3-dimethylaminopropylamine (3-dimethylaminopropylamine) is also known as N,N-dimethylaminopropylamine, with a molecular formula of C 5 H 14 N 2 , a molecular weight of 88.
17, and a structural formula of
1.
Product performance
Appearance is a colorless and transparent liquid; this product is highly toxic and strongly irritating to the skin; it is alkaline and can react with acid to generate corresponding salts; relative density d 4 30 0.
8100, boiling point 123°C, freezing point -70°C, lower than the freezing point It forms a glass body with a refractive index n D 25 1.
4328; it is soluble in water and most organic solvents
.
2.
Production principle
Acrylonitrile reacts with dimethylamine to produce dimethylaminopropionitrile
.
The dimethylaminopropionitrile is hydrogenated with methanol as a solvent and Ni ( supported on Al 2 O 3 ) as a catalyst to obtain dimethylaminopropylamine
3.
Process flow
4.
Technical formula (kg/t)
5.
Main equipment
Reactor (addition), fractionation tower, high pressure reactor (hydrogenation), filter, fractionation tower, storage tank
.
6.
Production process
Add acrylonitrile to the kettle, stir, and pass a cooling medium in the jacket to cool the material below room temperature
.
While stirring, add dimethylamine (40% concentration) dropwise
The hydrogenation reaction uses methanol as the solvent
.
The 3-dimethylaminopropionitrile prepared above was dissolved in an appropriate amount of methanol, put into the autoclave, and Ni-A1 catalyst (solid particles) was added
7.
Product Standard
8.
Product use
This product is used as a curing agent for epoxy resin, a brightener for non-cyanide electroplating, and it is also used for organic synthesis, synthetic dyes and the manufacture of ion exchange resins
.
9.
Safety measures
(1) This product is highly toxic, and the raw material dimethylaminopropionitrile is toxic and has a strong irritation to the skin
.
Production equipment should be sealed to prevent running, leaking, and leaking
(2) Packed in iron drums, stored in a cool and ventilated place, away from fire
.
Store and transport in accordance with toxic and flammable chemicals regulations
Related Links: Product Standards and Uses of 2,5-Dimethoxyaniline
