ChemicalBook > CAS DataBase List > 4,5-Dibromo-1,2-benzenediol

4,5-Dibromo-1,2-benzenediol

Product Name
4,5-Dibromo-1,2-benzenediol
CAS No.
2563-26-0
Chemical Name
4,5-Dibromo-1,2-benzenediol
Synonyms
NSC10858;550248_SIAL;ZINC00254871;4,5-Dibromocatechol;4,5-dibromopyrocatechol;4,5-Dibromo-1,2-Benzenediol;1,2-BENZENEDIOL,4,5-DIBROMO-;Pinaverium Bromide Impurity 8;Benzen-1,2-diol, 4,5-dibromo-;4 5-DIBROMOBENZENE-1 2-DIOL 90% TECH
CBNumber
CB6499765
Molecular Formula
C6H4Br2O2
Formula Weight
267.9
MOL File
2563-26-0.mol
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4,5-Dibromo-1,2-benzenediol Property

Melting point:
111-116°C (lit.)
Boiling point:
328.5±37.0 °C(Predicted)
Density 
2.257±0.06 g/cm3(Predicted)
storage temp. 
Sealed in dry,Room Temperature
pka
7.98±0.23(Predicted)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
WGK Germany 
3
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

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.

P271Use only outdoors or in a well-ventilated area.

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

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
550248
Product name
4,5-Dibromobenzene-1,2-diol
Purity
90%, technical grade
Packaging
5g
Price
$217
Updated
2024/03/01
TRC
Product number
D437350
Product name
4,​5-​Dibromobenzene-​1,​2-​diol(90%,technicalgrade)
Packaging
500mg
Price
$90
Updated
2021/12/16
TRC
Product number
D437350
Product name
4,​5-​Dibromobenzene-​1,​2-​diol(90%,technicalgrade)
Packaging
1g
Price
$145
Updated
2021/12/16
Chem-Impex
Product number
41851
Product name
4,5-Dibromobenzene-1,2-diol,suitableforHematology&Histology,≥88%(GC),Technicalgrade
Purity
≥88%(GC)
Packaging
5G
Price
$182.87
Updated
2021/12/16
Matrix Scientific
Product number
078259
Product name
4,5-Dibromobenzene-1,2-diol
Packaging
1g
Price
$142
Updated
2021/12/16
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4,5-Dibromo-1,2-benzenediol Chemical Properties,Usage,Production

Uses

4,?5-?Dibromobenzene-?1,?2-?diol is a dye. Dyes and metabolites.

Synthesis

4,5-Dibromo-1,2-benzenediol is obtained by reacting catechol with Bromine in CCl4.
Experimental procedure£oIn a 500mL three neck round bottom flask under nitrogen, equipped with a refluxcondenser, an addition funnel and a gas outlet connected to a bubbler filled with a 10%NaOH aqueous solution, was suspended catechol (136 mmol, 15.0 g, 1 eq.) in CCl4 (150mL). Bromine (272 mmol, 43.5 g, 2 eq.) diluted in CCla(20mL) was added dropwise at 0?? over 4.5 h. The excess of bromine was neutralized with aqueous NaHSO4 (150mL,40% solution). The mixture was filtrated and the solids were dissolved in CCLa,washed with water and dried in vacuum. The obtained 4,5-dibromocatechol (30.2 g)was then recrystallized from CHCl3 (220 mL) to afford a white crystalline solid (22.5 g,62%).

4,5-Dibromo-1,2-benzenediol Preparation Products And Raw materials

Raw materials

Preparation Products

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4,5-Dibromo-1,2-benzenediol Suppliers

AKos Consulting and Solutions GmbH
Tel
--
Fax
--
Email
akos@akosgmbh.eu
Country
Germany
ProdList
1061
Advantage
60

2563-26-0, 4,5-Dibromo-1,2-benzenediol Related Search:


  • 4,5-dibromopyrocatechol
  • 550248_SIAL
  • Benzen-1,2-diol, 4,5-dibromo-
  • NSC10858
  • ZINC00254871
  • 4 5-DIBROMOBENZENE-1 2-DIOL 90% TECH
  • 4,5-DIBROMOBENZENE-1,2-DIOL, 90% tech grade
  • 4,5-Dibromo-1,2-Benzenediol
  • 1,2-BENZENEDIOL,4,5-DIBROMO-
  • 4,5-Dibromobenzene-1,2-diol 90%, technical grade
  • Pinaverium Bromide Impurity 8
  • 4,5-Dibromocatechol
  • 2563-26-0
  • C6H4O2Br2