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alpha,alpha'-Dibromo-p-xylene

alpha,alpha'-Dibromo-p-xylene Structure
alpha,alpha'-Dibromo-p-xylene structure
CAS No.
623-24-5
Chemical Name:
alpha,alpha'-Dibromo-p-xylene
Synonyms
1,4-BIS(BROMOMETHYL)BENZENE;P-XYLYLENE DIBROMIDE;α,α′-Dibromo-p-xylene;P-XYLENE DIBROMIDE;1,4-bis(bromomethyl)-benzen;NSC 6226;O-dibroMo-benzyl;AKOS BBS-00000840;P-XYLYLENE BROMIDE;α,α'-Dibromo-p-xyL
CBNumber:
CB7235218
Molecular Formula:
C8H8Br2
Molecular Weight:
263.96
MDL Number:
MFCD00000182
MOL File:
623-24-5.mol
MSDS File:
SDS
Last updated:2026-01-13 11:24:50
Product description Number Pack Size Price
α,α′-Dibromo-p-xylene purum, ≥98.0% (GC) 34440 25g $120
α,α′-Dibromo-p-xylene purum, ≥98.0% (GC) 34440 100g $337
α,α'-Dibromo-p-xylene D0216 25G $97
α,α′-Dibromo-p-xylene 97% D44804 5g $57.9
α,α′-Dibromo-p-xylene 97% D44804 25g $130
More product size
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alpha,alpha'-Dibromo-p-xylene Properties

Melting point 143-145 °C(lit.)
Boiling point 245 °C(lit.)
Density 2.012
refractive index 1.614
Flash point 155-158°C/14mm
storage temp. Keep in dark place,Sealed in dry,Room Temperature
solubility dioxane: soluble1g/10 mL (hot)
form Crystalline Powder and Coarse Crystals
color White to beige
Water Solubility soluble, hydrolyses
Sensitive Lachrymatory
BRN 1100019
InChI 1S/C8H8Br2/c9-5-7-1-2-8(6-10)4-3-7/h1-4H,5-6H2
InChIKey RBZMSGOBSOCYHR-UHFFFAOYSA-N
SMILES BrCc1ccc(CBr)cc1
CAS DataBase Reference 623-24-5(CAS DataBase Reference)
NIST Chemistry Reference Benzene, 1,4-bis(bromomethyl)-(623-24-5)
EPA Substance Registry System 1,4-Bis(bromomethyl)benzene (623-24-5)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
target organs Respiratory system
PPE Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Hazard Codes  C
Risk Statements  34-22
Safety Statements  26-36/37/39-45
RIDADR  UN 3448 6.1/PG 2
WGK Germany  3
F  8-19-21
Hazard Note  Corrosive/Lachrymatory
TSCA  TSCA listed
HazardClass  8
PackingGroup  III
HS Code  29039990
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
Hazard Classifications Eye Irrit. 2
Skin Irrit. 2
STOT SE 3
Limited Quantities 100ml (liquid) or 0.5 Kg (solid)
Excepted Quantities Max Inner Pack (1g or 1ml) and Max Outer Pack (500g or 500ml)
NFPA 704
1
3 1

alpha,alpha'-Dibromo-p-xylene price More Price(27)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 34440 α,α′-Dibromo-p-xylene purum, ≥98.0% (GC) 623-24-5 25g $120 2025-07-31 Buy
Sigma-Aldrich 34440 α,α′-Dibromo-p-xylene purum, ≥98.0% (GC) 623-24-5 100g $337 2025-07-31 Buy
TCI Chemical D0216 α,α'-Dibromo-p-xylene 623-24-5 25G $97 2025-07-31 Buy
Sigma-Aldrich D44804 α,α′-Dibromo-p-xylene 97% 623-24-5 5g $57.9 2025-07-31 Buy
Sigma-Aldrich D44804 α,α′-Dibromo-p-xylene 97% 623-24-5 25g $130 2025-07-31 Buy
Product number Packaging Price Buy
34440 25g $120 Buy
34440 100g $337 Buy
D0216 25G $97 Buy
D44804 5g $57.9 Buy
D44804 25g $130 Buy

alpha,alpha'-Dibromo-p-xylene Chemical Properties,Uses,Production

Chemical Properties

white to light yellow crystal powde

Uses

It is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals.

Synthesis Reference(s)

Tetrahedron Letters, 35, p. 7055, 1994 DOI: 10.1016/0040-4039(94)88224-X

Synthesis

P-XYLENE

106-42-3

alpha,alpha'-Dibromo-p-xylene

623-24-5

2.3.2.1 Synthesis of 1,4-bis(bromomethyl)benzene 4 In a 250 mL round bottom flask, p-xylene 1 (5 mL, 40.78 mmol) and 70 mL carbon tetrachloride were added as solvents. The flask was heated in an oil bath. Subsequently, N-bromosuccinimide (29.86 g, 167.80 mmol) and benzoyl peroxide (5.83 g, 24.08 mmol) were added sequentially to the flask. The reaction mixture was refluxed at 70 °C for 12 hours. Upon completion of the reaction, the solution was cooled to room temperature, at which point a solid imide precipitated, which was removed by filtration. The filtrate was distilled under reduced pressure to remove the solvent to give the light yellow solid product 1,4-bis(bromomethyl)benzene 4 in 90% yield with a melting point of 142-144 °C. The product was analyzed by FT-IR (KBr, cm^-1) showing 568 (C-Br stretching vibration), 1625 (C=C stretching vibration); 1H NMR (300 MHz, CDCl3) showing 4.28 (s, 4H, methylene proton), 7.18 (s, 4H, aromatic proton).

Purification Methods

Distil it under a vacuum and recrystallise it from EtOH, *benzene or chloroform. [Wenner Org Chem 17 527 1952, Beilstein 5 H 385, 5 I 187, 5 II 301, 5 III 859, 5 IV 970.]

References

[1] Tetrahedron Letters, 2000, vol. 41, # 32, p. 6241 - 6244
[2] Tetrahedron Letters, 2005, vol. 46, # 41, p. 7047 - 7050
[3] Synthetic Communications, 2009, vol. 39, # 13, p. 2304 - 2309
[4] Journal of Molecular Catalysis A: Chemical, 2012, vol. 363-364, p. 81 - 89,9
[5] Polyhedron, 2012, vol. 47, # 1, p. 151 - 164

alpha,alpha'-Dibromo-p-xylene synthesis

623-27-8
623-24-5
Synthesis of alpha,alpha'-Dibromo-p-xylene from Terephthalaldehyde

alpha,alpha'-Dibromo-p-xylene Preparation Products And Raw materials

Raw materials

Benzoyl peroxide P-XYLENE N-Bromosuccinimide 1,4-Benzenedimethanol Carbon tetrachloride
Dichloromethane Phosphorus tribromide NISTC502863 Benzene, 1-(dibromomethyl)-4-methyl- Bis(bromomethyl) ether

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Preparation Products

1,4-Bis(imidazole-l-ylmethyl)benzene 1,4-BENZENEDIMETHANETHIOL 1,4-Phenylenediacetonitrile 1,4-Bis(3-formylphenoxy)xylene

alpha,alpha'-Dibromo-p-xylene Suppliers

Global( 369)Suppliers
Supplier Tel Email Country ProdList Advantage
Henan Fengda Chemical Co., Ltd 		+86-371-86557731 +86-13613820652 info@fdachem.com China 20126 58
Capot Chemical Co.,Ltd. 		+86-（0）57185586718; +8613336195806 sales@capot.com China 29735 60
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21595 55
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 923 55
career henan chemical co 		+86-0371-86658258 +8613203830695 sales@coreychem.com China 29830 58
Win-Win Chemical CO., Limited 		0086-577-64498589 sales@win-winchemical.com CHINA 998 58
Changzhou Ansciep Chemical Co., Ltd. 		+86 519 86305871 sales@ansciepchem.com CHINA 4241 58
Hubei xin bonus chemical co. LTD 		86-13657291602 linda@hubeijusheng.com CHINA 22963 58
CONIER CHEM AND PHARMA LIMITED 		+8618523575427 sales@conier.com China 49977 58
Supplier Advantage
Henan Fengda Chemical Co., Ltd 		58
Capot Chemical Co.,Ltd. 		60
Henan Tianfu Chemical Co.,Ltd. 		55
ATK CHEMICAL COMPANY LIMITED 		60
Speranza Chemical Co., Ltd. 		55
career henan chemical co 		58
Win-Win Chemical CO., Limited 		58
Changzhou Ansciep Chemical Co., Ltd. 		58
Hubei xin bonus chemical co. LTD 		58
CONIER CHEM AND PHARMA LIMITED 		58

View Lastest Price from alpha,alpha'-Dibromo-p-xylene manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
alpha,alpha'-Dibromo-p-xylene pictures 2025-09-25 alpha,alpha'-Dibromo-p-xylene
623-24-5
 US $100.00-1.00 / KG 1KG 99% g-kg-tons, free sample is available Henan Fengda Chemical Co., Ltd
p-Xylylene dibromide pictures 2024-05-07 p-Xylylene dibromide
623-24-5
 US $2200.00 / Kg 1Kg 98 500 Kg R&D Scientific Inc.
P-Xylylene dibromide pictures 2022-02-22 P-Xylylene dibromide
623-24-5
 US $0.00 / KG 1KG 97.6% 100 tons Honest Joy Holdings Limited

alpha,alpha'-Dibromo-p-xylene Spectrum

alpha,alpha'-Dibromo-p-xylene(623-24-5)MSalpha,alpha'-Dibromo-p-xylene(623-24-5)1HNMRalpha,alpha'-Dibromo-p-xylene(623-24-5)IR1alpha,alpha'-Dibromo-p-xylene(623-24-5)IR2alpha,alpha'-Dibromo-p-xylene(623-24-5)Raman

623-24-5(alpha,alpha'-Dibromo-p-xylene)Related Search:

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1,4-bis(bromomethyl)-benzen 1,4-Di(brommethyl)-benzen 1,4-Dibromomethylbenzene p-(Bromomethyl)benzene p-alpha,alpha'-Dibromoxylene p-Bis(bromomethyl)benzene p-Xylene, alpha,alpha'-dibromo- P-XYLYLENE BROMIDE P-XYLYLENE DIBROMIDE P-XYLIDENE DIBROMIDE P-XYLENE DIBROMIDE OMEGA,OMEGA'-DIBROMO-P-XYLENE LABOTEST-BB LT01772888 ALPHA,ALPHA'-DIBROMO-4-XYLENE alpha,alpha'-DibroMo-p-xylene 97% α,α'-Dibromo-p-xylene ALPHA,ALPHA'-DIBROMO-1,4-XYLENE AKOS BBS-00000840 Benzene, 1,4-bis(bromomethyl)- ALPHA,ALPHA'-DIBROM-P-XYLOL p-Xylylenedibromide,97% à,à'-dibromo-p-xylene 1,4-Bis(bromomethyl)benzene, p-Xylylene dibromide P-XYLYENE DIBROMIDE ALPHA,ALPHA''-DIBROMO-P-XYLENE / 1,4-BIS(BROMOMETHYL)-BENZENE 1,4-BIS(BROMOMETHYL)BENZENE 1,4-Xylylene dibromide p-Di(bromomethyl)benzene 1,4-Phenylenebis(bromomethane) alpha,alpha'-Dibromo-p-xylene,97% 4-BroMoMethylbenzyl BroMide NSC 6226 p-Xylylene Bromide p-Xylylene Dibromide 1,4-Bis(bromomethyl)benzene p-xylylenen dibromide α,α′-Dibromo-p-xylene ,97% alpha,alpha'-Dibromo |á-|á-Dibromo-P-Xylene alpha,alpha'-Dibromo-p-xylene, p-Xylylene dibromide O-dibroMo-benzyl 1,4-dibenzyl broMide α,α'-Dibromo-p-xyL α,α'-Dibromo-p-xylene > α,α'-Dibromo-p-xylene, 97%, reagent grade Plerixafor 1,4-bis(Bromomethyl)benzene α,α′-Dibromo-p-xylene alpha,alpha'-Dibromo-p-xylene ISO 9001：2015 REACH 1,4-bis(Bromomethyl)benzene 1,4-bis(Bromomethyl)benzene Alfa,alfa-Dibromo para Xylene Alfa, Alfa-Dibromo p-Xylene ?,?'-dibromo-p-xylene RSSYY(Perospirone Hydrochloride Hydrate)-3 alpha,alpha'-Dibromo-p-dimethylbenzene alpha,alpha'-Dibromo-p-xylene α,α'-Dibromo-p-xylene Methisosildenafil Impurity 54 a,a'-Dibromo-p-xylene α,α′-Dibromo-p-xylene alpha,alpha'-Dibromo-p-xylene