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.
Lidocaine, 97.5%
CAS: 137-58-6 Molecular Formula: C14H22N2O Molecular Weight (g/mol): 234.343 MDL Number: MFCD00026733 InChI Key: NNJVILVZKWQKPM-UHFFFAOYSA-N Synonym: lidocaine,lignocaine,xylocaine,lidoderm,2-diethylamino-n-2,6-dimethylphenyl acetamide,anestacon,esracaine,duncaine,cappicaine,gravocain PubChem CID: 3676 ChEBI: CHEBI:6456 IUPAC Name: 2-(diethylamino)-N-(2,6-dimethylphenyl)acetamide SMILES: CCN(CC)CC(=O)NC1=C(C=CC=C1C)C
2,6-Dimethylaniline, 99%
CAS: 87-62-7 Molecular Formula: C8H11N Molecular Weight (g/mol): 121.18 MDL Number: MFCD00007747 InChI Key: UFFBMTHBGFGIHF-UHFFFAOYSA-N Synonym: 2,6-xylidine,2-amino-m-xylene,o-xylidine,2,6-dimethylbenzenamine,2-amino-1,3-dimethylbenzene,2,6-dimethylphenylamine,benzenamine, 2,6-dimethyl,2,6-xylylamine,2-amino-1,3-xylene,1-amino-2,6-dimethylbenzene PubChem CID: 6896 ChEBI: CHEBI:28738 IUPAC Name: 2,6-dimethylaniline SMILES: CC1=CC=CC(C)=C1N
2,5-Dimethylphenol, 99+%
CAS: 95-87-4 Molecular Formula: C8H10O Molecular Weight (g/mol): 122.17 MDL Number: MFCD00002237 InChI Key: NKTOLZVEWDHZMU-UHFFFAOYSA-N Synonym: 2,5-xylenol,p-xylenol,phenol, 2,5-dimethyl,3,6-dimethylphenol,6-methyl-m-cresol,3,6-xylenol,2,5-dimethyl phenol,2,5-dmp,1,2,5-xylenol,1-hydroxy-2,5-dimethylbenzene PubChem CID: 7267 IUPAC Name: 2,5-dimethylphenol SMILES: CC1=CC=C(C)C(O)=C1
2,5-Dimethylaniline, 98+%
CAS: 95-78-3 Molecular Formula: C8H11N Molecular Weight (g/mol): 121.18 MDL Number: MFCD00007743 InChI Key: VOWZNBNDMFLQGM-UHFFFAOYSA-N Synonym: 2,5-xylidine,p-xylidine,2,5-dimethylphenylamine,2-amino-1,4-xylene,2,5-dimethylbenzenamine,benzenamine, 2,5-dimethyl,5-methyl-o-toluidine,6-methyl-m-toluidine,1-amino-2,5-dimethylbenzene,p-dimethylaniline PubChem CID: 7259 ChEBI: CHEBI:518305 IUPAC Name: 2,5-dimethylaniline SMILES: CC1=CC=C(C)C(N)=C1
2,4-Dimethylphenol, 99%
CAS: 105-67-9 Molecular Formula: C8H10O Molecular Weight (g/mol): 122.17 MDL Number: MFCD00002233 InChI Key: KUFFULVDNCHOFZ-UHFFFAOYSA-N Synonym: 2,4-xylenol,phenol, 2,4-dimethyl,gallex,4,6-dimethylphenol,1-hydroxy-2,4-dimethylbenzene,4-hydroxy-1,3-dimethylbenzene,rcra waste number u101,2,4-dimethyl phenol,caswell no. 907a,lysol brand disinfectant PubChem CID: 7771 ChEBI: CHEBI:34241 IUPAC Name: 2,4-dimethylphenol SMILES: CC1=CC(=C(C=C1)O)C
2,6-Dimethylaniline, 99%
CAS: 87-62-7 Molecular Formula: C8H11N Molecular Weight (g/mol): 121.18 MDL Number: MFCD00007747 InChI Key: UFFBMTHBGFGIHF-UHFFFAOYSA-N Synonym: 2,6-xylidine,2-amino-m-xylene,o-xylidine,2,6-dimethylbenzenamine,2-amino-1,3-dimethylbenzene,2,6-dimethylphenylamine,benzenamine, 2,6-dimethyl,2,6-xylylamine,2-amino-1,3-xylene,1-amino-2,6-dimethylbenzene PubChem CID: 6896 ChEBI: CHEBI:28738 IUPAC Name: 2,6-dimethylaniline SMILES: CC1=CC=CC(C)=C1N
2,4-Dimethylaniline, 99%
CAS: 95-68-1 Molecular Formula: C8H11N Molecular Weight (g/mol): 121.18 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
Mexiletine hydrochloride
CAS: 1-4-5370 Molecular Formula: C11H17NO·HCl Molecular Weight (g/mol): 215.72 InChI Key: NFEIBWMZVIVJLQ-UHFFFAOYNA-N Synonym: mexiletine hydrochloride,mexitil,mexiletine hcl,mexiletene hydrochloride,1-2,6-dimethylphenoxy-2-propanamine hydrochloride,1-2,6-dimethylphenoxy propan-2-amine hydrochloride,2-propanamine, 1-2,6-dimethylphenoxy-, hydrochloride,mexitil tn,1-2,6-xylyloxy-2-aminopropane hydrochloride PubChem CID: 21467 ChEBI: CHEBI:6917 IUPAC Name: 1-(2,6-dimethylphenoxy)propan-2-amine;hydrochloride SMILES: CC1=C(C(=CC=C1)C)OCC(C)N.Cl
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-Iodo-o-xylene, 97%
CAS: 31599-60-7 Molecular Formula: C8H9I Molecular Weight (g/mol): 232.064 MDL Number: MFCD00041437 InChI Key: DANMWBNOPFBJSZ-UHFFFAOYSA-N Synonym: 3-iodo-o-xylene,1,2-dimethyl-3-iodobenzene,2,3-dimethyliodobenzene,benzene, 1-iodo-2,3-dimethyl,benzene, iododimethyl,2,3-dimethyl-1-iodobenzene,jodxylol,3-iodo-ortho-xylene,pubchem3865,acmc-1ajf2 PubChem CID: 141645 IUPAC Name: 1-iodo-2,3-dimethylbenzene SMILES: CC1=C(C(=CC=C1)I)C
3-Bromo-o-xylene, 99%
CAS: 576-23-8 Molecular Formula: C8H9Br Molecular Weight (g/mol): 185.06 MDL Number: MFCD00000069 InChI Key: WLPXNBYWDDYJTN-UHFFFAOYSA-N Synonym: 3-bromo-o-xylene,3-bromo-1,2-dimethylbenzene,2,3-dimethylbromobenzene,2,3-dimethyl bromobenzene,benzene, bromodimethyl,1-bromo-2,3-dimethyl-benzene,benzene, 1-bromo-2,3-dimethyl,bromoxilene,xylylbromid,bromo-o-xylene PubChem CID: 68472 IUPAC Name: 1-bromo-2,3-dimethylbenzene SMILES: CC1=CC=CC(Br)=C1C
3-Nitro-o-xylene, 99%
CAS: 83-41-0 Molecular Formula: C8H9NO2 Molecular Weight (g/mol): 151.17 MDL Number: MFCD00007162 InChI Key: FVHAWXWFPBPFOS-UHFFFAOYSA-N Synonym: 3-nitro-o-xylene,2,3-dimethylnitrobenzene,nitroxylene,o-xylene, 3-nitro,benzene, 1,2-dimethyl-3-nitro,xylene, ar-nitro,benzene, dimethylnitro,unii-49gnx4cy5w,ccris 3117,49gnx4cy5w PubChem CID: 6739 IUPAC Name: 1,2-dimethyl-3-nitrobenzene SMILES: CC1=CC=CC(=C1C)[N+]([O-])=O
2,5-Dimethylbenzenesulfonyl chloride, 97%, Thermo Scientific™
CAS: 19040-62-1 Molecular Formula: C8H9ClO2S Molecular Weight (g/mol): 204.668 MDL Number: MFCD00024875 InChI Key: FZVZUIBYLZZOEW-UHFFFAOYSA-N Synonym: p-xylene-2-sulfonyl chloride,benzenesulfonyl chloride, 2,5-dimethyl,2,5-dimethylbenzene-1-sulfonyl chloride,2,5-dimethylphenylsulfonyl chloride,2,5-dimethyl-benzenesulfonyl chloride,benzenesulfonylchloride, 2,5-dimethyl,2,5-dimethylphenyl chlorosulfone,acmc-209etq,xylenesulfonylchloride,ksc178m0f PubChem CID: 87910 IUPAC Name: 2,5-dimethylbenzenesulfonyl chloride SMILES: CC1=CC(=C(C=C1)C)S(=O)(=O)Cl
2,5-dimethylphenyl isothiocyanate, Thermo Scientific™
CAS: 19241-15-7 Molecular Formula: C9H9NS Molecular Weight (g/mol): 163.238 InChI Key: RCBXZRJVMSWGAO-UHFFFAOYSA-N PubChem CID: 140499 IUPAC Name: 2-isothiocyanato-1,4-dimethylbenzene SMILES: CC1=CC(=C(C=C1)C)N=C=S