CAS 108-38-3 M-xylene, also known as 1,3-xylene; m-dimethylbenzene, is an organic compound with the chemical formula C8H10. It is a colourless, transparent liquid with a toluene-like odour. It is insoluble in water but miscible with most organic solvents, such as ethanol, ether and chloroform.
There are three isomers of xylene: o-xylene, m-xylene and p-xylene. The industrial product is a mixture of these three isomers in the following proportions: o-xylene (10%), m-xylene (70%) and p-xylene (20%).


m-Xylene Application
1. meta-xylene is used in pharmaceutical, fragrance, and dye intermediate materials and color film oil-soluble color formers. Also used as a raw material for the production of isophthalic acid. However, compared with the ortho- and para-isomers, the amount is less, so it is often converted to other isomers by isomerization.
2. For the production of isophthalic acid, m-methyl benzoic acid, isophthalonitrile, and the like.
Hazards Classification
- GHS Classification: Flammable Liquid (GHS02), Health Hazard (GHS08), Environmental Hazard (GHS09)
- Hazard Statements: Highly flammable liquid and vapor; harmful if inhaled; may cause drowsiness or dizziness; causes skin irritation; toxic to aquatic life with long lasting effects.
- UN Number: UN 1307
- Hazard Class: 3 (Flammable Liquids)
- Packing Group: III
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