CAS 108-38-3 m-Xylene (meta-xylene) is an aromatic hydrocarbon.
m-Xylene is generally considered a nonpolar solvent. It is nonpolar enough that it is immiscible with water and excellent at dissolving other nonpolar substances like oils, fats, and many resins.
m-Xylene (meta-xylene) has very low water miscibility and high BP. However, it has lower MP than the o and p isomers of xylene so has wider scope for recrystallizations as it won't solidify in the freezer. Pentane may be added as anti-solvent, then removed at will by evaporation. m-Xylene is curiously more viscous at RT than related hydrocarbons like benzene, toluene & n-alkanes. Meta-xylene is the more stable xylene; heating p-xylene with HCl & AlCl3 causes irreversible alkyl migration to give the m-xylene isomer.
m-Xylene Quick Details
Other Name: 1,3-xylene; m-Xylol; Metaxylene; m-dimethylbenzene
CAS No.: 108-38-3
Molecular Formula: C8H10
Molecular weight: 106.17
Appearance: Colorless or light yellow liquid
Assay: ≥99.5%

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