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.
o-Xylene (Certified), Fisher Chemical
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
Xylenes (Histological), Fisher Chemical™
CAS: 1330-20-7 Molecular Formula: C8H10 MDL Number: MFCD00077264 Synonym: Xylol,Dimethylbenzene
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
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
3,4-Dimethylbenzeneboronic acid, 98+%
CAS: 55499-43-9 Molecular Formula: C8H11BO2 Molecular Weight (g/mol): 149.98 MDL Number: MFCD01009694 InChI Key: KDVZJKOYSOFXRV-UHFFFAOYSA-N Synonym: 3,4-dimethylphenyl boronic acid,3,4-dimethylbenzeneboronic acid,3,4-dimethylphenyl boranediol,3,4-dimethylphenylboronicacid,4-borono-o-xylene,boronic acid, 3,4-dimethylphenyl,pubchem1832,acmc-209lna,3.4-dimethylbenzeneboronic acid,3,4-dimethyl phenylboronic acid PubChem CID: 2734348 IUPAC Name: (3,4-dimethylphenyl)boronic acid SMILES: CC1=CC=C(C=C1C)B(O)O
4,5-Dimethyl-o-phenylenediamine, 98%, many contain up to ca 15% water
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
2-Iodo-4,6-dimethylaniline, 98%, Thermo Scientific Chemicals
CAS: 4102-54-9 Molecular Formula: C8H10IN Molecular Weight (g/mol): 247.079 MDL Number: MFCD07779005 InChI Key: ODPOIEACUVQCBZ-UHFFFAOYSA-N Synonym: 2,4-dimethyl-6-iodoaniline,2-iodo-4,6-di-methylaniline,benzenamine,2-iodo-4,6-dimethyl PubChem CID: 14040290 IUPAC Name: 2-iodo-4,6-dimethylaniline SMILES: CC1=CC(=C(C(=C1)I)N)C
Xylenes, 98%, pure, mixture of isomers
CAS: 1330-20-7 Molecular Formula: C8H10 MDL Number: MFCD00077264 Synonym: Dimethylbenzene
3,5-Dimethylaniline, 97+%
CAS: 108-69-0 Molecular Formula: C8H11N Molecular Weight (g/mol): 121.183 MDL Number: MFCD00007813 InChI Key: MKARNSWMMBGSHX-UHFFFAOYSA-N Synonym: 3,5-xylidine,benzenamine, 3,5-dimethyl,3,5-xylylamine,3,5-dimethylphenylamine,3,5-xylidene,5-amino-1,3-xylene,1-amino-3,5-dimethylbenzene,3,5-dimethylbenzenamine,3,5-dimethylbenzeneamine,5-amino-1,3-dimethylbenzene PubChem CID: 7949 IUPAC Name: 3,5-dimethylaniline SMILES: CC1=CC(=CC(=C1)N)C
2,3-Dimethylaniline, 98%
CAS: 87-59-2 Molecular Formula: C8H11N Molecular Weight (g/mol): 121.183 MDL Number: MFCD00007732 InChI Key: VVAKEQGKZNKUSU-UHFFFAOYSA-N Synonym: 2,3-xylidine,3-amino-o-xylene,benzenamine, 2,3-dimethyl,2,3-dimethylbenzenamine,2,3-dimethylphenylamine,2,3-xylylamine,ortho-xylidine,vic-o-xylidine,unii-zd450abi9x,ccris 4739 PubChem CID: 6893 IUPAC Name: 2,3-dimethylaniline SMILES: CC1=C(C(=CC=C1)N)C
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
2,4-Dimethylbenzeneboronic acid, 97%
CAS: 55499-44-0 Molecular Formula: C8H11BO2 Molecular Weight (g/mol): 149.984 MDL Number: MFCD02683101 InChI Key: TYONHSPZXLFWKI-UHFFFAOYSA-N Synonym: 2,4-dimethylphenyl boronic acid,2,4-dimethylbenzeneboronic acid,2,4-dimethyl phenyl boronic acid,2,4-dimethylphenylboronicacid,4-dimethylphenylboronic acid,boronic acid, 2,4-dimethylphenyl,4-borono-m-xylene,pubchem9565,m-xylene-4-boronic acid,acmc-1ay9d PubChem CID: 4198739 IUPAC Name: (2,4-dimethylphenyl)boronic acid SMILES: B(C1=C(C=C(C=C1)C)C)(O)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
Methyl 3,5-dimethylbenzoate, 98%
CAS: 25081-39-4 Molecular Formula: C10H12O2 Molecular Weight (g/mol): 164.204 MDL Number: MFCD00077971 InChI Key: PEVXENGLERTHJE-UHFFFAOYSA-N PubChem CID: 32786 IUPAC Name: methyl 3,5-dimethylbenzoate SMILES: CC1=CC(=CC(=C1)C(=O)OC)C