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-Iodo-m-xylene 98.0+%, TCI America™
CAS: 4214-28-2 Molecular Formula: C8H9I Molecular Weight (g/mol): 232.06 MDL Number: MFCD00013706 InChI Key: BUNKQJAMHYKQIM-UHFFFAOYSA-N Synonym: 4-iodo-m-xylene,2,4-dimethyliodobenzene,1,3-dimethyl-4-iodobenzene,m-xylene, 4-iodo,benzene, 1-iodo-2,4-dimethyl,2,4-dimethyl-1-iodobenzene,2-iodo-1,5-dimethylbenzene,4-jod-m-xylol,pubchem3869,acmc-209jnr PubChem CID: 77885 IUPAC Name: 1-iodo-2,4-dimethylbenzene SMILES: CC1=CC=C(I)C(C)=C1
4,5-Dimethyl-1,2-phenylenediamine 98.0+%, TCI America™
CAS: 3171-45-7 Molecular Formula: C8H12N2 Molecular Weight (g/mol): 136.20 MDL Number: MFCD00007729 InChI Key: XSZYBMMYQCYIPC-UHFFFAOYSA-N Synonym: 4,5-dimethyl-1,2-phenylenediamine,4,5-diamino-o-xylene,4,5-dimethyl-o-phenylenediamine,1,2-benzenediamine, 4,5-dimethyl,1,2-diamino-4,5-dimethylbenzene,4,5-dimethyl-1,2-benzenediamine,4,5-dimethyl-benzene-1,2-diamine,4,5-dimethyl-ortho-phenylenediamine,4,5-dimethylphenylene-1,2-diamine,4,5-dimethyl-o-phenylenediamine monohydrate PubChem CID: 76635 IUPAC Name: 4,5-dimethylbenzene-1,2-diamine SMILES: CC1=CC(N)=C(N)C=C1C
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
1,5-Diiodo-2,4-dimethylbenzene 97.0+%, TCI America™
CAS: 4102-50-5 Molecular Formula: C8H8I2 Molecular Weight (g/mol): 357.96 MDL Number: MFCD29089354 InChI Key: ZOOZGIAPEXFLEF-UHFFFAOYSA-N Synonym: 4,6-Diiodo-m-xylene PubChem CID: 12575960 IUPAC Name: 1,5-diiodo-2,4-dimethylbenzene SMILES: CC1=CC(C)=C(I)C=C1I
2,5-Dibromo-p-xylene 98.0+%, TCI America™
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
1,2-Dibromo-4,5-dimethylbenzene 98.0+%, TCI America™
CAS: 24932-48-7 Molecular Formula: C8H8Br2 Molecular Weight (g/mol): 263.96 MDL Number: MFCD00082743 InChI Key: BCIDDURGCAHERU-UHFFFAOYSA-N PubChem CID: 34347 IUPAC Name: 1,2-dibromo-4,5-dimethylbenzene SMILES: CC1=CC(Br)=C(Br)C=C1C
3,5-Dimethylbenzoic Acid 99.0+%, TCI America™
CAS: 499-06-9 Molecular Formula: C9H10O2 Molecular Weight (g/mol): 150.177 MDL Number: MFCD00002525 InChI Key: UMVOQQDNEYOJOK-UHFFFAOYSA-N Synonym: mesitylenic acid,benzoic acid, 3,5-dimethyl,unii-ed8av34n0y,3,5-dimethyl benzoic acid,3,5-dimethyl-benzoic acid,ed8av34n0y,3,5-dimethylbenzoicacid,pubchem15440,3,5-dimethylbezoic acid,3,5 dimethylbenzoic acid PubChem CID: 10356 ChEBI: CHEBI:64821 IUPAC Name: 3,5-dimethylbenzoic acid SMILES: CC1=CC(=CC(=C1)C(=O)O)C
Amitraz 97.0+%, TCI America™
CAS: 33089-61-1 Molecular Formula: C19H23N3 Molecular Weight (g/mol): 293.414 MDL Number: MFCD00069396 InChI Key: QXAITBQSYVNQDR-UHFFFAOYSA-N Synonym: amitraz,mitac,taktic,triazid,azaform,mitaban,acarac,baam,azadieno,ectodex PubChem CID: 36324 ChEBI: CHEBI:2665 IUPAC Name: N'-(2,4-dimethylphenyl)-N-[(2,4-dimethylphenyl)iminomethyl]-N-methylmethanimidamide SMILES: CC1=CC(=C(C=C1)N=CN(C)C=NC2=C(C=C(C=C2)C)C)C
3,4-Dimethylaniline 99.0+%, TCI America™
CAS: 95-64-7 Molecular Formula: C8H11N Molecular Weight (g/mol): 121.18 MDL Number: MFCD00007810 InChI Key: DOLQYFPDPKPQSS-UHFFFAOYSA-N Synonym: 3,4-xylidine,4-amino-o-xylene,3,4-xylylamine,3,4-dimethylphenylamine,benzenamine, 3,4-dimethyl,3,4-dimethylbenzenamine,3,4-dimethylaminobenzene,1-amino-3,4-dimethylbenzene,4-amino-1,2-dimethylbenzene,aniline, 3,4-dimethyl PubChem CID: 7248 ChEBI: CHEBI:39901 IUPAC Name: 3,4-dimethylaniline SMILES: CC1=CC=C(N)C=C1C
3-Ethyl-o-xylene 99.0+%, TCI America™
CAS: 933-98-2 Molecular Formula: C10H14 Molecular Weight (g/mol): 134.222 MDL Number: MFCD00059232 InChI Key: QUBBAXISAHIDNM-UHFFFAOYSA-N Synonym: 3-ethyl-o-xylene,1,2-dimethyl-3-ethylbenzene,ethylxylene,benzene, 1-ethyl-2,3-dimethyl,benzene, ethyldimethyl,o-xylene, 3-ethyl,ethyldimethylbenzene,acmc-209rli,2,3-dimethylethylbenzene,3-ethyl-1,2-dimethylbenzene PubChem CID: 13621 IUPAC Name: 1-ethyl-2,3-dimethylbenzene SMILES: CCC1=CC=CC(=C1C)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
3,3',5,5'-Tetramethylbiphenyl 98.0+%, TCI America™
CAS: 25570-02-9 Molecular Formula: C16H18 Molecular Weight (g/mol): 210.32 MDL Number: MFCD00051910 InChI Key: CMZYGFLOKOQMKF-UHFFFAOYSA-N PubChem CID: 520212 IUPAC Name: 3,3',5,5'-tetramethyl-1,1'-biphenyl SMILES: CC1=CC(=CC(C)=C1)C1=CC(C)=CC(C)=C1
1-(3,4-Dimethylphenyl)-3-methyl-5-pyrazolone 97.0+%, TCI America™
CAS: 277299-70-4 Molecular Formula: C12H14N2O Molecular Weight (g/mol): 202.257 MDL Number: MFCD09795980 InChI Key: HBWBJCSXUJIDGN-UHFFFAOYSA-N PubChem CID: 11735829 IUPAC Name: 2-(3,4-dimethylphenyl)-5-methyl-1H-pyrazol-3-one SMILES: CC1=C(C=C(C=C1)N2C(=O)C=C(N2)C)C
