Dibenzylamine Property

Melting point:

-26 °C (lit.)

Boiling point:

300 °C (lit.)

Density 

1.026 g/mL at 25 °C (lit.)

vapor pressure 

1-1013hPa at 113.1-286℃

refractive index 

n20/D 1.574(lit.)

Flash point:

290 °F

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

solubility 

0.4g/l

form 

Liquid

pka

pK1:8.52(+1) (25°C)

color 

Clear colorless to light yellow

PH

8.9 (H2O, 20℃)

Odor

ammonia-like odor

Water Solubility 

0.05 g/L (20 ºC)

Merck 

14,3011

BRN 

909664

Dielectric constant

3.6（20℃）

Stability:

Stable. Incompatible with oxidizing agents, acid anhydrides, acids, acid chlorides, chloroformates.

InChIKey

BWLUMTFWVZZZND-UHFFFAOYSA-N

LogP

2.67 at 20℃

CAS DataBase Reference

103-49-1(CAS DataBase Reference)

NIST Chemistry Reference

Dibenzylamine(103-49-1)

EPA Substance Registry System

Dibenzylamine (103-49-1)

Safety

Hazard Codes 

Xn,Xi,C

Risk Statements 

22-36/38-52/53-34

Safety Statements 

26-61-45-36/37/39

RIDADR 

2810

WGK Germany 

3

Hazard Note 

Irritant/Corrosive

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

29214980

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H314Causes severe skin burns and eye damage

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P270Do not eat, drink or smoke when using this product.

P273Avoid release to the environment.

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

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

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.

Dibenzylamine Chemical Properties,Usage,Production

Chemical Properties

colorless to light yellow oily liquid with ammonia odor. soluble in ethanol and ether, insoluble in water.

Uses

Dibenzylamine is used to prepare rubber accelerator for the vulcanization process and reaction-stoppers. Dibenzylamine type accelerators reduce nitrosamine production in the compounding process. It is also used to produce dibenzyl-nitroso-amine.

Preparation

Dibenzylamine is obtained by the reaction of benzyl chloride and liquid ammonia in ethanol.

Application

Dibenzylamine is an important organic synthesis intermediate, mainly used to produce efficient and non-toxic vulcanization accelerators tetrabenzylthiuramdisulfide (TBZTD) and zinc dibenzyldithiocarbamate (ZBEC). Synthesize penicillin and curing agent for rubber and plastic curing, and can be used in the detection of cobalt, cyanate, and iron.

Definition

ChEBI: Dibenzylamine is an aromatic amine.

Biological Functions

Dibenzylamine (DBA) has anticonvulsant effects. It can block NMDA-evoked currents in a concentration and voltage-dependent manner. This conclusion was researched in an audiogenic seizure-susceptible mouse model. It possesses antiproliferative properties and could be of interest for the development of new antitumor drugs.

Synthesis Reference(s)

Tetrahedron Letters, 26, p. 4633, 1985 DOI: 10.1016/S0040-4039(00)98771-9
The Journal of Organic Chemistry, 60, p. 5969, 1995 DOI: 10.1021/jo00123a041

Hazard

Dibenzylamine is danger.
H302 (99.32%): Harmful if swallowed [Warning Acute toxicity, oral]
H314 (57.43%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
H315 (42.57%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (42.57%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H412 (32.43%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Purification Methods

Purify the amine by distillation in a vacuum. It causes burns to the skin. The dihydrochloride has m 265-266o (from MeOH/HCl), and the tetraphenyl boronate has m 129-133o. [Bradley & Maisey J Chem Soc 247 1954, Hall J Phys Chem 60 63 1956, Donetti & Bellora J Org Chem 37 3352 1972, Beilstein 12 IV 2179.]