109-55-7 Usage
Description
Dimethylaminopropylamine is an aliphatic amine
present in amphoteric surfactants such as liquid soaps
and shampoos. It is present as an impurity responsible
for allergy from cocamidopropylbetaine. It is structurally
similar to diethylaminopropylamine. It is also used
as a curing agent for epoxy res ins and as an organic
intermediate in chemical syntheses (ion exchangers,
additives for flocculants, cosmetics and fuel additives,
dyes and pesticides).
Chemical Properties
clear liquid
Uses
Different sources of media describe the Uses of 109-55-7 differently. You can refer to the following data:
1. N,N-Dimethyl-1,3-propylenediamine is a useful catalyst for Knoevenagel condensation. It is also a useful hardening agent for expoxy resin.
2. Useful for cleavage of N-alkylphthalimide derivatives to give primary amines, as an alternative to methyl hydrazine. DMAPA is also used directly as a hardener in epoxy resins in the plastics industry, as a cross linking agent for cellulose fibers in the paper industry and as an anti-shriking agent for leather. It is used as an intermediate in the production of binding agents, ion-exchange materials, flocculating agents (water treatment), cosmetic agents, washing and cleaning agents (betaines), additive for petrol and other fuels, polyurethane fibers and lubricants, dyes, agrochemicals, agents used in the photographic and textile industries.
3. 3-(Dimethylamino)propylamine is an intermediate substance in the synthesis of alkylamidopropyldimethylamines/alkylamidobetaines; found as an impurity in
cosmetic surfactants present in e.g. shampoos; hardener of epoxy resins; additive in fue!, dyes, pesticides and binding agents; in the
production of ion-exchangers.
General Description
Colorless liquid.
Air & Water Reactions
Highly flammable. Temperature sensitive and possibly sensitive to air. Water soluble.
Reactivity Profile
3-Dimethylaminopropylamine neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.
Fire Hazard
3-Dimethylaminopropylamine is flammable.
Flammability and Explosibility
Flammable
Contact allergens
Dimethylaminopropylamine is an aliphatic amine present in amphoteric surfactants such as liquid soaps and shampoos. It is present as a residual impurity thought to be responsible for allergy from cocamidopropylbetaine. It is structurally similar to diethylaminopropylamine. It is also used as a curing agent for epoxy resins and an organic intermediate in chemical synthesises (ion exchangers, additives for flocculants, cosmetics and fuel additives, dyes and pesticides). Patch test has to be carefully interpreted, since the 1% aqueous solution has pH > 11 (personal observation).
Safety Profile
Moderately toxic by ingestion and skin contact. A skin and eye irritant. Very flammable when exposed to heat, flame, or oxidmers. Reaction with 1,2dichloroethane produces explosive acetylene gas. This and other amines igmte on contact with cellulose nitrate of hgh surface area. To fight fire, use alcohol foam, CO2, dry chemical. When heated to decomposition it emits toxic fumes of NO,. See also AMINES
Check Digit Verification of cas no
The CAS Registry Mumber 109-55-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,0 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 109-55:
(5*1)+(4*0)+(3*9)+(2*5)+(1*5)=47
47 % 10 = 7
So 109-55-7 is a valid CAS Registry Number.
InChI:InChI=1/C5H14N2/c1-7(2)5-3-4-6/h3-6H2,1-2H3/p+2
109-55-7Relevant articles and documents
Role of hydrogen-bonded nucleophiles in aromatic nucleophilic substitutions in aprotic solvents. Reactions of halonitrobenzenes with ethylenediamine, 3-dimethylamino-1-propylamine and histamine in toluene
Alvaro, Cecilia E. Silvana,Nudelman, Norma Sbarbati
, p. 880 - 885 (2005)
The kinetics of the reactions between 1-halogeno-2,4-dinitrobenzene (halogen = F, C1) and the amines ethylenediamine (EDA) and 3-dimethylamino-1- propylamine (DMPA) were studied in toluene at 25° ±0.2C under pseudo-first-order conditions using varying amounts of amine. Even with C1 as the nucleofugue (where usually the first step is rate-determining), a third-order-in-amine kinetic law was observed: these results can be interpreted within the 'dimer nucleophile' mechanism where the amine homo-aggregates are better nucleophiles than the amine monomers. To confirm this interpretation, the reaction of 2,4-dinitrofluorobenzene with histamine was studied in the same solvent. Because of the rigid geometry, an intramolecular hydrogen bond is easily established, which prevents the formation of self-aggregates. Consequently, the plot of kA vs. [histamine] is a straight line, as expected for a classical mechanism of base-catalysed decomposition of the zwitterionic intermediate. All these results are well explained in the frame of the 'dimer nucleophile' mechanism. Copyright
A process for preparing N, N - dimethyl - 1, 3 - propanediamines method
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Paragraph 0034-0035; 0037; 00041-0042; 0044; 0049-0050; 0052, (2017/08/26)
The invention relates to a method for preparing N,N-dimethyl-1,3-diaminopropane. The method comprises the steps that acrylonitrile is added into a synthesis kettle, and dimethylamine is added and then removed through decompressing rectifying to prepare N,N-dimethyl amine acrylonitrile; a hydrogenation catalyst is added, liquid ammonia is introduced into the high-pressure kettle, hydrogen is introduced, reacting is performed, settling is performed, then prefractionation is performed, and rectifying is performed to obtain the N,N-dimethyl-1,3-diaminopropane. According to the method for preparing the DMAPA, the technology is simple, improvement of the selectivity is guaranteed, the yield per unit of double slag is greatly decreased, and a large amount of dangerous waste treatment charge is saved; consumption of the raw materials of the acrylonitrile and the dimethylamine is reduced, the raw material consumption cost of a DMAPA synthesis device is saved, that is, the production cost is saved, and the enterprise benefits are increased.
PREPARATION OF DIAMINE VIA THE PREPARATION OF AMINONITRILE
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Paragraph 0128; 0129 - 0132, (2014/02/15)
A continuous method (P) for preparing diamine is described. The method includes reacting the corresponding alkene nitrile with the corresponding monoamine in order to form the corresponding aminonitrile. The monoamine can be introduced in molecular excess with respect to the alkene nitrile, wherein the unreacted monoamine is recirculated to the reaction; followed by reducing the aminonitrile produced by hydrogen in the presence of at least one alkali-metal hydroxide, water, and a hydrogenation catalyst; and purifying the diamine.
PROCESS FOR HYDROGENATING NITRILES
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Page/Page column 8, (2012/10/08)
The present invention relates to a process for hydrogenating nitriles by means of hydrogen in the presence of a catalyst in a reactor, where the catalyst is arranged in a fixed bed, wherein the cross-sectional loading in the reactor is in the range from 5 kg/(m2s) to 50 kg/(m2s). The present invention further relates to a process for preparing downstream products of isophoronediamine (IPDA) or N,N-dimethylaminopropylamine (DMAPA) from amines prepared according to the invention.
