4-Bromo-o-xylene

Product Name: 4-Bromo-o-xylene
CAS No.: 583-71-1
Chemical Name: 4-Bromo-o-xylene
Synonyms: 4-BROMO-1,2-DIMETHYLBENZENE;o-Xylene, 4-bromo-;Medetomidine Impurity 1;Medetomidine Impurity 31;4-bromo-o-xylen;5-BROMO-O-XYLENE;4-BROMO-O-XYLENE;ρ-Bromo-o-xylene;3,4-xylylbromide;4-Bromoxylene,98%
CBNumber: CB3363557
Molecular Formula: C8H9Br
Formula Weight: 185.06
MOL File: 583-71-1.mol

More

Less

4-Bromo-o-xylene Property

Melting point:: −12-−10 °C
Boiling point:: 215 °C (lit.)
Density: 1.37 g/mL at 25 °C (lit.)
refractive index: n20/D 1.555(lit.)
Flash point:: 177 °F
storage temp.: Store below +30°C.
form: clear liquid
color: Colorless to Light yellow
Specific Gravity: 1.37
Water Solubility: Not miscible in water.
BRN: 2040354
InChI: 1S/C8H9Br/c1-6-3-4-8(9)5-7(6)2/h3-5H,1-2H3
InChIKey: QOGHRLGTXVMRLM-UHFFFAOYSA-N
SMILES: Cc1ccc(Br)cc1C
CAS DataBase Reference: 583-71-1(CAS DataBase Reference)
NIST Chemistry Reference: Benzene, 4-bromo-1,2-dimethyl-(583-71-1)
EPA Substance Registry System: Benzene, 4-bromo-1,2-dimethyl- (583-71-1)

More

Less

Safety

Hazard Codes: Xn,N,Xi
Risk Statements: 22-36/37/38-50/53
Safety Statements: 26-60-61-24/25
RIDADR: UN 1701 6.1/PG 2
WGK Germany: 3
RTECS: CY9020400
F: 19
Hazard Note: Irritant
TSCA: TSCA listed
HazardClass: 9
HS Code: 29036990
Storage Class: 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
Hazard Classifications: Acute Tox. 4 Oral
Aquatic Acute 1
Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

More

Less

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

H400Very toxic to aquatic life

Precautionary statements

P273Avoid release to the environment.

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.

More

Less

N-Bromosuccinimide Price

Sigma-Aldrich

Product number: B83800
Product name: 4-Bromo-1,2-dimethylbenzene
Purity: 70%
Packaging: 5g
Price: $48.1
Updated: 2023/06/20

Sigma-Aldrich

Product number: B83800
Product name: 4-Bromo-1,2-dimethylbenzene
Purity: 70%
Packaging: 100g
Price: $311
Updated: 2023/06/20

TCI Chemical

Product number: B1346
Product name: 4-Bromo-o-xylene (contains 3-Bromo-o-xylene)
Packaging: 25G
Price: $51
Updated: 2025/07/31

TCI Chemical

Product number: B1346
Product name: 4-Bromo-o-xylene (contains 3-Bromo-o-xylene)
Packaging: 500G
Price: $409
Updated: 2022/04/27

TRC

Product number: B691553
Product name: 4-Bromo-1,2-dimethylbenzene
Packaging: 10g
Price: $65
Updated: 2021/12/16

More

Less

4-Bromo-o-xylene Chemical Properties,Usage,Production

Chemical Properties

Clear colourless to light yellow liquid

Uses

4-Bromo-o-xylene is used as synthetic organic materials and soluble polyimide resin intermediates.

Synthesis

A method for the preparation of 4-bromo-1,2-xylene, the method uses o-xylene as raw material, in the presence of dichloromethane solvent and catalyst, dropwise addition of bromine at a temperature of -60 ?? to -20 ??, o-xylene and bromine molar ratio of 1:1, after the dropwise addition is completed, hold the temperature to carry out the reaction, and then slowly raise the temperature to 10-20 ??, to remove the dissolved hydrogen bromide in the reaction solution, add saturated aqueous solution of sodium sulfite , stirring for 30 minutes, the product containing dichloromethane was recovered by layering, and then washed with 5% dilute alkali solution to PH = 8-9, and finally washed with water to neutral, to obtain colorless or light yellow 4-bromo-1,2-xylene crude product, distillation under atmospheric pressure to recover solvent dichloromethane, and then distillation under reduced pressure to obtain 4-bromo-1,2-xylene product, said catalyst is a mixture of ferric chloride and quaternary ammonium salt, and the catalyst is a mixture of ferric chloride and quaternary ammonium salt. The quaternary ammonium salt is for example: tetrabutyl ammonium chloride, tetrabutyl ammonium bromide, tetrapropyl ammonium bromide, methyltrioctyl ammonium chloride, benzyltriethylammonium chloride, and the mass ratio of ferric trichloride and the quaternary ammonium salt is 4-5:1. The content of the obtained 4-bromo-1,2-xylene is increased to 85-93%, and at the same time, the content of the byproduct is reduced, and the yield of the product is increased to 95%. Duration of bromine addition: 3-4 h. Holding time of reaction: 2 h. Temperature of alkaline washing: room temperature.

4-Bromo-o-xylene Preparation Products And Raw materials

Raw materials

o-Xylene Hydrogen bromide Bromine

Preparation Products

5-BROMOISOINDOLINE

More

Less

4-Bromo-o-xylene Suppliers

Americas 1 Belgium 1 China 149 Europe 3 France 1 Germany 3 India 6 Japan 3 Switzerland 1 Ukraine 1 United Kingdom 12 United States 29 USA 1 Global 211

3B Pharmachem (Wuhan) International Co.,Ltd.

Tel: 821-50328103-801 18930552037
Fax: 86-21-50328109
Email: 3bsc@sina.com
Country: China
ProdList: 15838
Advantage: 69

Shanghai Kaisai Chemical Co., Ltd

Tel: 021-33516722 13701817765
Fax: 021-33516776
Email: kaisaichem@163.com
Country: China
ProdList: 4609
Advantage: 58

Shanghai Boyle Chemical Co., Ltd.

Tel: 021-50182298 021-50180596
Fax: +86-21-57758967
Email: sales@boylechem.com
Country: China
ProdList: 2208
Advantage: 55

Meryer (Shanghai) Chemical Technology Co., Ltd.

Tel: 4006356688 18621169109
Fax: 86-21-61259102
Email: market03@meryer.com
Country: China
ProdList: 40228
Advantage: 62

Alfa Aesar

Tel: 400-6106006
Fax: 021-67582001/03/05
Email: saleschina@alfa-asia.com
Country: China
ProdList: 30123
Advantage: 84

TAIYUAN RHF CO.,LTD.

Tel: +86 351 7031519
Fax: +86 351 7031519
Email: sales@RHFChem.com
Country: China
ProdList: 2338
Advantage: 56

TCI (Shanghai) Development Co., Ltd.

Tel: 021-67121386
Fax: 021-67121385
Email: Sales-CN@TCIchemicals.com
Country: China
ProdList: 24529
Advantage: 81

Beijing dtftchem Technology Co., Ltd.

Tel: 010-60275820 13031183356
Fax: 010-60270825
Email: elainezt@sina.com
Country: China
ProdList: 1390
Advantage: 62

Energy Chemical

Tel: 021-021-58432009 400-005-6266
Fax: 021-58436166
Email: sales8178@energy-chemical.com
Country: China
ProdList: 44801
Advantage: 61

Wuhan Chemwish Technology Co., Ltd

Tel: 86-027-67849912
Fax: 86-027-87531808
Email: sales@chemwish.com
Country: China
ProdList: 35896
Advantage: 56

More

Less

View Lastest Price from 4-Bromo-o-xylene manufacturers

Hebei Chuanghai Biotechnology Co., Ltd

Product: 4-Bromo-o-xylene 583-71-1
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 20 mt
Release date: 2023-04-07

Career Henan Chemical Co

Product: 4-Bromo-o-xylene 583-71-1
Price: US $1.00/KG
Min. Order: 1KG
Purity: 95%
Supply Ability: 500KG
Release date: 2018-08-19

Career Henan Chemical Co

Product: 4-Bromo-o-xylene 583-71-1
Price: US $1.00/KG
Min. Order: 1KG
Purity: 40%-99%
Supply Ability: 1000kg
Release date: 2018-08-20

583-71-1, 4-Bromo-o-xyleneRelated Search:

Xylene 3-Bromoanisole 4'-Bromopropiophenone 2-Bromofluorobenzene o-Xylene Bromoxynil 4-Bromotoluene 4-Bromoveratrole Musk xylene 4-Bromobenzaldehyde m-Xylene Bromoxynil octanoate Sodium xylenesulfonate 2,3-Dimethylbenzaldehyde 5-[1-(2,3-DiMethylphenyl)ethenyl]iMidazole 2-(1-chloroethyl)-1,4-dimethylbenzene Medetomidine Impurity 54 à-bromo-m-xylene,α-bromo-m-xylene,α-Bromo-m-xylene ,96%,A-BROMO-M-XYLENE,ALPHA-BROMO-M-XYLENE,omega-bromo-m-xylen

o-Xylene, 4-bromo-

4-bromo-1,2-dimethyl-benzen

4-Bromo-ortho-xylene

4-bromo-o-xylen

B**4-Bromo-o-xylene

4-Bromo-O-Xylene97%

4-Bromo-o-xylene, remainder 3-bromo-o-xylene, 75%

4-BROMO-O-XYLENE / 1-BROMO3,4-DIMETHYLBENZENE

4-Bromo-1,2-dimethylbenzene~3,4-Dimethylbromobenzene

3.4-DIMETHYLBROMOBENZENE 99%

4-Bromo-o-xylene, 75%, remainder 3-bromo-o-xylene

4-Bromoxylene,98%

4-Bromoxylene, 98%

3,4-DIMETHYLBROMOBENZENE

1-BROMO-3,4-DIMETHYLBENZENE

5-BROMO-O-XYLENE

4-BROMO-1,2-DIMETHYLBENZENE

4-Bromo-1,2-xylene

4-BROMO-O-XYLENE

ρ-Bromo-o-xylene

4-Bromo-o-xylene (contains 3-Bromo-o-xylene)

4-bromo -1,2-dimethybenzene

4-Bromo-1,2-dimethyL

3,4-dimethylphenylbromide

3,4-Xylyl bromide

3,4-xylylbromide

Benzene, 4-bromo-1,2-dimethyl-

3,4- twodiMethylbroMobenzene

4-Bromo-o-xylene for synthesis

4-Bromo-o-xylene, 75%, contains 3-Bromo-o-xylene

4-Bromo-o-xylene (contains 3-Bromo-o-xylene)&gt

4-Bromo-o-xylene ISO 9001：2015 REACH

Medetomidine Impurity 1

Medetomidine Impurity 31

Medetomidine Impurity 45

4-Bromo-1,2-dimethylbenzene, 98%

583-71-1

CH32C6H3Br

Halogenated Hydrocarbons

Organic Building Blocks

ARYL HALIDE

Building Blocks

C8

Aryl

Halogen toluene

Benzene derivates

Bromine Compounds

Aromatic Halides (substituted)

K00001