4,5-Dibromo-1,2-benzenediol

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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