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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.

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1 – 9 of 9 results
1

2,4-Dimethylphenyl isocyanate, 98+%

CAS: 51163-29-2 Molecular Formula: C9H9NO Molecular Weight (g/mol): 147.177 MDL Number: MFCD00013853 InChI Key: QUOBVYPFBJUOAJ-UHFFFAOYSA-N Synonym: 2,4-dimethylphenyl isocyanate,2,4-dimethylphenylisocyanate,benzene, 1-isocyanato-2,4-dimethyl,2,4-dimethylbenzenisocyanate,acmc-20aoc8,1-isocyanato-2,4-dimethyl-benzene PubChem CID: 5207585 IUPAC Name: 1-isocyanato-2,4-dimethylbenzene SMILES: CC1=CC(=C(C=C1)N=C=O)C

PubChem CID 5207585
CAS 51163-29-2
Molecular Weight (g/mol) 147.177
MDL Number MFCD00013853
SMILES CC1=CC(=C(C=C1)N=C=O)C
Synonym 2,4-dimethylphenyl isocyanate,2,4-dimethylphenylisocyanate,benzene, 1-isocyanato-2,4-dimethyl,2,4-dimethylbenzenisocyanate,acmc-20aoc8,1-isocyanato-2,4-dimethyl-benzene
IUPAC Name 1-isocyanato-2,4-dimethylbenzene
InChI Key QUOBVYPFBJUOAJ-UHFFFAOYSA-N
Molecular Formula C9H9NO
2

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

PubChem CID 98605
CAS 40397-98-6
Molecular Weight (g/mol) 147.18
ChEBI CHEBI:60097
MDL Number MFCD00013854
SMILES CC1=CC=C(C)C(=C1)N=C=O
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
IUPAC Name 2-isocyanato-1,4-dimethylbenzene
InChI Key SOXVXJQIQVOCAY-UHFFFAOYSA-N
Molecular Formula C9H9NO
3

3,5-Dimethylphenyl isocyanate, 97%

CAS: 54132-75-1 Molecular Formula: C9H9NO Molecular Weight (g/mol): 147.177 MDL Number: MFCD00013868 InChI Key: DZSGDHNHQAJZCO-UHFFFAOYSA-N Synonym: 3,5-dimethylphenyl isocyanate,3,5-dimethylphenylisocyanate,3,5-xylyl isocyanate,benzene, 1-isocyanato-3,5-dimethyl,isocyanic acid 3,5-dimethylphenyl ester,5-isocyanato-m-xylene,1-isocyanato-3,5-dimethyl-benzene,acmc-1axct,3,5-dimethylbenzenisocyanate,ksc274i2t PubChem CID: 521488 IUPAC Name: 1-isocyanato-3,5-dimethylbenzene SMILES: CC1=CC(=CC(=C1)N=C=O)C

PubChem CID 521488
CAS 54132-75-1
Molecular Weight (g/mol) 147.177
MDL Number MFCD00013868
SMILES CC1=CC(=CC(=C1)N=C=O)C
Synonym 3,5-dimethylphenyl isocyanate,3,5-dimethylphenylisocyanate,3,5-xylyl isocyanate,benzene, 1-isocyanato-3,5-dimethyl,isocyanic acid 3,5-dimethylphenyl ester,5-isocyanato-m-xylene,1-isocyanato-3,5-dimethyl-benzene,acmc-1axct,3,5-dimethylbenzenisocyanate,ksc274i2t
IUPAC Name 1-isocyanato-3,5-dimethylbenzene
InChI Key DZSGDHNHQAJZCO-UHFFFAOYSA-N
Molecular Formula C9H9NO
4

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

PubChem CID 137096
CAS 1591-99-7
Molecular Weight (g/mol) 147.177
ChEBI CHEBI:63899
MDL Number MFCD00013851
SMILES CC1=C(C(=CC=C1)N=C=O)C
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
IUPAC Name 1-isocyanato-2,3-dimethylbenzene
InChI Key KNHJIEOCVVIBIV-UHFFFAOYSA-N
Molecular Formula C9H9NO
5

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

PubChem CID 76635
CAS 3171-45-7
Molecular Weight (g/mol) 136.20
MDL Number MFCD00007729
SMILES CC1=CC(N)=C(N)C=C1C
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
IUPAC Name 4,5-dimethylbenzene-1,2-diamine
InChI Key XSZYBMMYQCYIPC-UHFFFAOYSA-N
Molecular Formula C8H12N2
6

2,6-Dimethylphenyl isocyanate, 98%

CAS: 28556-81-2 Molecular Formula: C9H9NO Molecular Weight (g/mol): 147.18 MDL Number: MFCD00002012 InChI Key: YQLRKXVEALTVCZ-UHFFFAOYSA-N Synonym: 2,6-dimethylphenyl isocyanate,benzene, 2-isocyanato-1,3-dimethyl,2,6-dimethylphenylisocyanate,2,6-xylyl isocyanate,unii-2ql5mu0e0c,2ql5mu0e0c,isocyanic acid 2,6-dimethylphenyl ester,2,6-dimethylbenzenisocyanate,2,6-dimethyl phenyl isocyanate,2-isocyanato-1,3-dimethyl-benzene PubChem CID: 98787 IUPAC Name: 2-isocyanato-1,3-dimethylbenzene SMILES: CC1=CC=CC(C)=C1N=C=O

PubChem CID 98787
CAS 28556-81-2
Molecular Weight (g/mol) 147.18
MDL Number MFCD00002012
SMILES CC1=CC=CC(C)=C1N=C=O
Synonym 2,6-dimethylphenyl isocyanate,benzene, 2-isocyanato-1,3-dimethyl,2,6-dimethylphenylisocyanate,2,6-xylyl isocyanate,unii-2ql5mu0e0c,2ql5mu0e0c,isocyanic acid 2,6-dimethylphenyl ester,2,6-dimethylbenzenisocyanate,2,6-dimethyl phenyl isocyanate,2-isocyanato-1,3-dimethyl-benzene
IUPAC Name 2-isocyanato-1,3-dimethylbenzene
InChI Key YQLRKXVEALTVCZ-UHFFFAOYSA-N
Molecular Formula C9H9NO
7

4-Bromo-2,6-dimethylphenyl isocyanate, 98%, Thermo Scientific™

CAS: 77159-76-3 Molecular Formula: C9H8BrNO Molecular Weight (g/mol): 226.07 MDL Number: MFCD00037040 InChI Key: XGBDVSJAHTYSBK-UHFFFAOYSA-N Synonym: 4-bromo-2,6-dimethylphenyl isocyanate,4-bromo-2,6-dimethylphenylisocyanate,4-bromo-2,6-dimethylbenzenisocyanate,benzene,5-bromo-2-isocyanato-1,3-dimethyl,5-bromanyl-2-isocyanato-1,3-dimethyl-benzene,benzene, 5-bromo-2-isocyanato-1,3-dimethyl-9ci PubChem CID: 4430747 IUPAC Name: 5-bromo-2-isocyanato-1,3-dimethylbenzene SMILES: CC1=CC(Br)=CC(C)=C1N=C=O

PubChem CID 4430747
CAS 77159-76-3
Molecular Weight (g/mol) 226.07
MDL Number MFCD00037040
SMILES CC1=CC(Br)=CC(C)=C1N=C=O
Synonym 4-bromo-2,6-dimethylphenyl isocyanate,4-bromo-2,6-dimethylphenylisocyanate,4-bromo-2,6-dimethylbenzenisocyanate,benzene,5-bromo-2-isocyanato-1,3-dimethyl,5-bromanyl-2-isocyanato-1,3-dimethyl-benzene,benzene, 5-bromo-2-isocyanato-1,3-dimethyl-9ci
IUPAC Name 5-bromo-2-isocyanato-1,3-dimethylbenzene
InChI Key XGBDVSJAHTYSBK-UHFFFAOYSA-N
Molecular Formula C9H8BrNO
8

3,4-Dimethylphenyl isocyanate, 97%

CAS: 51163-27-0 Molecular Formula: C9H9NO Molecular Weight (g/mol): 147.18 MDL Number: MFCD00013867 InChI Key: AYCDBMRVKSXYKW-UHFFFAOYSA-N Synonym: 3,4-dimethylphenyl isocyanate,3,4-dimethylphenylisocyanate,benzene, 4-isocyanato-1,2-dimethyl,3,4-dimethyl phenylisocyanate,3,4-dimethylbenzenisocyanate,acmc-1aump,ksc265g2l,3,4-dimethyl phenyl isocyanate,1-isocyanato-3,4-dimethyl-benzene,4-isocyanato-1,2-dimethyl benzene PubChem CID: 4389663 ChEBI: CHEBI:60098 IUPAC Name: 4-isocyanato-1,2-dimethylbenzene SMILES: CC1=C(C)C=C(C=C1)N=C=O

PubChem CID 4389663
CAS 51163-27-0
Molecular Weight (g/mol) 147.18
ChEBI CHEBI:60098
MDL Number MFCD00013867
SMILES CC1=C(C)C=C(C=C1)N=C=O
Synonym 3,4-dimethylphenyl isocyanate,3,4-dimethylphenylisocyanate,benzene, 4-isocyanato-1,2-dimethyl,3,4-dimethyl phenylisocyanate,3,4-dimethylbenzenisocyanate,acmc-1aump,ksc265g2l,3,4-dimethyl phenyl isocyanate,1-isocyanato-3,4-dimethyl-benzene,4-isocyanato-1,2-dimethyl benzene
IUPAC Name 4-isocyanato-1,2-dimethylbenzene
InChI Key AYCDBMRVKSXYKW-UHFFFAOYSA-N
Molecular Formula C9H9NO
9

o-Xylene, Spectrophotometric Grade, 96% min

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

PubChem CID 7237
CAS 95-47-6
Molecular Weight (g/mol) 106.17
ChEBI CHEBI:28063
MDL Number MFCD00008519
SMILES CC1=CC=CC=C1C
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
IUPAC Name 1,2-xylene
InChI Key CTQNGGLPUBDAKN-UHFFFAOYSA-N
Molecular Formula C8H10