1,4-Dibromo-2,5-dichlorobenzene
- Product Name
- 1,4-Dibromo-2,5-dichlorobenzene
- CAS No.
- 4571-24-8
- Chemical Name
- 1,4-Dibromo-2,5-dichlorobenzene
- Synonyms
- 1,4-Dibromo-2,5-dichlorobenzen;2,5-dichlorop-p-dibromobenzene;1,4-Dibromo-2,5-dichlorobenzene;1,4-Dichloro-2,5-dibromobenzene;Benzene,1,4-dibromo-2,5-dichloro-
- CBNumber
- CB32322664
- Molecular Formula
- C6H2Br2Cl2
- Formula Weight
- 304.79
- MOL File
- 4571-24-8.mol
1,4-Dibromo-2,5-dichlorobenzene Property
- Melting point:
- 148-150 °C
- Boiling point:
- 292.9±35.0 °C(Predicted)
- Density
- 2.091±0.06 g/cm3(Predicted)
- storage temp.
- 2-8°C
- Appearance
- White to off-white Solid
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- D425428
- Product name
- 1,4-Dibromo-2,5-dichlorobenzene
- Packaging
- 50mg
- Price
- $45
- Updated
- 2021/12/16
- Product number
- 2936AQ
- Product name
- 1,4-DIBROMO-2,5-DICHLOROBENZENE
- Packaging
- 5g
- Price
- $544.4
- Updated
- 2021/12/16
- Product number
- A126296
- Product name
- 1,4-Dibromo-2,5-dichlorobenzene
- Purity
- 95%
- Packaging
- 25g
- Price
- $758
- Updated
- 2021/12/16
- Product number
- 4571248
- Product name
- 1,4-Dibromo-2,5-dichlorobenzene
- Packaging
- 500mg
- Price
- $782.4
- Updated
- 2021/12/16
- Product number
- CM253057
- Product name
- 1,4-Dibromo-2,5-dichlorobenzene
- Purity
- 95%
- Packaging
- 25g
- Price
- $898
- Updated
- 2021/12/16
1,4-Dibromo-2,5-dichlorobenzene Chemical Properties,Usage,Production
Synthesis
106-46-7
1435-50-3
4571-24-8
The general procedure for the synthesis of 1-bromo-2,5-dichlorobenzene and 1,4-dibromo-2,5-dichlorobenzene from 1,4-dichlorobenzene was as follows: 147.0 g (1.00 mol) of 1,4-dichlorobenzene was accurately weighed in a reactor, 515 g of carbon tetrachloride was added as a solvent, and dissolved by stirring. Subsequently, 7.35 g of anhydrous aluminum chloride was added as a catalyst and after stirring for 15 minutes, the reaction system was warmed up to 35°C. At this temperature, 105.6 g (0.66 mol) of bromine was started to be added dropwise at a constant drop rate and the dropwise process lasted for 9 hours to complete. Upon completion of the reaction, the reaction was terminated by adding 200.0 g of 5% mass fraction sodium bisulfite solution to the reaction mixture until the mixture became colorless. After standing and layering, the organic phase was separated and the resulting carbon tetrachloride layer was concentrated. Ultimately, 73.0 g (0.50 mol) of unreacted 1,4-dichlorobenzene, 111.5 g (0.48 mol) of 1-bromo-2,5-dichlorobenzene and 7.1 g (0.02 mol) of 1,4-dibromo-2,5-dichlorobenzene were obtained by distillation.
References
[1] Green Chemistry, 2012, vol. 14, # 9, p. 2380 - 2383
[2] Patent: CN105801334, 2016, A. Location in patent: Paragraph 0066
1,4-Dibromo-2,5-dichlorobenzene Preparation Products And Raw materials
Raw materials
Preparation Products
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