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.
eMolecules 112773-90-7 | Ambeed | (R)-N-(26-Dimethylphenyl)-1-propylpiperidine-2-carboxamide hydrochloride | 250mg | 600827754 | A1143630 | MFCD22572716 | 310.87 | C17H27ClN2O
ChemScene | tert-Butyl 5-chloro-34-dihydro-26-naphthyridine-2(1H)-carboxylate | 100mg | 714103741 | CS-0119737 | 1196153-26-0 | MFCD11977790 | 268.740 | C13H17ClN2O2
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![eMolecules 267431-79-8 | N-[3-[(2,6-Dimethylphenyl)amino]-1-methyl-2-buten-1-ylidene]-2,6-dimethylbenzenamine | ChemScene306.453 | C21H26N2 | 95.000 | C\C(Nc1c(C)cccc1C)=C\C(\C)=N\c1c(C)cccc1C | 100mg | 602867631](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502483844.JPG-250.jpg)
eMolecules 267431-79-8 | N-[3-[(2,6-Dimethylphenyl)amino]-1-methyl-2-buten-1-ylidene]-2,6-dimethylbenzenamine | ChemScene306.453 | C21H26N2 | 95.000 | C\C(Nc1c(C)cccc1C)=C\C(\C)=N\c1c(C)cccc1C | 100mg | 602867631
N-[3-[(2,6-Dimethylphenyl)amino]-1-methyl-2-buten-1-ylidene]-2,6-dimethylbenzenamine | ChemScene | 267431-79-8306.453 | C21H26N2 | 95.000 | C\C(Nc1c(C)cccc1C)=C\C(\C)=N\c1c(C)cccc1C | 100mg | 602867631
Sigma Aldrich Fine Chemicals Biosciences Xylenes | 1330-20-7 | MFCD00077264 | 4l
Xylenes | Mol Wt: 106.17 | 1330-20-7 | MFCD00077264 | 4l
Medchemexpress LLC P-xylene bis(pyridinium bromide) | 14208-10-7 | MFCD00043749 | 99.6% | 422.16 g/mol | C18H18Br2N2 | 100 MG
p-Xylene bis(pyridinium bromide) is a cationic charged quencher supplied as a high-purity solid for research use. It acts as a weak bisquaternary inhibitor of acetylcholinesterase and butyrylcholinesterase and is used in fluorescence quenching, membrane fusion, and biochemical assay applications.
- High-purity solid suitable for research (99.6%).
- Cationic charged quencher used in fluorescence and FRET assays.
- Weak bisquaternary inhibitor of AChE and BChE (hAChE IC50 1540 μM; BChE IC50 529 μM).
- Molecular formula C18H18Br2N2; molecular weight 422.16 g/mol.
- Supplied in 100 mg packaging; store sealed away from moisture at 4°C (in solvent: -20°C for 1 month; -80°C for 6 months).
Sigma Aldrich Fine Chemicals Biosciences Xylenes histological grade | 1330-20-7 | MFCD00077264 | 4X4L
Xylenes histological grade | Purity: >=75.0% (xylenes isomers) | Mol Wt: 106.17 | 1330-20-7 | MFCD00077264 | 4X4L
eMolecules 67135-97-1 | (2,4-Dimethylphenyl)(phenyl)methanol | Oakwood Chemical | MFCD00962322 | 212.292 | C15H16O | 90.000 | Cc1ccc(C(O)c2ccccc2)c(C)c1 | 250mg | 537712623
(2,4-Dimethylphenyl)(phenyl)methanol | Oakwood Chemical | 67135-97-1 | MFCD00962322 | 212.292 | C15H16O | 90.000 | Cc1ccc(C(O)c2ccccc2)c(C)c1 | 250mg | 537712623
eMolecules 3921-12-8 | 2-Hydroxy-3,6-dimethylbenzoic acid | MFCD00156975 | 250mg
Pharmablock | tert-butyl 4-(2-hydroxyethyl)piperidine-1-carboxylate | 100mg | 551059937 | PB01045 | 89151-44-0 | MFCD03427086 | 229.320 | C12H23NO3
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GA International XyliFIL™ – Xylene & Chemical-Resistant Labels for Histology0.9″ x 0.75″ / 23mm x 19.1mm
XyliFIL™ labels are specially designed for histology (microscope slides) applications that require resistance to various chemicals and conditions associated with common histology preparation, such as xylene, ethanol series, xylene substitutes, histology stains, and high temperature (70°C) treatments.Its permanent adhesive ensures the labels remain affixed, even in the harshest environments. Their uniform material design avoids delamination issues and won’t absorb histology stains that can obscure printout and barcodes.Intended for use on flat surfaces, these solvent-resistant labels, along with their printout, can withstand immersion in xylene for up to 5 hours on a microscope slide (thorough testing in end-user application conditions is highly recommended). Resistant as well to long-term exposure and immersion in safer clearing and deparaffinizing xylene substitutes such as EZ Prep, Clearify™, Histo-Clear™, Formula 83™, Pro-Par, and others.
eMolecules 58138-74-2 | 2-Hydroxy-3,4-dimethylbenzoic acid | MFCD11203625 | 250mg
Ambeed | 2-Hydroxy-3,4-dimethylbenzoic acid | 250mg | 600843726 | A590335 | 58138-74-2 | MFCD11203625 | 166.176 | C9H10O3
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Sigma Aldrich Fine Chemicals Biosciences m-Xylene-d10 98 atom % D | 116601-58-2 | MFCD00209804 | 5G
m-Xylene-d10 98 atom % D | Purity: 99% (CP) | Mol Wt: 116.23 | 116601-58-2 | MFCD00209804 | 5G
Medchemexpress LLC Xylene Cyanol FF | 2650-17-1 | 94.69% | 5 G
Xylene Cyanol FF is an acid triphenylmethane dye used for histochemical staining of hemoglobin peroxidase or as a tracking dye for DNA sequencing in electrophoresis. It can also be catalyzed by Fe and Al to accelerate oxidation under the addition of double oxidant hydrogen peroxide and potassium periodate, enabling the spectrophotometric determination of Fe and Al in tested solutions. It is also used for denaturing and non-denaturing polyacrylamide gels in DNA tracking.
- Acid triphenylmethane dye
- Molecular weight: 538.61
- Formula: C₂₅H₂₇N₂NaO₆S₂
- Cas number: 2650-17-1
- Appearance: Solid
- Color: Dark green to black
- Purity: 94.69%
- Solubility: 10 mg/mL in H₂O (18.57 mM; ultrasonic and warming and heat to 60°C)