Xylene

Xylene (CAS 1330-20-7), also known as xylol, is an aromatic hydrocarbon solvent sourced as a mixed isomer blend.

Where is Xylene used?

• Coatings and paints: thins alkyd, epoxy, and polyurethane resins for application viscosity
• Rubber compounding: dissolves natural and synthetic rubber in adhesive and sealant manufacturing
• Printing inks: carrier solvent
• Automotive refinishing and industrial cleaning: cuts through grease, wax, and cured coatings
• It dissolves resins, oils, and polymers that resist less aggressive solvents.
• In organic chemistry, used as a starting material for the production of phthalic acids via catalytic oxidation.
• Used to clean steel, silicon wafers and integrated circuits.
• p-Xylene is a precursor to terephthalic acid and dimethyl terephthalate, which are used to make polyethylene terephthalate plastic bottles and polyester clothing.

Formulation notes

• Not corrosive to metals.
• Reacts violently with strong oxidizers such as nitric acid.

Typical specification

• Commercial xylene often contains a considerable amount (10 to 50%) of ethylbenzene.
• Xylene (mixed isomers) has index number 601-022-00-9.
• Xylene obtained by catalytic reforming is composed of 44% meta-xylene, 20% ortho-xylene, 20% para-xylene and 15% ethylbenzene.

Regulatory status

• Xylene (mixed isomers) is classified under CLP as a flammable liquid and vapour (H226).
• Xylene is not considered carcinogenic; IARC classifies it as Group 3.
• If xylene is placed on the market as a specific isomer or a mixture of isomers, the supplier must specify the commercialised form (Note C).
• The harmonised CLP classifications for xylene are mandatory and must be supplemented by the supplier's self-classification where applicable.

Storage, packaging and handling

• Xylene should be stored in a cool, well-ventilated area away from direct sunlight, heat, ignition sources, and incompatible materials.
• Bulk storage of xylene indoors should be avoided.

Technical content is compiled and updated by the SoleChem product team from public technical sources; the certificate of analysis (COA) governs product-specific specifications.