N,N-Dimethylbenzylamine

ChemicalBook > CAS DataBase List > N,N-Dimethylbenzylamine

N,N-Dimethylbenzylamine

Product Name: 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
Formula Weight: 135.21
MOL File: 103-83-3.mol

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N,N-Dimethylbenzylamine Property

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)
NIST Chemistry Reference: Benzenemethanamine, N,N-dimethyl-(103-83-3)
EPA Substance Registry System: N,N-Dimethylbenzylamine (103-83-3)

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Safety

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
F: 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

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H226Flammable liquid and vapour

H301Toxic if swalloed

H314Causes severe skin burns and eye damage

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 8.03206
Product name: N,N-Dimethylbenzylamine
Purity: for synthesis
Packaging: 250ML
Price: $49.2
Updated: 2024/03/01

Sigma-Aldrich

Product number: 8.03206
Product name: N,N-Dimethylbenzylamine
Purity: for synthesis
Packaging: 1L
Price: $159
Updated: 2024/03/01

Sigma-Aldrich

Product number: 185582
Product name: N,N-Dimethylbenzylamine
Purity: ≥99%
Packaging: 100ml
Price: $34.1
Updated: 2024/03/01

Sigma-Aldrich

Product number: 13365
Product name: N,N-Dimethylbenzylamine
Purity: for protein sequence analysis, ≥99.5% (GC)
Packaging: 50mL
Price: $171
Updated: 2022/05/15

TCI Chemical

Product number: D0688
Product name: N,N-Dimethylbenzylamine
Purity: >98.0%(GC)
Packaging: 25mL
Price: $19
Updated: 2024/03/01

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N,N-Dimethylbenzylamine Chemical Properties,Usage,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.

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.]

N,N-Dimethylbenzylamine Preparation Products And Raw materials

Raw materials

Benzyl chloride Benzylamine aminoformic acid Dimethylamine

Preparation Products

Diethyl 3,5-di-tert-butyl-4-hydroxybenzyl phosphate BRETYLIUM TOSYLATE Benzyldodecyldimethylammonium bromide dioctadecyl [[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]phosphonate

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View Lastest Price from N,N-Dimethylbenzylamine manufacturers

Qingdao RENAS Polymer Material Co., Ltd.

Product: N,N-Dimethylbenzylamine 103-83-3
Price: US $0.00/kg
Min. Order: 20kg
Purity: 99%
Supply Ability: 20 tons
Release date: 2024-09-12

Hebei Chuanghai Biotechnology Co,.LTD

Product: N,N-Dimethylbenzylamine 103-83-3
Price: US $10.60/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 5000kg
Release date: 2024-08-01

Hebei Weibang Biotechnology Co., Ltd

Product: N,N-Dimethylbenzylamine 103-83-3
Price: US $1.00/PCS
Min. Order: 1KG
Purity: 99%
Supply Ability: 10 mt
Release date: 2021-06-08

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