Xylenes
Xylenes are any one of three isomers of dimethylbenzene, or a combination thereof. All are colorless, flammable liquids composed of a central benzene ring with two methyl groups attached at substituents. They can be applied as precursor chemicals and solvents.
Xylenes are flammable petrochemical products that can be produced via catalytic reforming and coal carbonization during coke production and found in crude oil, gasoline, and aircraft fuel. Xylenes were first isolated from wood tar and named by the French chemist Auguste Cahours.
What Is Xylene?
Xylene, more appropriately called xylenes, refers to any single or combination of the three isomers of dimethylbenzene. The isomeric forms are designated as ortho- (o-), meta- (m-), and para- (p-), a reference to the carbon in the benzene ring to which the two methyl groups are attached.
- o-isomer: 1,2-dimethylbenzene
- m-isomer: 1,3-dimethylbenzene
- p-isomer: 1,4-dimethylbenzene
Xylenes are colorless and can be detected by odor at concentrations as low as 0.08 to 3.7 ppm in air and tasted in water at 0.53 to 1.8 ppm.
Refer to the Certificate of Analysis or the Safety Data Sheet for specific information about xylene density and safety hazards.
What Is Xylene Used For?
Industrial Uses
p-Xylene is a precursor to terephthalic acid and dimethyl terephthalate, used to make polyethylene terephthalate plastic bottles and polyester clothing.
Xylene can be used as a solvent and is a common component of ink, rubber, adhesives, and paint and varnish thinners. Xylenes may be used to clean steel, silicon wafers, and integrated circuits. Medical applications include use as a solvent of dental materials and ear wax.
Laboratory Uses
Xylene can be used with dry ice in baths, to remove oil from microscope objectives, and as a cleaning agent or mounting material in histology procedures.
2,5-Dibromo-p-xylene, 98+%
CAS: 1074-24-4 Molecular Formula: C8H8Br2 Molecular Weight (g/mol): 263.96 MDL Number: MFCD00000091 InChI Key: QENIALCDPFDFHX-UHFFFAOYSA-N Synonym: 2,5-dibromo-p-xylene,benzene, 1,4-dibromo-2,5-dimethyl,p-xylene, 2,5-dibromo,2,5-dibromo-1,4-dimethylbenzene,2,5-dimethyl-1,4-dibromobenzene,2,5-dibromo-4-xylene,2,4-dibromobenzene,p-xylene,5-dibromo,pubchem14829,acmc-1c2tg PubChem CID: 66175 IUPAC Name: 1,4-dibromo-2,5-dimethylbenzene SMILES: CC1=CC(Br)=C(C)C=C1Br
M-Xylene, Certified Reference Material, MilliporeSigma™ Supelco™
Pharmaceutical secondary standards for application in quality control. Provides pharma laboratories and manufacturers with a convenient, and cost-effective alternative to the preparation of in-house working standards.
2,3,5,6-Tetrabromo-p-xylene 98.0+%, TCI America™
CAS: 23488-38-2 Molecular Formula: C8H6Br4 Molecular Weight (g/mol): 421.752 MDL Number: MFCD00010353 InChI Key: RXKOKVQKECXYOT-UHFFFAOYSA-N Synonym: 1,2,4,5-Tetrabromo-3,6-dimethylbenzene PubChem CID: 31952 IUPAC Name: 1,2,4,5-tetrabromo-3,6-dimethylbenzene SMILES: CC1=C(C(=C(C(=C1Br)Br)C)Br)Br
Dexmedetomidine Hydrochloride 98.0+%, TCI America™
CAS: 145108-58-3 Molecular Formula: C13H17ClN2 Molecular Weight (g/mol): 236.743 MDL Number: MFCD12912677 InChI Key: VPNGEIHDPSLNMU-MERQFXBCSA-N Synonym: dexmedetomidine hydrochloride,dexmedetomidine hcl,precedex,4-s-alpha,2,3-trimethylbenzyl imidazole monohydrochloride,unii-1018wh7f9i,dexmedetomidine hcl precedex,s-5-1-2,3-dimethylphenyl ethyl-1h-imidazole hydrochloride,dexdor,4-1s-1-2,3-dimethylphenyl ethyl-1h-imidazole hydrochloride PubChem CID: 6918081 ChEBI: CHEBI:31472 IUPAC Name: 5-[(1S)-1-(2,3-dimethylphenyl)ethyl]-1H-imidazole;hydrochloride SMILES: CC1=C(C(=CC=C1)C(C)C2=CN=CN2)C.Cl
6-tert-Butyl-2,4-xylenol 97.0+%, TCI America™
CAS: 1879-09-0 Molecular Formula: C12H18O Molecular Weight (g/mol): 178.28 MDL Number: MFCD00002234 InChI Key: OPLCSTZDXXUYDU-UHFFFAOYSA-N Synonym: 2,4-dimethyl-6-tert-butylphenol,2-tert-butyl-4,6-dimethylphenol,6-tert-butyl-2,4-dimethylphenol,topanol a,6-tert-butyl-2,4-xylenol,6-t-butyl-2,4-xylenol,prodox 340,phenol, 2-1,1-dimethylethyl-4,6-dimethyl,6-t-butyl-2,4-dimethylphenol,2,4-xylenol, 6-tert-butyl PubChem CID: 15884 IUPAC Name: 2-tert-butyl-4,6-dimethylphenol SMILES: CC1=CC(C)=C(O)C(=C1)C(C)(C)C
2,5-Dimethyl-1,4-phenylenediamine 98.0+%, TCI America™
CAS: 6393-01-7 Molecular Formula: C8H12N2 Molecular Weight (g/mol): 136.20 MDL Number: MFCD00052675 InChI Key: BWAPJIHJXDYDPW-UHFFFAOYSA-N Synonym: 2,5-dimethyl-1,4-benzenediamine,4-amino-2,5-dimethylaniline,2,5-dimethyl-1,4-phenylenediamine,2,5-dimethyl-p-phenylenediamine,2,5-diamino-p-xylene,2,5-dimethylphenylene-1,4-diamine,2,5-dimethyl-1,4-benzoquinonediamine,ccris 8118,1,4-dimethylphenylene-2,5-diamine,unii-re400vn2b4 PubChem CID: 160824 ChEBI: CHEBI:53613 IUPAC Name: 2,5-dimethylbenzene-1,4-diamine SMILES: CC1=CC(=C(C=C1N)C)N
5-Iodo-m-xylene 98.0+%, TCI America™
CAS: 22445-41-6 Molecular Formula: C8H9I Molecular Weight (g/mol): 232.06 MDL Number: MFCD00060659 InChI Key: ZLMKEENUYIUKKC-UHFFFAOYSA-N Synonym: 5-iodo-m-xylene,1,3-dimethyl-5-iodobenzene,benzene, 1-iodo-3,5-dimethyl,3,5-dimethyliodobenzene,pubchem3872,acmc-1ccdf,3,5-dimethyl-1-iodobenzene,ksc422q9l,1-iodo-3,5-dimethylbenzene,# PubChem CID: 140924 IUPAC Name: 1-iodo-3,5-dimethylbenzene SMILES: CC1=CC(I)=CC(C)=C1
2-Chloro-m-xylene 98.0+%, TCI America™
CAS: 6781-98-2 Molecular Formula: C8H9Cl Molecular Weight (g/mol): 140.61 MDL Number: MFCD00000565 InChI Key: VDXLAYAQGYCQEO-UHFFFAOYSA-N Synonym: 2-chloro-m-xylene,2,6-dimethylchlorobenzene,m-xylene, 2-chloro,benzene, 2-chloro-1,3-dimethyl,2,6-dimethyl chlorobenzene,2,6-dimethylphenyl chloride,1-chloro-2,6-dimethylbenzene,2,6-dimethylchlorobenzene;2-chloro-m-xylene,2-chloro-meta-xylene,pubchem3643 PubChem CID: 32885 IUPAC Name: 2-chloro-1,3-dimethylbenzene SMILES: CC1=C(C(=CC=C1)C)Cl
3,4-Dimethyldiphenylamine 98.0+%, TCI America™
CAS: 17802-36-7 Molecular Formula: C14H15N Molecular Weight (g/mol): 197.281 MDL Number: MFCD03093248 InChI Key: ACWJKFBBRPYPLL-UHFFFAOYSA-N Synonym: N-Phenyl-3,4-xylidine, Phenyl(3,4-xylyl)amine PubChem CID: 14958605 IUPAC Name: 3,4-dimethyl-N-phenylaniline SMILES: CC1=C(C=C(C=C1)NC2=CC=CC=C2)C
2-Chloro-p-xylene 98.0+%, TCI America™
CAS: 95-72-7 Molecular Formula: C8H9Cl Molecular Weight (g/mol): 140.61 MDL Number: MFCD00000564 InChI Key: KZNRNQGTVRTDPN-UHFFFAOYSA-N Synonym: 2-chloro-p-xylene,1-chloro-2,5-dimethylbenzene,2,5-dimethylchlorobenzene,benzene, 2-chloro-1,4-dimethyl,chloro-p-xylene,p-xylene, 2-chloro,2-chloro-1,4-dimethyl-benzene,unii-3y9k758wlv,chloro-p-xylene van,2-chlor-p-xylol PubChem CID: 32883 IUPAC Name: 2-chloro-1,4-dimethylbenzene SMILES: CC1=CC(=C(C=C1)C)Cl
1-(2,6-Dimethylphenoxy)-2-propanone 95.0+%, TCI America™
CAS: 53012-41-2 Molecular Formula: C11H14O2 Molecular Weight (g/mol): 178.231 MDL Number: MFCD00130266 InChI Key: XDJULAUHYAJQBU-UHFFFAOYSA-N Synonym: (2,6-Dimethylphenoxy)acetone PubChem CID: 104378 IUPAC Name: 1-(2,6-dimethylphenoxy)propan-2-one SMILES: CC1=C(C(=CC=C1)C)OCC(=O)C
2,3-Dimethylbenzoic Acid 98.0+%, TCI America™
CAS: 603-79-2 Molecular Formula: C9H10O2 Molecular Weight (g/mol): 150.177 MDL Number: MFCD00002479 InChI Key: RIZUCYSQUWMQLX-UHFFFAOYSA-N Synonym: hemellitic acid,benzoic acid, 2,3-dimethyl,2,3-dimethylbenzoicacid,2,3-dimethyl benzoic acid,2,3-dimethyl-benzoic acid,unii-7irp8ca267,2,3-dimethylbenzenecarboxylic acid,vic-o-xylylic acid,methyl m-toluic acid,pubchem2549 PubChem CID: 11782 ChEBI: CHEBI:64823 IUPAC Name: 2,3-dimethylbenzoic acid SMILES: CC1=CC=CC(=C1C)C(=O)O
N-tert-Butyl-3,5-dimethylaniline 98.0+%, TCI America™
CAS: 110993-40-3 Molecular Formula: C12H19N Molecular Weight (g/mol): 177.291 InChI Key: HMWHVIXDKZHDEO-UHFFFAOYSA-N Synonym: n-tert-butyl-3,5-dimethylaniline,n-tert-butyl-3,5-xylidine,3,5-dimethyl-n-tert-butylaniline,n-1,1-dimethylethyl-3,5-dimethyl benzenamine,benzenamine,n-1,1-dimethylethyl-3,5-dimethyl PubChem CID: 5242234 IUPAC Name: N-tert-butyl-3,5-dimethylaniline SMILES: CC1=CC(=CC(=C1)NC(C)(C)C)C
2,3-Dimethylaniline Hydrochloride 98.0+%, TCI America™
CAS: 5417-45-8 Molecular Formula: C8H12ClN Molecular Weight (g/mol): 157.641 MDL Number: MFCD00054332 InChI Key: DUQDEEVOZDZJGQ-UHFFFAOYSA-N Synonym: 2,3-Xylidine Hydrochloride PubChem CID: 22239262 IUPAC Name: 2,3-dimethylaniline;hydrochloride SMILES: CC1=C(C(=CC=C1)N)C.Cl
![[4-Chloro-6-(2,3-xylidino)-2-pyrimidinylthio]acetic Acid 99.0+%, TCI America™](https://assets.fishersci.com/TFS-Assets/CCG/Chemical-Structures/chemical-structure-cas-50892-23-4.jpg-250.jpg)
[4-Chloro-6-(2,3-xylidino)-2-pyrimidinylthio]acetic Acid 99.0+%, TCI America™
CAS: 50892-23-4 Molecular Formula: C14H14ClN3O2S Molecular Weight (g/mol): 323.80 MDL Number: MFCD00191335 InChI Key: SZRPDCCEHVWOJX-UHFFFAOYSA-N Synonym: pirinixic acid,4-chloro-6-2,3-xylidino-2-pyrimidinylthio acetic acid,pirinixic acid inn,unii-86c4mrt55a,ccris 133,acide pirinixique inn-french,acido pirinixico inn-spanish,acidum pirinixicum inn-latin,acetic acid, 4-chloro-6-2,3-dimethylphenyl amino-2-pyrimidinyl thio PubChem CID: 5694 ChEBI: CHEBI:32509 IUPAC Name: 2-({4-chloro-6-[(2,3-dimethylphenyl)amino]pyrimidin-2-yl}sulfanyl)acetic acid SMILES: CC1=CC=CC(NC2=CC(Cl)=NC(SCC(O)=O)=N2)=C1C