ChemicalBook > CAS DataBase List > N,N'-Bis(phenylmethyl)-1,2-ethanediamine

N,N'-Bis(phenylmethyl)-1,2-ethanediamine

Product Name
N,N'-Bis(phenylmethyl)-1,2-ethanediamine
CAS No.
140-28-3
Chemical Name
N,N'-Bis(phenylmethyl)-1,2-ethanediamine
Synonyms
Dbed;BENZATHINE;N1,N2-Dibenzylethane-1,2-diaMine;Benzatin;Nsc5632;usafdo-53;USAF do-53;N,N'-DibenzyL;BENZATHINE 99%;enediamine Diacetate SaL
CBNumber
CB6214137
Molecular Formula
C16H20N2
Formula Weight
240.34
MOL File
140-28-3.mol
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N,N'-Bis(phenylmethyl)-1,2-ethanediamine Property

Melting point:
23-25°C
Boiling point:
195 °C4 mm Hg(lit.)
Density 
1.02 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.565(lit.)
Flash point:
>230 °F
storage temp. 
Room Temperature
solubility 
Chloroform (Slightly), Ethyl Acetate (Slightly), Water (Slightly)
form 
Solid
pka
9.15±0.19(Predicted)
Specific Gravity
1.025
color 
White to Off-White
Water Solubility 
Slightly soluble in water.
FreezingPoint 
21.0 to 25.0 ℃
Sensitive 
Air Sensitive
Merck 
14,1064
BRN 
786668
CAS DataBase Reference
140-28-3(CAS DataBase Reference)
NIST Chemistry Reference
1,2-Ethanediamine, N,N'-bis(phenylmethyl)-(140-28-3)
EPA Substance Registry System
1,2-Ethanediamine, N,N'-bis(phenylmethyl)- (140-28-3)
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Safety

Hazard Codes 
Xn
Risk Statements 
22-36/37/38
Safety Statements 
26
RIDADR 
2927
WGK Germany 
3
RTECS 
KV3325000
TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
29215990
Toxicity
LD50 orl-mus: 388 mg/kg CNCRA6 52,579,68
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

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

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

P302+P352IF ON SKIN: wash with plenty of soap and water.

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
D35201
Product name
N,N′-Dibenzylethylenediamine
Purity
97%
Packaging
25g
Price
$94.9
Updated
2024/03/01
Sigma-Aldrich
Product number
D35201
Product name
N,N′-Dibenzylethylenediamine
Purity
97%
Packaging
100g
Price
$217
Updated
2024/03/01
TCI Chemical
Product number
D1807
Product name
N,N'-Dibenzylethylenediamine
Purity
>98.0%(GC)(T)
Packaging
25mL
Price
$94
Updated
2024/03/01
TCI Chemical
Product number
D1807
Product name
N,N'-Dibenzylethylenediamine
Purity
>98.0%(GC)(T)
Packaging
500mL
Price
$906
Updated
2024/03/01
Alfa Aesar
Product number
L03540
Product name
N,N'-Dibenzylethylenediamine, 97%
Packaging
25g
Price
$73.65
Updated
2024/03/01
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N,N'-Bis(phenylmethyl)-1,2-ethanediamine Chemical Properties,Usage,Production

Chemical Properties

light yellow liquid

Uses

N,N'-Dibenzylethylenediamine is an intermediate of cephalosporin and penicillin.

Definition

ChEBI: Benzathine is a diamine. It is a conjugate base of a benzathine(1+).

Synthesis Reference(s)

The Journal of Organic Chemistry, 55, p. 3209, 1990 DOI: 10.1021/jo00297a042

Safety Profile

Poison by ingestion,intraperitoneal, and parenteral routes. When heated todecomposition it emits toxic vapors of NOx.

Purification Methods

Dissolve DBED in acid, extract with toluene, basify, extract it with Et2O, dry over solid KOH, evaporate and fractionate it in vacuo. The diacetate crystallises from H2O by addition of EtOH and has m 111o (solubility in H2O is ~25%). The dihydrochloride has m 306-308o (from H2O) and the dipicrate has m 212o(dec) (from H2O). [Frost et al., J Am Chem Soc 71 3842 1949, Beilstein 12 H 1067, 12 III 2304.]

N,N'-Bis(phenylmethyl)-1,2-ethanediamine Preparation Products And Raw materials

Raw materials

Preparation Products

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N,N'-Bis(phenylmethyl)-1,2-ethanediamine Suppliers

Carbosynth
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CARBONE SCIENTIFIC CO.,LTD
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ARIAC - Armenian Institute of Applied Chemistry
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View Lastest Price from N,N'-Bis(phenylmethyl)-1,2-ethanediamine manufacturers

Career Henan Chemical Co
Product
N,N'-Bis(phenylmethyl)-1,2-ethanediamine 140-28-3
Price
US $3.00/KG
Min. Order
1KG
Purity
98%
Supply Ability
1kg , 5kg, 50kg
Release date
2020-01-17

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