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-Bromo-p-xylene, 98+%
CAS: 553-94-6 Molecular Formula: C8H9Br Molecular Weight (g/mol): 185.06 MDL Number: MFCD00000074 InChI Key: QXISTPDUYKNPLU-UHFFFAOYSA-N Synonym: 2,5-dimethylbromobenzene,2-bromo-p-xylene,1-bromo-2,5-dimethylbenzene,benzene, 2-bromo-1,4-dimethyl,bromo-p-xylene,2-bromo-1,4-dimethyl-benzene,2,5-xylyl bromide,2-bromo-1,4-xylene,2,5-dimethylphenyl bromide,p-xylene, 2-bromo PubChem CID: 11121 IUPAC Name: 2-bromo-1,4-dimethylbenzene SMILES: CC1=CC=C(C)C(Br)=C1
2,5-Dimethylbenzeneboronic acid, 98%
CAS: 85199-06-0 Molecular Formula: C8H11BO2 Molecular Weight (g/mol): 149.98 MDL Number: MFCD01863525 InChI Key: OOMZKLJLVGQZGV-UHFFFAOYSA-N Synonym: 2,5-dimethylphenyl boronic acid,2,5-dimethylbenzeneboronic acid,2,5-dimethylphenylboronicacid,2,5-dimethylphenyl boranediol,p-xylene-2-boronic acid,boronic acid, 2,5-dimethylphenyl,pubchem1831,p-xyleneboronic acid,ksc448a1r,2,5-dimehylphenylboronic acid PubChem CID: 2734347 IUPAC Name: (2,5-dimethylphenyl)boronic acid SMILES: CC1=CC=C(C)C(=C1)B(O)O
2,5-Dichloro-p-xylene, 98%
CAS: 1124-05-6 Molecular Formula: C8H8Cl2 Molecular Weight (g/mol): 175.052 MDL Number: MFCD00000610 InChI Key: UTGSRNVBAFCOEU-UHFFFAOYSA-N Synonym: 2,5-dichloro-p-xylene,2,5-dichloro-1,4-dimethylbenzene,benzene, 1,4-dichloro-2,5-dimethyl,p-xylene, 2,5-dichloro,unii-7p8m86zob2,2,5-dichloro-para-xylene,p-xylene,5-dichloro,p-xylene,2,5-dichloro,acmc-2099eq,dsstox_cid_24780 PubChem CID: 70755 IUPAC Name: 1,4-dichloro-2,5-dimethylbenzene SMILES: CC1=CC(=C(C=C1Cl)C)Cl
o-Xylene, ≥99.0% (GC), Solstice
CAS: 95-47-6 Molecular Formula: C8H10 Molecular Weight (g/mol): 106.17 MDL Number: MFCD00008519 InChI Key: CTQNGGLPUBDAKN-UHFFFAOYSA-N Synonym: o-xylene,1,2-dimethylbenzene,ortho-xylene,o-xylol,o-methyltoluene,o-dimethylbenzene,2-xylene,3,4-xylene,benzene, 1,2-dimethyl,o-xylenes PubChem CID: 7237 ChEBI: CHEBI:28063 IUPAC Name: 1,2-xylene SMILES: CC1=CC=CC=C1C
5-Bromo-m-xylene, 98%
CAS: 556-96-7 Molecular Formula: C8H9Br Molecular Weight (g/mol): 185.064 MDL Number: MFCD00000087 InChI Key: LMFRTSBQRLSJHC-UHFFFAOYSA-N Synonym: 5-bromo-m-xylene,3,5-dimethylbromobenzene,benzene, 1-bromo-3,5-dimethyl,m-xylene, 5-bromo,5-bromo-1,3-xylene,5-bromo-1,3-dimethylbenzene,1-bromo-3,5-dimethyl-benzene,5-bromo-meta-xylene,5-bromo-3,5-dimethylbenzene,1-bromo-3,5-dimethyl benzene PubChem CID: 136357 IUPAC Name: 1-bromo-3,5-dimethylbenzene SMILES: CC1=CC(=CC(=C1)Br)C
2,5-Dimethylbenzoic acid, 98%
CAS: 610-72-0 Molecular Formula: C9H10O2 Molecular Weight (g/mol): 150.18 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
3-Fluoro-o-xylene, 99%
CAS: 443-82-3 Molecular Formula: C8H9F Molecular Weight (g/mol): 124.16 MDL Number: MFCD00000323 InChI Key: AWLDSXJCQWTJPC-UHFFFAOYSA-N Synonym: 3-fluoro-o-xylene,2,3-dimethylfluorobenzene,3-fluoro-1,2-xylene,o-xylene, 3-fluoro,3-fluoro-1,2-dimethylbenzene,benzene, 1-fluoro-2,3-dimethyl,1,2-dimethyl-3-fluorobenzene,1-fluoro-2,3-dimethyl-benzene,fluorxylol,pubchem4408 PubChem CID: 96489 IUPAC Name: 1-fluoro-2,3-dimethylbenzene SMILES: CC1=CC=CC(F)=C1C
3,5-Dimethylbenzoic acid, 98+%
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
2-Fluoro-m-xylene, 98%
CAS: 443-88-9 Molecular Formula: C8H9F Molecular Weight (g/mol): 124.158 MDL Number: MFCD00039215 InChI Key: JTAUTNBVFDTYTI-UHFFFAOYSA-N Synonym: 2,6-dimethylfluorobenzene,2-fluoro-m-xylene,1-fluoro-2,6-dimethylbenzene,1,3-dimethyl-2-fluorobenzene,benzene, 2-fluoro-1,3-dimethyl,2,6-dimethyl fluorobenzene,2-fluoro-1,3-dimethyl-benzene,fr b1 f1,pubchem4407,2-fluoro-3-methyltoluene PubChem CID: 123065 IUPAC Name: 2-fluoro-1,3-dimethylbenzene SMILES: CC1=C(C(=CC=C1)C)F
2,3-Dimethylphenyl isocyanate, 99%
CAS: 1591-99-7 Molecular Formula: C9H9NO Molecular Weight (g/mol): 147.177 MDL Number: MFCD00013851 InChI Key: KNHJIEOCVVIBIV-UHFFFAOYSA-N Synonym: 2,3-dimethylphenyl isocyanate,2,3-dimethylphenylisocyanate,benzene, isocyanatodimethyl,2,3-dimethylbenzenisocyanate,dimethylphenyl isocyanate,acmc-1bttc,1-isocyanato-2,3-dimethyl-benzene,#,benzene,1-isocyanato-2,3-dimethyl PubChem CID: 137096 ChEBI: CHEBI:63899 IUPAC Name: 1-isocyanato-2,3-dimethylbenzene SMILES: CC1=C(C(=CC=C1)N=C=O)C
2,5-Dimethylphenyl isocyanate, 97%
CAS: 40397-98-6 Molecular Formula: C9H9NO Molecular Weight (g/mol): 147.18 MDL Number: MFCD00013854 InChI Key: SOXVXJQIQVOCAY-UHFFFAOYSA-N Synonym: 2,5-dimethylphenyl isocyanate,2,5-dimethylphenylisocyanate,benzene, 2-isocyanato-1,4-dimethyl,2,5-dimethyl phenylisocyanate,2,5-dimethylbenzenisocyanate,acmc-1art9,1-isocyanato-2,5-dimethyl-benzene PubChem CID: 98605 ChEBI: CHEBI:60097 IUPAC Name: 2-isocyanato-1,4-dimethylbenzene SMILES: CC1=CC=C(C)C(=C1)N=C=O
3,4-Dimethyl-o-phenylenediamine, 98%
CAS: 41927-01-9 Molecular Formula: C8H12N2 Molecular Weight (g/mol): 136.198 MDL Number: MFCD00051709 InChI Key: MHQULXYNBKWNDF-UHFFFAOYSA-N Synonym: 3,4-dimethyl-o-phenylenediamine,2-amino-3,4-dimethylphenylamine,2-amino-3,4-dimethylphenyl amine,3,4-dimethyl-benzene-1,2-diamine,1,2-benzenediamine, 3,4-dimethyl,3,4-diamino-o-xylene,o-xylene-3,4-diamine,5,6-dimethyl phenylenediamine,1,2-diamino-3,4-dimethylbenzene,3,4-dimethyl-1,2-benzenediamine PubChem CID: 521077 IUPAC Name: 3,4-dimethylbenzene-1,2-diamine SMILES: CC1=C(C(=C(C=C1)N)N)C
4-Nitro-o-xylene, 99%
CAS: 99-51-4 Molecular Formula: C8H9NO2 Molecular Weight (g/mol): 151.17 MDL Number: MFCD00007268 InChI Key: HFZKOYWDLDYELC-UHFFFAOYSA-N Synonym: 4-nitro-o-xylene,p-nitro-o-xylene,o-xylene, 4-nitro,benzene, 1,2-dimethyl-4-nitro,para-nitro-ortho-xylene,3,4-dimethyl-1-nitrobenzene,4-nitro-1,2-dimethylbenzene,1,2-dimethyl-4-nitrobenzol,3,4-dimethylnitrobenzene,ccris 3118 PubChem CID: 7440 IUPAC Name: 1,2-dimethyl-4-nitrobenzene SMILES: CC1=CC=C(C=C1C)[N+]([O-])=O
4-Chloro-2,5-dimethylbenzenesulfonyl chloride, 98%
CAS: 88-49-3 Molecular Formula: C8H8Cl2O2S Molecular Weight (g/mol): 239.11 MDL Number: MFCD00044017 InChI Key: JBYZPUBAISWVDI-UHFFFAOYSA-N Synonym: 5-chloro-p-xylene-2-sulphonyl chloride,4-chloro-2,5-dimethylbenzene-1-sulfonyl chloride,4-chloro-2, 5-dimethylphenylsulfonyl chloride,2,5-dimethyl-4-chlorobenzenesulfonyl chloride,chloro 4-chloro-2,5-dimethylphenyl sulfone,pubchem5091,4-chloro-2,5-dimethylbenzenesulfonylchloride,4-chloro 2,5-dimethylphenylsulfonylchloride,4-chloro-2,5-dimethylphenylsulfonyl chloride,4-chloro-2,5-dimethyl-benzenesulfonyl chloride PubChem CID: 66618 IUPAC Name: 4-chloro-2,5-dimethylbenzenesulfonyl chloride SMILES: CC1=CC(=C(C)C=C1Cl)S(Cl)(=O)=O
4-Bromo-2,6-dimethylaniline, 98%, Thermo Scientific Chemicals
CAS: 24596-19-8 Molecular Formula: C8H10BrN Molecular Weight (g/mol): 200.08 MDL Number: MFCD00007826 InChI Key: QGLAYJCJLHNIGJ-UHFFFAOYSA-N Synonym: 4-bromo-2,6-xylidine,benzenamine, 4-bromo-2,6-dimethyl,4-bromo-2,6-dimethyl-phenylamine,2-amino-5-bromo-m-xylene,2,6-dimethyl-4-bromoaniline,4-bromo-2,6-dimethylbenzenamine,4-bromo-2,6-dimethylphenylamine,4-bromo-2,6-dimethyl-aniline,4-bromo-2,6-dimethylaniline,4-bromo-2,6-dimethyl-benzenamine PubChem CID: 90549 IUPAC Name: 4-bromo-2,6-dimethylaniline SMILES: CC1=CC(Br)=CC(C)=C1N