CAS number: 109-55-7

English name: 3-Dimethylaminopropylamine

English alias: DMAPA; DIMETHYLAMINOPROPYLAMINE; N,N-Dimethyl-1,3-propanediamine; DMPDA; 3-Aminopropyldimethylamine; 3-DIMETHYLAMINO-1-PROPYLAMINE; N,N-Dimethylaminopropylamine; N,N-DIMETHYLTRIMETHYLENEDIAMINE; FENTAMINE DMAPA; 3-Dimethylaminopopylamine

Chinese name: N, N-dimethyl-1,3-propanediamine

Chinese alias: Dimethylpropanediamine; Dimethylaminopropylamine; 3-diaminopropane; Dimethylaminopropanediamine; 3-dimethylaminopropylamine; Supply DMAPA; BASF DMAPA; Propanediamine, 1,3-propanediamine; N. N-dimethylaminopropylamine; 3-dimethylamino-1-propylamine

CBNumber：CB00125544

Molecular formula: C5H14N2

Molecular weight: 102.18

CAS 109-55-7 corresponds to N, N-dimethyl-1,3-propanediamine (DMAPA), with the molecular formula C ₅ H ₁ N ₂ and a molecular weight of 102.18. It is a bifunctional organic amine intermediate. ‌‌

🧪  Basic properties

Appearance: Colorless to slightly yellow transparent liquid with a pungent ammonia odor.

Boiling point: 133 ℃ (some sources also state 129.5 ℃)

Flash point: 32 ℃ (closed cup), classified as flammable liquid.

Density: 0.812 g/mL (25 ℃)

Solubility: It is miscible with polar solvents such as water, ethanol, and acetone, and the aqueous solution is strongly alkaline (pH ≈ 12.7).

Structural characteristics: One end of the molecule is a primary amino group (- NH ₂), and the other end is a tertiary amino group (- N (CH3) ₂), with high reactivity.

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🏭  main purpose

Epoxy resin curing agent: It combines the functions of curing agent and accelerator, with a general dosage of 2-6 parts, used for laminates, castings, adhesives, etc.

Polyurethane catalyst: As a highly active aliphatic amine, it accelerates foaming and curing, enhances foam toughness, and is suitable for furniture and insulation material production.

Surfactant raw materials: synthetic cocoamide propyl betaine, palmitoymide dimethyl propylamine isothermal and personal care product ingredients.

Other intermediates: used for the production of dyes, ion exchange resins, cyanide free zinc plating additives, fiber and leather processing agents, lubricant additives, and intermediates for the fungicide Frosmovir.

Product Codes for DMAPA (CAS 109-55-7)

Chemical properties

Colorless and transparent liquid. Soluble in water and organic solvents.

Usage

Widely used in the manufacture of cosmetic raw materials, such as palmitoylide dimethyl propylamine, cocoamide propyl betaine, mink oil amide propyl amine, etc

Usage

N. N-dimethyl-1,3-propanediamine is an intermediate of the fungicide fipronil.

Usage

Used as an organic synthesis agent, it is used to produce dyes, ion exchange resin, epoxy resin recycling agents, oil and odorless electrical additives, fiber and leather treatment agents, and face killing agents. This product contains both primary and tertiary groups in its molecule, and is used as an epoxy crosslinking agent and a crosslinking agent

Promoters have two functions. Mainly used for laminates, castings, adhesives, etc., the general dosage is 2-6 parts.

Usage

Used for organic synthesis. Epoxy resin curing agent.

production method

Starting from dimethylamino propylamine [1738-25-6], hydrogenation and methanol were carried out in the presence of NLA catalyst, followed by filtration and distillation to obtain the final product of 3-dimethylaminopropylamine. The purity of the obtained product can reach over 99%, with a consumption of 150kg of dimethylaminopropane per ton of product.

production method

The preparation method involves adding a solution of Minzhong No.2 Middle School's Jianji Bingshan and a complex catalytic agent to high-pressure metal, replacing the precious gas in the high-pressure metal with a core, and then starting the sample after passing the test. Hydrogen gas is introduced at a straight temperature and pressurized at 501 Pa. The reaction endpoint is the pressure of the reaction metal, and the sample is taken for analysis and cooled;

Then the crude product is transferred to a distillation kettle for vacuum distillation. The solvent is first removed, and then the product is collected at 73-75 ° C9x10~Pa. Reaction equation: (CH32NCH2CH2CN+2H2 [catalyst - (CH32NCH2CH2CH2NH2)

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