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1,4-Dibromo-2,5-dimethylbenzene

1,4-Dibromo-2,5-dimethylbenzene Structure
1,4-Dibromo-2,5-dimethylbenzene structure
CAS No.
1074-24-4
Chemical Name:
1,4-Dibromo-2,5-dimethylbenzene
Synonyms
2,5-DIBROMO-P-XYLENE;2,5-Dibromo-xylene;2,5-DIBROMO-4-XYLENE;1,4-Dibromo-2,5-dime;2,5-dibromo-2-xylene;p-Xylene, 2,5-dibromo-;1,4-Dibromo-2,5-dimethyL;2,5-Dibromo-p-xylene >2,5-Dibromo-p-xylene 99%;2,5-DIBROMO-P-XYLENE, 98+%
CBNumber:
CB9345577
Molecular Formula:
C8H8Br2
Molecular Weight:
263.96
MDL Number:
MFCD00000091
MOL File:
1074-24-4.mol
MSDS File:
SDS
Last updated:2026-05-28 05:26:12
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1,4-Dibromo-2,5-dimethylbenzene Properties

Melting point 72-74 °C(lit.)
Boiling point 261 °C(lit.)
Density 1.7485 (rough estimate)
refractive index 1.543-1.545
storage temp. Sealed in dry,Room Temperature
form powder to crystal
color White to Light yellow
Water Solubility Soluble in toluene, hot ethanol and hot methanol.Insoluble in water.
BRN 2080433
InChI InChI=1S/C8H8Br2/c1-5-3-8(10)6(2)4-7(5)9/h3-4H,1-2H3
InChIKey QENIALCDPFDFHX-UHFFFAOYSA-N
SMILES C1(Br)=CC(C)=C(Br)C=C1C
CAS DataBase Reference 1074-24-4(CAS DataBase Reference)
NIST Chemistry Reference Benzene, 1,4-dibromo-2,5-dimethyl-(1074-24-4)
EPA Substance Registry System Benzene, 1,4-dibromo-2,5-dimethyl- (1074-24-4)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)Environment (GHS09)
GHS07,GHS09
Signal word  Warning
Hazard statements  H315-H319-H335-H411
Precautionary statements  P261-P264-P271-P273-P302+P352-P305+P351+P338
target organs Respiratory system
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  36/37/38-51/53
Safety Statements  26-37/39-61
RIDADR  UN 2811 6.1/PG 1
WGK Germany  3
TSCA  TSCA listed
HS Code  29039990
Storage Class 11 - Combustible Solids
Hazard Classifications Aquatic Chronic 2
Eye Irrit. 2
Skin Irrit. 2
STOT SE 3
NFPA 704
0
2 0

1,4-Dibromo-2,5-dimethylbenzene price More Price(52)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 116157 1,4-Dibromo-2,5-dimethylbenzene 98% 1074-24-4 25g $72.4 2026-04-30 Buy
Sigma-Aldrich 116157 1,4-Dibromo-2,5-dimethylbenzene 98% 1074-24-4 100g $193 2026-04-30 Buy
TCI Chemical D1841 2,5-Dibromo-p-xylene 1074-24-4 25G $88 2026-04-30 Buy
TCI Chemical D1841 2,5-Dibromo-p-xylene 1074-24-4 100G $344 2026-04-30 Buy
Biosynth FD67669 1,4-Dibromo-2,5-dimethylbenzene 1074-24-4 50g $150 2026-06-04 Buy
Product number Packaging Price Buy
116157 25g $72.4 Buy
116157 100g $193 Buy
D1841 25G $88 Buy
D1841 100G $344 Buy
FD67669 50g $150 Buy

1,4-Dibromo-2,5-dimethylbenzene Chemical Properties,Uses,Production

Chemical Properties

white to slightly yellow shiny crystalline powder

Uses

1,4-dibromo-2,5-dimethylbenzene has been used in the preparation of 4,4″-diformyl-2′,5′-dimethyl-1,1′.4′,1″-terphenyl. It has also been used in the preparation of 1,4-diformyl-2,5-dimethylbenzene.

Synthesis

P-XYLENE

106-42-3

1,4-Dibromo-2,5-dimethylbenzene

1074-24-4

The general procedure for the synthesis of 2,5-dibromo-1,4-dimethylbenzene from p-xylene was as follows: dichloromethane (50 mL) was added to a 150 mL two-necked round-bottomed flask and p-xylene (16.96 g, 0.16 mol, 19.8 mL) was accurately weighed and added to it. Subsequently, iodine (0.1 g, 0.8 mmol) was added to the mixture. An air condenser tube was fitted to one neck of the flask and connected to a tail gas recovery unit; the other neck was fitted with a constant pressure dropping funnel. Accurately measure the liquid bromine (18 mL) and transfer it to the constant-pressure dropping funnel, covering the top layer of the bromine solution with a layer of water (about 0.3-0.5 cm) to prevent volatilization of the bromine. The bottle was stoppered tightly and the temperature of the reaction system was controlled at 12°C under strong stirring and light protection. Slowly add liquid bromine dropwise to the reaction mixture (dropwise addition time is controlled at 40 to 50 minutes), taking care to avoid water droplets entering the reaction solution. The reaction lasted for 18 hours. Upon completion of the reaction, 40 mL of 25% aqueous KOH solution was added and stirred vigorously for 30 minutes. The reaction mixture was transferred to a separatory funnel, and the lower organic phase was separated and washed twice (50 mL each) with deionized water. The organic phase was dried with anhydrous CaCl2, filtered and the solvent was removed under reduced pressure. The residue was recrystallized twice (300 mL each) with ethanol to give white needle-like crystals. The yield was 96.5% (40.44 g).

References

[1] Patent: CN105085340, 2017, B. Location in patent: Paragraph 0037; 0038
[2] Crystal Growth and Design, 2016, vol. 16, # 7, p. 3993 - 4004
[3] Organic Letters, 2011, vol. 13, # 6, p. 1462 - 1465
[4] Patent: CN107721905, 2018, A. Location in patent: Paragraph 0024
[5] Patent: CN108440386, 2018, A. Location in patent: Paragraph 0041; 0044; 0045

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

Raw materials

p-Xylene Dichloromethane iodine Water

Preparation Products

2,5-Dibromoterephthalic acid diethyl ester 1,4-dibromo-2,5-divinylbenzene 2,5-Dimethylterephthalonitrile 4-BroMo-2,5-diMethylbenzaldehyde

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

Global( 320)Suppliers
Supplier Tel Email Country ProdList Advantage
NORANA GROUP 027-59209883 17386138556 service@nornachem.com China 4874 58
Nanjing XiLang Chemical Products Co., Ltd. 18936048580 chemxilang@163.com China 3909 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
INTATRADE GmbH +49 3493/605464 sales@intatrade.de Germany 3563 66
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
ShangHai DEMO Chemical Co.,Ltd 400-021-7337 2355568890 sales@demochem.com China 2569 57
Ark Pharm, Inc. 847-367-3680 sales@arkpharminc.com United States 1669 56
Beijing HwrkChemical Technology Co., Ltd 89508211 18501085097 sales.bj@hwrkchemical.com China 9407 55
Supplier Advantage
NORANA GROUP 58
Nanjing XiLang Chemical Products Co., Ltd. 58
J & K SCIENTIFIC LTD. 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 62
INTATRADE GmbH 66
Alfa Aesar 84
TCI (Shanghai) Development Co., Ltd. 81
ShangHai DEMO Chemical Co.,Ltd 57
Ark Pharm, Inc. 56
Beijing HwrkChemical Technology Co., Ltd 55

View Lastest Price from 1,4-Dibromo-2,5-dimethylbenzene manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
1,4-dibromo-2,5-dimethyl benzene pictures 2026-09-11 1,4-dibromo-2,5-dimethyl benzene
1074-24-4
 $60.00 1KG 98% 300MT/year Speranza Chemical Co., Ltd.
1,4-Dibromo-2,5-dimethylbenzene pictures 2026-09-02 1,4-Dibromo-2,5-dimethylbenzene
1074-24-4
 $1.00-100.00 1KG 99% Henan Fengda Chemical Co., Ltd
1,4-Dibromo-2,5-dimethylbenzene pictures 2026-05-28 1,4-Dibromo-2,5-dimethylbenzene
1074-24-4
 $10.00-30.00 10kg 99% 100000kg Hebei Chuanghai Biotechnology Co,.LTD

1,4-Dibromo-2,5-dimethylbenzene Spectrum

1,4-Dibromo-2,5-dimethylbenzene(1074-24-4)MS1,4-Dibromo-2,5-dimethylbenzene(1074-24-4)1HNMR1,4-Dibromo-2,5-dimethylbenzene(1074-24-4)13CNMR1,4-Dibromo-2,5-dimethylbenzene(1074-24-4)IR11,4-Dibromo-2,5-dimethylbenzene(1074-24-4)IR21,4-Dibromo-2,5-dimethylbenzene(1074-24-4)Raman

1074-24-4(1,4-Dibromo-2,5-dimethylbenzene)Related Search:

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2,5-DIBROMO-4-XYLENE 1,4-dibromo-2,5-dimethyl-benzen 2,5-Dibromo-1,4-dimethylbenzene 2,5-Dimethyl-1,4-dibromobenzene Benzene,1,4-dibromo-2,5-dimethyl- p-Xylene, 2,5-dibromo- 1,4-DIBROMO-2,5-DIMETHYLBENZENE 2,5-DIBROMO-P-XYLENE, 98+% 1,4-Dibromo-2,5-dimethylbenzene,99% 1,4-Dibromo-2,5-dimethyL 1,4-DibroMo-2,5-diMethylbenzene, 98+% 1,4-DibroMo-2,5-diMethylbenzene, 99% 50GR 1,4-Dibromo-2,5-dime Benzene,1,4-dibromo-2,5-dimet 2,5-Dibromo-p-xylene > 1,4-Dibromo-2,5-dimethylbenzene ISO 9001：2015 REACH 2,5-Dibromo-xylene 2,5-dibromo-2-xylene 1,4-Dibromo-2,5-dimethylbenzene, 95% 2,5-Dibromo-p-xylene 99% 2,5-Dibromo-4-methyl-toluene 2,5-DIBROMO-P-XYLENE 1074-24-4 CH32C6H2Br2 C8H8Br Organic Building Blocks Halogenated Hydrocarbons Building Blocks C8 Aryl Aryl Building Blocks C8 Chemical Synthesis Halogenated Hydrocarbons Organic Building Blocks Bromine Compounds Fluorobenzene Aromatic Halides (substituted)