ChemicalBook > CAS DataBase List >  1,3-Dimethyl-1,3-diphenylurea

1,3-Dimethyl-1,3-diphenylurea

Product Name
1,3-Dimethyl-1,3-diphenylurea
CAS No.
611-92-7
Chemical Name
1,3-Dimethyl-1,3-diphenylurea
Synonyms
Centralite II;Zentralin;Zentralit I;Centralite-2;Centralit II;Zentralit II;Centralite ll;METHYL CENTRALITE;Dimethyldiphenylurea;N,N'-DIMETHYLCARBANILIDE
CBNumber
CB9218833
Molecular Formula
C15H16N2O
Formula Weight
240.3
MOL File
611-92-7.mol
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1,3-Dimethyl-1,3-diphenylurea Property

Melting point:
120-122 °C(lit.)
Boiling point:
383.02°C (rough estimate)
Density 
1.0611 (rough estimate)
vapor pressure 
0.001Pa at 25℃
refractive index 
1.6390 (estimate)
storage temp. 
2-8°C
solubility 
Dichloromethane (Slightly), DMSO (Slightly), Methanol (Very Slightly)
form 
Solid
pka
0.68±0.50(Predicted)
color 
White to Pale Green
Water Solubility 
76.42mg/L at 20℃
InChI
InChI=1S/C15H16N2O/c1-16(13-9-5-3-6-10-13)15(18)17(2)14-11-7-4-8-12-14/h3-12H,1-2H3
InChIKey
ADCBKYIHQQCFHE-UHFFFAOYSA-N
SMILES
N(C)(C1=CC=CC=C1)C(N(C)C1=CC=CC=C1)=O
LogP
2.82 at 25℃
CAS DataBase Reference
611-92-7(CAS DataBase Reference)
EPA Substance Registry System
Urea, N,N'-dimethyl-N,N'-diphenyl- (611-92-7)
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Safety

Safety Statements 
22-24/25
WGK Germany 
2
RTECS 
FE0600000
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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.

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

TRC
Product number
C256618
Product name
CentraliteII
Packaging
250mg
Price
$40
Updated
2021/12/16
TRC
Product number
C256618
Product name
CentraliteII
Packaging
5g
Price
$250
Updated
2021/12/16
AK Scientific
Product number
0570BA
Product name
1,3-Dimethyl-1,3-diphenylurea
Packaging
25g
Price
$517
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
CHM0115204
Product name
1,3-DIMETHYL-1,3-DIPHENYLUREA
Purity
95.00%
Packaging
100G
Price
$2461.88
Updated
2021/12/16
Alichem
Product number
611927
Product name
1,3-Dimethyl-1,3-diphenylurea
Packaging
100g
Price
$742.5
Updated
2021/12/16
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1,3-Dimethyl-1,3-diphenylurea Chemical Properties,Usage,Production

Chemical Properties

Centralite II, also known as 1,3-Dimethyl-1,3-diphenylurea, is a white to grey crystalline powder that is soluble in water, alcohol, acetone, and chloroform. This substance is commonly used as a burning rate moderator and stabilizer for smokeless powder, as well as a plasticizer for celluloid.

Uses

Detection of Methyl Centralite (MC) as gunshot residues (GSR) has been developed.

Description

1,3-Dimethyl-1,3-diphenylurea for Stabilizer and propellant, and production of intermediates of organic chemicals.

Application

Centralite II can be used as a stabilizer for smokeless powder, explosives, nitrates and smokeless fuels, as well as intermediates for fine chemicals.

Uses

1,3-Dimethyl-1,3-diphenylurea (methyl centralite) is a stabilizer in different types of ammunition. This compound is organic gunshot residue. It is the characteristic compound for which forensic analysts test determining if a person has discharged a firearm[1-2].

Flammability and Explosibility

Not classified

Synthesis

To a 10 mL Schlenk tube equipped with a magnetic stirring bar was charged with arylcarbamoyl chlorides (0.2 mmol, 1.0 equiv), and KHCO3 (40 mg, 0.4 mmol), and then Pd(PPh3)4 (0.01 mmol, 11.56 mg) were added. Finally, 1,4-dioxane (1.0 mL) was added to the mixture via syringe at room temperature under N2. The tube was sealed and put into a preheated oil bath a 100 °C for 48 h. The mixture was cooled to room temperature, quenched with water (5 mL), and diluted with ethyl acetate (5 mL). The layers were separated, and the aqueous layer was extracted with 2 × 5 mL of ethyl acetate. The combined organic extracts were dried over anhydrous sodium sulfate, filtered, and concentrated in vacuo. The crude product of 1,3-dimethyl-1,3-diphenylurea was purified by flash chromatography on silica gel (H), using 30-35% ethyl acetate/petroleum ether as the eluent.

References

[1] Ricardo J. González. “Detection of organic gunshot residues from human hands using direct sample analysis-time of flight-mass spectrometry.” Journal of Mass Spectrometry 57 5 (2022).
[2] Patrick W. Fedick , Ryan M. Bain. “Swab touch spray mass spectrometry for rapid analysis of organic gunshot residue from human hand and various surfaces using commercial and fieldable mass spectrometry systems.” Forensic Chemistry 5 (2017): Pages 53-57.

1,3-Dimethyl-1,3-diphenylurea Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from 1,3-Dimethyl-1,3-diphenylurea manufacturers

Shandong Juchuang Chemical Co., LTD
Product
1,3-Dimethyl-1,3-diphenylurea 611-92-7
Price
US $30.00-10.00/kg
Min. Order
500kg
Purity
99.9
Supply Ability
200tons
Release date
2024-03-12
Chongqing Hesheng Longgang Technology Co. Ltd.
Product
Centralite?II 611-92-7
Price
US $29.80-11.80/kg
Min. Order
3000kg
Purity
99%
Supply Ability
1500000
Release date
2023-02-04
Chongqing Hesheng Longgang Technology Co. Ltd.
Product
Centralite ll 611-92-7
Price
US $11.90-11.30/KG
Min. Order
1000KG
Purity
99%
Supply Ability
200000
Release date
2023-05-09

611-92-7, 1,3-Dimethyl-1,3-diphenylureaRelated Search:


  • N,N-DIMETHYL CARBANILIDE
  • N,N'-DIMETHYLCARBANILIDE
  • N,N'-DIMETHYL-N,N'-DIPHENYLUREA
  • 1,3-DIMETHYL-1,3-DIPHENYLUREA
  • METHYL CENTRALITE
  • N,N'-Dimethyl-N,N'-diphenylharnstoff
  • sym-Dimethyldiphenylurea
  • Carbanilide, N,N'-dimethyl-
  • Centralit II
  • Centralite II
  • Centralite-2
  • Zentralin
  • Zentralit I
  • Zentralit II
  • N,N'-Dimethyldiphenylurea (Methyl Centralite)
  • Methylcentralite@100 μg/mL in Acetonitrile:Methanol (50:50)
  • 1,3-Dimethyl-1,3-diphenylure
  • Centralite ll
  • N,N-DIMETHYLDIPHENYLUREA
  • Dimethyldiphenylurea
  • N,N'-Dimethyl-N,N'-diphenylurea
  • 611-92-7
  • C6H5NCH32CO
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