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Safety Information

34440

Sigma-Aldrich

α,α′-Dibromo-p-xylene

purum, ≥98.0% (GC)

Synonym(s):

DMF, 1,4-Bis(bromomethyl)benzene, p-Xylylene dibromide

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About This Item

Linear Formula:
C6H4(CH2Br)2
CAS Number:
623-24-5
Molecular Weight:
263.96
Beilstein:
1100019
EC Number:
210-781-1
MDL number:
MFCD00000182
UNSPSC Code:
12352100
PubChem Substance ID:
329754742
NACRES:
NA.22

grade

purum

Quality Level

100

Assay

≥98.0% (GC)

form

crystals

bp

245 °C (lit.)

mp

143-145 °C (lit.)

solubility

dioxane: soluble 1 g/10 mL (hot)

SMILES string

BrCc1ccc(CBr)cc1

InChI

1S/C8H8Br2/c9-5-7-1-2-8(6-10)4-3-7/h1-4H,5-6H2

InChI key

RBZMSGOBSOCYHR-UHFFFAOYSA-N

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Application

α, α′-Dibromo-p-xylene may be used in the preparation of:
  • third-generation bis(1-pyrazolyl)methane ligands
  • 5,5′-[(p-phenyl­enedimethyl­ene)dithio]bis­(1-phen­yl-1H-1,2,3,4-tetra­zole)
  • new bis 1,10-phenanthroline ligand (composed of two subunits of 7-(p-anisyl)-1,10-phenanthroline (phen) joined by p-(CH2)2C6H4(CH2)2 space groups at 4 positions), via Skraup synthesis
  • stereoisomers of α,α′-bis[3-(N,N-diethylcarbamoyl)-piperidino]-p-xylene

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

34440-2.5L:
34440-25G-F:
34440-BULK-F:
34440-VAR-F:
34440-100G-F:

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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5, 5'-[(p-Phenylenedimethylene) dithio] bis (1-phenyl-1H-1, 2, 3, 4-tetrazole).
Wang W, et al.
Acta Crystallographica Section E, Structure Reports Online, 61(4), 1163-1164 (2005)
Jai Young Lee et al.
Acta crystallographica. Section E, Structure reports online, 65(Pt 10), o2369-o2370 (2009-01-01)
The title 22-crown-6 unit, C(26)H(28)O(6), comprising of three benzo groups and triethyl-ene glycol, was prepared by the reaction of α,α'-dibromo-p-xylene with 1,8-bis-(2-hydroxy-phen-oxy)-3,6-dioxaoctane in the presence of Cs(2)CO(3) with tetra-hydro-furan (THF) and recrystallized from dichloro-methane-hexane (1:20 v/v) at room temperature. In
Daniel L Reger et al.
Inorganic chemistry, 48(3), 936-945 (2009-01-06)
The third-generation bis(1-pyrazolyl)methane ligands p-C(6)H(4)[CH(2)OCH(2)CH(pz)(2)](2) (L(p), pz = pyrazolyl ring) and m-C(6)H(4)[CH(2)OCH(2)CH(pz)(2)](2) (L(m)) have been synthesized by the reaction of (pz)(2)CHCH(2)OH with NaH followed by alpha,alpha'-dibromo-p-xylene or alpha,alpha'-dibromo-m-xylene. The reaction of L(p) with AgBF(4), AgPF(6), and AgO(3)SCF(3) yields the new
D Pomeranc et al.
Journal of the American Chemical Society, 123(49), 12215-12221 (2001-12-06)
A bis-chelating ligand (L1), made of two 7-(p-anisyl)-1,10-phenanthroline (phen) subunits connected with a p-(CH(2))(2)C(6)H(4)(CH(2))(2) spacer through their 4 positions, has been prepared, using Skraup syntheses and reaction of the anion of 4-methyl-7-anisyl-1,10-phenanthroline with alpha,alpha'-dibromo-p-xylene. Its Fe(II) complex, [FeL1(dmbp)](PF(6))(2), was prepared
X Zheng et al.
Chirality, 7(2), 90-95 (1995-01-01)
The stereoisomers of alpha,alpha'-bis[3-(N,N-diethylcarbamoyl)-piperidino]-p-xylene (1) were synthesized. Rac ethyl nipecotate was resolved by diastereomeric (-)-D- and (+)-L-tartrate salt formation. The enantiomeric esters were hydrolyzed to the corresponding nipecotic acids, which were then converted into t-BOC derivatives. Treatment of the latter

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