimethyl-1,3-propanediamine Usage And Synthesis

Chemical Properties

clear colorless liquid

Uses

Employed as a pharmaceutical intermediate. It is an important raw material used in organic synthesis, agrochemicals and dye stuffs.

Synthesis

Dimethylaminoacrylonitrile was continuously prepared from dimethylamine and acrylonitrile in a fixed-bed with a molar ratio of dimethylamine to acrylonitrile of 10:1-1:1, a reaction temperature of 10-120??C, and an airspeed of 0.1-10 h-1, and the conversion of acrylonitrile and the selectivity of dimethylaminoacrylonitrile were both greater than 99%. The dimethylaminoacrylonitrile intermediate obtained directly enters the second fixed-bed reactor for hydrogenation without any purification treatment, and the hydrogenation pressure is 3-10MPa, with Raney-Ni catalyst, equipped with an alcohol solution co-catalyst of 0.1%-10% alkali, and the yield of N,N-dimethyl-1,3-propanediamine is not less than 98%, which is simple in preparation, stable in quality, energy-saving, environmentally friendly, and suitable for large-scale production. The process is simple, stable in quality, energy-saving and environmentally friendly, and suitable for large-scale production.

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