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1,4-Dibromo-2,5-dimethylbenzene

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

CAS No.: 1074-24-4

Chemical Name:: 1,4-Dibromo-2,5-dimethylbenzene

Synonyms: 2,5-Dibromo-xylene;2,5-DIBROMO-4-XYLENE;2,5-DIBROMO-P-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:2025-07-24 18:13:42

Product description	Number	Pack Size	Price
1,4-Dibromo-2,5-dimethylbenzene 98%	116157	25g	$63.1
1,4-Dibromo-2,5-dimethylbenzene 98%	116157	100g	$90.5
2,5-Dibromo-p-xylene	D1841	25G	$151
2,5-Dibromo-p-xylene	D1841	100G	$452
1,4-Dibromo-2,5-dimethylbenzene	D425570	10g	$65
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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)

GHS07,GHS09

Signal word

Warning

Hazard statements

H315-H319-H335-H411

Precautionary statements

P261-P264-P271-P273-P302+P352-P305+P351+P338

Hazard Codes

Risk Statements

36/37/38-51/53

Safety Statements

26-37/39-61

RIDADR

UN 2811 6.1/PG 1

WGK Germany

TSCA

Yes

HS Code

29039990

NFPA 704

	0
2		0

1,4-Dibromo-2,5-dimethylbenzene price More Price(30)

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	$63.1	2025-07-31	Buy
Sigma-Aldrich	116157	1,4-Dibromo-2,5-dimethylbenzene 98%	1074-24-4	100g	$90.5	2025-07-31	Buy
TCI Chemical	D1841	2,5-Dibromo-p-xylene	1074-24-4	25G	$151	2025-07-31	Buy
TCI Chemical	D1841	2,5-Dibromo-p-xylene	1074-24-4	100G	$452	2025-07-31	Buy
TRC	D425570	1,4-Dibromo-2,5-dimethylbenzene	1074-24-4	10g	$65	2021-12-16	Buy

Product number	Packaging	Price	Buy
116157	25g	$63.1	Buy
116157	100g	$90.5	Buy
D1841	25G	$151	Buy
D1841	100G	$452	Buy
D425570	10g	$65	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

106-42-3

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( 327)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Hebei Chuanghai Biotechnology Co,.LTD	+86-13131129325	sales1@chuanghaibio.com	China	5251	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20173	58
Capot Chemical Co.,Ltd.	+86-（0）57185586718; +8613336195806	sales@capot.com	China	29735	60
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	33024	60
Speranza Chemical Co., Ltd.	+86-86-075521030354 +8618688942810	sophieliu@speranzachem.com	China	925	55
Zhejiang ZETian Fine Chemicals Co. LTD	+8618957127338	stella@zetchem.com	China	2161	58
Changzhou Ansciep Chemical Co., Ltd.	+86 519 86305871	sales@ansciepchem.com	CHINA	4241	58
Nanjing Dolon Biotechnology Co.,Ltd.	18905173768	52513593@qq.com	CHINA	2972	58
Hubei xin bonus chemical co. LTD	86-13657291602	linda@hubeijusheng.com	CHINA	22963	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58

Supplier	Advantage
Hebei Chuanghai Biotechnology Co,.LTD	58
Henan Fengda Chemical Co., Ltd	58
Capot Chemical Co.,Ltd.	60
ATK CHEMICAL COMPANY LIMITED	60
Speranza Chemical Co., Ltd.	55
Zhejiang ZETian Fine Chemicals Co. LTD	58
Changzhou Ansciep Chemical Co., Ltd.	58
Nanjing Dolon Biotechnology Co.,Ltd.	58
Hubei xin bonus chemical co. LTD	58
Alchem Pharmtech,Inc.	58

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

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2025-11-10	1,4-dibromo-2,5-dimethyl benzene 1074-24-4	US $60.00 / KG	1KG	98%	300MT/year	Speranza Chemical Co., Ltd.
2025-09-25	1,4-Dibromo-2,5-dimethylbenzene 1074-24-4	US $100.00-1.00 / KG	1KG	99%	g-kg-tons, free sample is available	Henan Fengda Chemical Co., Ltd
2025-05-26	1,4-Dibromo-2,5-dimethylbenzene 1074-24-4	US $30.00-10.00 / kg	10kg	99%	100000kg	Hebei Chuanghai Biotechnology Co,.LTD

1,4-dibromo-2,5-dimethyl benzene
1074-24-4
US $60.00 / KG
98%
Speranza Chemical Co., Ltd.

1,4-Dibromo-2,5-dimethylbenzene
1074-24-4
US $100.00-1.00 / KG
99%
Henan Fengda Chemical Co., Ltd

1,4-Dibromo-2,5-dimethylbenzene
1074-24-4
US $30.00-10.00 / kg
99%
Hebei Chuanghai Biotechnology Co,.LTD

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

1,4-Dibromo-2,5-dimethylbenzene(1074-24-4)MS 1,4-Dibromo-2,5-dimethylbenzene(1074-24-4)¹HNMR 1,4-Dibromo-2,5-dimethylbenzene(1074-24-4)¹³CNMR 1,4-Dibromo-2,5-dimethylbenzene(1074-24-4)IR1 1,4-Dibromo-2,5-dimethylbenzene(1074-24-4)IR2 1,4-Dibromo-2,5-dimethylbenzene(1074-24-4)Raman

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2,5-DIBROMO-P-XYLENE 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-diMethylbenzene, 98+% 1,4-DibroMo-2,5-diMethylbenzene, 99% 50GR 1,4-Dibromo-2,5-dime 1,4-Dibromo-2,5-dimethyL 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% 1074-24-4 CH32C6H2Br2 C8H8Br Halogenated Hydrocarbons Building Blocks C8 Aryl Organic Building Blocks Aryl Building Blocks C8 Chemical Synthesis Halogenated Hydrocarbons Organic Building Blocks Bromine Compounds Fluorobenzene Aromatic Halides (substituted)