ChemicalBook >> CAS DataBase List >>N,N-Dimethylbenzylamine

N,N-Dimethylbenzylamine

CAS No.
103-83-3
Chemical Name:
N,N-Dimethylbenzylamine
Synonyms
BDMA;N,N-DiMethyl-1-phenylMethanaMine;Benzyldimethylamine;N,N-DIETHYLBENZYLAMINE;N,N-Dimethyl-N-benzylamine;BENZYLDIETHYLAMINE;Dabco B-16;sumine2015;Dabco BDMA;Sumine 2015
CBNumber:
CB8240778
Molecular Formula:
C9H13N
Molecular Weight:
135.21
MDL Number:
MFCD00026731
MOL File:
103-83-3.mol
MSDS File:
SDS
Last updated:2024-09-12 21:58:09

N,N-Dimethylbenzylamine Properties

Melting point -75 °C
Boiling point 183-184 °C765 mm Hg(lit.)
Density 0.9 g/mL at 25 °C(lit.)
vapor pressure 2.4 hPa (20 °C)
refractive index n20/D 1.501(lit.)
Flash point 130 °F
storage temp. Store below +30°C.
solubility water: soluble
pka pK1:9.02(+1) (25°C)
form Liquid
color Clear colorless to light yellow
PH 10 (10g/l, H2O, 20℃)(saturated solution)
Odor strong fish odor
explosive limit 0.9-6.3%(V)
Water Solubility 8 g/L (20 ºC)
Sensitive Air Sensitive
BRN 1099620
Stability Stable. Incompatible with strong acids, strong oxidizing agents.
LogP 1.98 at 25℃
CAS DataBase Reference 103-83-3(CAS DataBase Reference)
EWG's Food Scores 3
FDA UNII TYP7AXQ1YJ
NIST Chemistry Reference Benzenemethanamine, N,N-dimethyl-(103-83-3)
EPA Substance Registry System N,N-Dimethylbenzylamine (103-83-3)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
GHS02,GHS05,GHS06,GHS09
Signal word  Danger
Hazard statements  H226-H301-H312+H332-H314-H411
Precautionary statements  P210-P273-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
Hazard Codes  C
Risk Statements  10-20/21/22-34-52/53
Safety Statements  26-36-45-61
RIDADR  UN 2619 8/PG 2
WGK Germany  2
RTECS  DP4500000
10-13-23
Autoignition Temperature 410 °C
TSCA  Yes
HazardClass  8
PackingGroup  II
HS Code  29214980
Toxicity LD50 orally in Rabbit: 290 mg/kg LD50 dermal Rat 695 mg/kg
NFPA 704
2
0

N,N-Dimethylbenzylamine price More Price(29)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.03206 N,N-Dimethylbenzylamine for synthesis 103-83-3 250ML $49.2 2024-03-01 Buy
Sigma-Aldrich 8.03206 N,N-Dimethylbenzylamine for synthesis 103-83-3 1L $159 2024-03-01 Buy
Sigma-Aldrich 185582 N,N-Dimethylbenzylamine ≥99% 103-83-3 100ml $34.1 2024-03-01 Buy
Sigma-Aldrich 13365 N,N-Dimethylbenzylamine for protein sequence analysis, ≥99.5% (GC) 103-83-3 50mL $171 2022-05-15 Buy
TCI Chemical D0688 N,N-Dimethylbenzylamine >98.0%(GC) 103-83-3 25mL $19 2024-03-01 Buy
Product number Packaging Price Buy
8.03206 250ML $49.2 Buy
8.03206 1L $159 Buy
185582 100ml $34.1 Buy
13365 50mL $171 Buy
D0688 25mL $19 Buy

N,N-Dimethylbenzylamine Chemical Properties,Uses,Production

Chemical Properties

Colorless to light yellow flammable liquid with ammonia odor. Soluble in ethanol, ether, insoluble in water.

Uses

N,N-Dimethylbenzylamine was used in the synthesis of bis[(N,N-dimethylamino)benzyl] selenide. It has been used as catalyst during curing reaction of formulations of diglycidyl ether of bisphenol A and tetrahydrophthalic anhydride. It undergoes directed ortho metalation with butyl lithium. It reacts with methyl iodide to get ammonium salt, which is used as phase transfer catalysts. Further, it is used as a catalyst for the formation of polyurethane foams and epoxy resins.

Preparation

25% Aqueous Dimethylamine, 1088 grams
Benzyl Chloride, 126.6 grams
In the apparatus of Example 1, the benzyl chloride was added dropwise over a two-hour period to the amine (molar ratio 1 to 6) at a rate sufficient to maintain the temperature below 40°C. Stirring was continued at room temperature for an additional hour to insure completion of the reaction denoted by the equation below.
Preparation of N,N-dimethylbenzylamine
Thereafter the reaction mixture was cooled in a separatory funnel while standing in a refrigerator maintained at 5° C. and separated into two layers. The upper oily layer, weighing 111.5g, was removed and steam distilled until no further oleaginous component was observed in the distillate as it came over. The crude distillate was found to contain 103.5g of N,N-dimethylbenzylamine (76.1% of theory), 3.3g of dimethylamine and no quaternary salts. The dimethylamine was distilled off below 29°C under atmospheric pressure from the N,N-dimethylbenzylamine (bp 82°C/18mmHg).

Synthesis Reference(s)

The Journal of Organic Chemistry, 40, p. 531, 1975 DOI: 10.1021/jo00892a043
Synthetic Communications, 6, p. 539, 1976 DOI: 10.1080/00397917608063545

General Description

Benzyldimethylamine appears as a colorless to light yellow liquid with an aromatic odor. Slightly less dense than water and slightly soluble in water. Corrosive to skin, eyes and mucous membranes. Slightly toxic by ingestion, skin absorption and inhalation. Used in the manufacture of adhesives;  dehydrohalogenating catalyst; corrosion inhibitor; acid neutralizer; potting compounds;  cellulose modifier and quaternary ammonium compounds.

Air & Water Reactions

Flammable. Slightly soluble in water.

Reactivity Profile

N,N-Dimethylbenzylamine neutralizes acids on 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 is generated by amines in combination with strong reducing agents, such as hydrides. May attack some plastics [USCG, 1999].

Health Hazard

Inhalation may be fatal as a result of spasm, inflammation and edema of the larynx and bronchi, chemical pneumonitis, and pulmonary edema. Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomitting.

Fire Hazard

Special Hazards of Combustion Products: Toxic vapors are generated when heated.

Safety Profile

Poison by ingestion. Moderately toxic by inhalation and skin contact. Corrosive. A severe eye and skin irritant. Flammable when exposed to heat or flame. When heated to decomposition it emits toxic fumes of NOx

Purification Methods

Dry the amine over KOH pellets and fractionate it over Zn dust in a CO2—free atmosphere. It has a pKa2 5 of 8.25 in 45% aqueous EtOH. Store it under N2 or in a vacuum. The picrate has m 94-95o, and the picrolonate has m 151o (from EtOH). [Skita & Keil Chem Ber 63 34 1930, Coleman J Am Chem Soc 55 3001 1933, Devereux et al. J Chem Soc 2845 1957.] The tetraphenyl borate salt has m 182-185o. [Crane Anal Chem 28 1794 1956, Beilstein 12 IV 2161.]

122-51-0
100-46-9
103-83-3
Synthesis of N,N-Dimethylbenzylamine from Triethyl orthoformate and Benzylamine
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N,N-Dimethylbenzylamine pictures 2024-10-29 N,N-Dimethylbenzylamine
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US $0.00 / KG 1KG 99% 50000KG/month Hebei Mojin Biotechnology Co., Ltd
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