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.
4,5-Bis(mercaptomethyl)-o-xylene 96.0+%, TCI America™
CAS: 10230-61-2 Molecular Formula: C10H14S2 Molecular Weight (g/mol): 198.34 MDL Number: MFCD00004869 InChI Key: NNGQXIUDFKIVKI-UHFFFAOYSA-N Synonym: 1,2-Dimethyl-4,5-bis(mercaptomethyl)benzene, 4,5-Dimethyl-o-xylylenedithiol, Durene-alpha1,alpha2-dithiol PubChem CID: 82471 IUPAC Name: [4,5-dimethyl-2-(sulfanylmethyl)phenyl]methanethiol SMILES: CC1=CC(CS)=C(CS)C=C1C
m-Xylene 99.0+%, TCI America™
CAS: 108-38-3 Molecular Formula: C8H10 Molecular Weight (g/mol): 106.17 MDL Number: MFCD00008536 InChI Key: IVSZLXZYQVIEFR-UHFFFAOYSA-N Synonym: m-xylene,1,3-dimethylbenzene,m-xylol,m-dimethylbenzene,meta-xylene,m-methyltoluene,3-xylene,benzene, 1,3-dimethyl,1,3-dimethylbenzol,santosol 150 PubChem CID: 7929 ChEBI: CHEBI:28488 IUPAC Name: 1,3-xylene SMILES: CC1=CC(C)=CC=C1
2,4-Dimethyl-6-nitrophenol 98.0+%, TCI America™
CAS: 14452-34-7 Molecular Formula: C8H9NO3 Molecular Weight (g/mol): 167.16 MDL Number: MFCD00191633 InChI Key: KJRCHILWKQLEBC-UHFFFAOYSA-N Synonym: 6-nitro-2,4-xylenol,phenol, 2,4-dimethyl-6-nitro,acmc-1buww,intermediates-zcf02108,2-nitro-4,6-dimethylphenol,ksc524c1l,phenol,2,4-dimethyl-6-nitro,4,6-dimethyl-2-nitrophenol,2,4-dimethyl-6-nitrophenol 2-nitro-4,6-dimethylphenol PubChem CID: 84450 IUPAC Name: 2,4-dimethyl-6-nitrophenol SMILES: CC1=CC(C)=C(O)C(=C1)[N+]([O-])=O
2,4-Dimethyldiphenylamine 98.0+%, TCI America™
CAS: 25078-04-0 Molecular Formula: C14H15N Molecular Weight (g/mol): 197.281 InChI Key: BWYYRZBQXLCZJL-UHFFFAOYSA-N Synonym: N-Phenyl-2,4-xylidine, Phenyl(2,4-xylyl)amine PubChem CID: 10559845 IUPAC Name: 2,4-dimethyl-N-phenylaniline SMILES: CC1=CC(=C(C=C1)NC2=CC=CC=C2)C
1,5-Dibromo-2,4-dimethylbenzene 97.0+%, TCI America™
CAS: 615-87-2 Molecular Formula: C8H8Br2 Molecular Weight (g/mol): 263.96 MDL Number: MFCD00154984 InChI Key: SOYPUUFPUFRXRI-UHFFFAOYSA-N Synonym: 4,6-Dibromo-m-xylene PubChem CID: 621990 IUPAC Name: 1,5-dibromo-2,4-dimethylbenzene SMILES: CC1=CC(C)=C(Br)C=C1Br
4-Chloro-2,5-dimethylaniline 98.0+%, TCI America™
CAS: 20782-94-9 Molecular Formula: C8H10ClN Molecular Weight (g/mol): 155.625 MDL Number: MFCD08445705 InChI Key: POEANWWEPFQEEF-UHFFFAOYSA-N Synonym: 4-chloro-2,5-xylidine,4-chloro-2,5-dimethylphenylamine,4-chloro-2,5-dimethyl-phenylamine,acmc-20amm1,4-chloranyl-2,5-dimethyl-aniline,benzenamine,4-chloro-2,5-dimethyl,4-chloro-2,5-dimethyl-anilin PubChem CID: 12338307 IUPAC Name: 4-chloro-2,5-dimethylaniline SMILES: CC1=CC(=C(C=C1Cl)C)N
2,3,5,6-Tetrafluoro-p-xylene 98.0+%, TCI America™
CAS: 703-87-7 Molecular Formula: C8H6F4 Molecular Weight (g/mol): 178.13 MDL Number: MFCD00012231 InChI Key: IWKPBYPUIPVYNZ-UHFFFAOYSA-N Synonym: 2,3,5,6-Tetrafluoro-1,4-dimethylbenzene PubChem CID: 136549 IUPAC Name: 1,2,4,5-tetrafluoro-3,6-dimethylbenzene SMILES: CC1=C(C(=C(C(=C1F)F)C)F)F
4-Chloro-m-xylene 98.0+%, TCI America™
CAS: 95-66-9 Molecular Formula: C8H9Cl Molecular Weight (g/mol): 140.61 MDL Number: MFCD00060644 InChI Key: UIEVCEQLNUHDIF-UHFFFAOYSA-N Synonym: 4-chloro-m-xylene,m-xylene, 4-chloro,2,4-dimethylchlorobenzene,benzene, 1-chloro-2,4-dimethyl,mxylene4chloro,1-chloro-2,4-dimethyl-benzene,4-chlor-m-xylol,pubchem3639,acmc-209rzq,4-chloro-meta-xylene PubChem CID: 523153 IUPAC Name: 1-chloro-2,4-dimethylbenzene SMILES: CC1=CC(=C(C=C1)Cl)C
2,5-Dimethylbenzoic Acid 98.0+%, TCI America™
CAS: 610-72-0 Molecular Formula: C9H10O2 Molecular Weight (g/mol): 150.177 MDL Number: MFCD00002482 InChI Key: XZRHNAFEYMSXRG-UHFFFAOYSA-N Synonym: benzoic acid, 2,5-dimethyl,isoxylic acid,2,5-dimethyl benzoic acid,unii-rke5pmk0h6,2,5-dimethyl-benzoic acid,2-carboxy-1,4-dimethylbenzene,rke5pmk0h6,p-xylene-2-carboxylic acid,2,5-dimethylbenzenecarboxylic acid,2,5-dimethylbenzoicacid PubChem CID: 11892 ChEBI: CHEBI:64825 IUPAC Name: 2,5-dimethylbenzoic acid SMILES: CC1=CC(=C(C=C1)C)C(=O)O
2,4-Dimethylaniline 98.0+%, TCI America™
CAS: 95-68-1 Molecular Formula: C8H11N Molecular Weight (g/mol): 121.183 MDL Number: MFCD00007738 InChI Key: CZZZABOKJQXEBO-UHFFFAOYSA-N Synonym: 2,4-xylidine,2,4-dimethyl aniline,m-xylidine,m-4-xylidine,2,4-dimethylphenylamine,benzenamine, 2,4-dimethyl,2-methyl-p-toluidine,4-methyl-o-toluidine,1-amino-2,4-dimethylbenzene,4-amino-1,3-xylene PubChem CID: 7250 ChEBI: CHEBI:27840 IUPAC Name: 2,4-dimethylaniline SMILES: CC1=CC(=C(C=C1)N)C
4-Chloro-o-xylene 98.0+%, TCI America™
CAS: 615-60-1 Molecular Formula: C8H9Cl Molecular Weight (g/mol): 140.61 MDL Number: MFCD00000596 InChI Key: HNQLMBJUMVLFCF-UHFFFAOYSA-N Synonym: 4-chloro-o-xylene,3,4-dimethylchlorobenzene,1-chloro-3,4-dimethylbenzene,benzene, 4-chloro-1,2-dimethyl,o-xylene, 4-chloro,4-chloro-ortho-xylene,4-chloro-1,2-xylene,unii-qo24waw04q,qo24waw04q,pubchem3641 PubChem CID: 32886 IUPAC Name: 4-chloro-1,2-dimethylbenzene SMILES: CC1=C(C=C(C=C1)Cl)C
3-Chloro-o-xylene 96.0+%, TCI America™
CAS: 608-23-1 Molecular Formula: C8H9Cl Molecular Weight (g/mol): 140.61 MDL Number: MFCD00060689 InChI Key: NVLHGZIXTRYOKT-UHFFFAOYSA-N Synonym: 3-chloro-o-xylene,2,3-dimethylchlorobenzene,benzene, chlorodimethyl,3-chloro-1,2-dimethylbenzene,3-chloro-ortho-xylene,benzene, 1-chloro-2,3-dimethyl,xylyl chloride,chloro o-xylene,mono-chlorxylol,chloro-ortho-xylene PubChem CID: 32884 IUPAC Name: 1-chloro-2,3-dimethylbenzene SMILES: CC1=C(C(=CC=C1)Cl)C
2,6-Dimethylbenzoic Acid 98.0+%, TCI America™
CAS: 632-46-2 Molecular Formula: C9H10O2 Molecular Weight (g/mol): 150.177 MDL Number: MFCD00002483 InChI Key: HCBHQDKBSKYGCK-UHFFFAOYSA-N Synonym: benzoic acid, 2,6-dimethyl,2,6-dimethylbenzoicacid,2,6-dimethyl-benzoic acid,vic-m-xylylic acid,2,6-dimethyl benzoic acid,m-xylene-2-carboxylic acid,2,6-dimethylbenzene carboxylic acid,benzoic acid, 2,6-dimethyl-7ci,8ci,9ci,zlchem 286,vic.-m-xylylic acid PubChem CID: 12439 ChEBI: CHEBI:64827 IUPAC Name: 2,6-dimethylbenzoic acid SMILES: CC1=C(C(=CC=C1)C)C(=O)O
1,2-Bis(3,4-dimethylphenyl)ethane 95.0+%, TCI America™
CAS: 34101-86-5 Molecular Formula: C18H22 Molecular Weight (g/mol): 238.37 MDL Number: MFCD00037055 InChI Key: MOPBWASVAUDDTC-UHFFFAOYSA-N Synonym: 1,2-Di(3,4-xylyl)ethane PubChem CID: 36676 IUPAC Name: 4-[2-(3,4-dimethylphenyl)ethyl]-1,2-dimethylbenzene SMILES: CC1=CC=C(CCC2=CC=C(C)C(C)=C2)C=C1C
2,6-Dimethylphenylboronic Acid (contains varying amounts of Anhydride) 98.0+%, TCI America™
CAS: 100379-00-8 Molecular Formula: C8H11BO2 Molecular Weight (g/mol): 149.98 MDL Number: MFCD01009693 InChI Key: ZXDTWWZIHJEZOG-UHFFFAOYSA-N Synonym: 2,6-dimethylphenyl boronic acid,2,6-dimethylbenzeneboronic acid,2,6-dimethylphenyl boranediol,2,6-dimethylboronic acid,m-xylene-2-boronic acid,2,6-dimethyl-phenylboronic acid,boronic acid, 2,6-dimethylphenyl,2-borono-m-xylene,pubchem16357,acmc-1c3za PubChem CID: 583322 IUPAC Name: (2,6-dimethylphenyl)boronic acid SMILES: CC1=CC=CC(C)=C1B(O)O