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Meta‑Xylene

CAS Number:108‑38‑3

Synonyms:Meta‑xylene; m‑dimethylbenzene; C₆H₄(CH₃)₂

Chemical Formula:C₈H₁₀

Molecular Weight:106.17 g/mol

Product Introduction

Meta-xylene is a colorless, aromatic hydrocarbon with a sweet odor. Notably used as a solvent and precursor for isophthalic acid production (for PET), as well as in agrochemical and specialty chemical syntheses.

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Physical & Chemical Properties

Property	Value
Appearance	Colorless to pale-yellow liquid
Odor	Sweet, aromatic
Density @ 20 °C	~0.864–0.868 g/cm³
Melting Point	–48 to –54 °C
Boiling Point	~138–139 °C
Flash Point	~27–31 °C
Vapor Pressure @ 20 °C	~7–9 mm Hg
Refractive Index	~1.497
Solubility in Water	~160 mg/L
Vapor Density	~3.7 × air
Explosion Limits	1.1–7.0 %

Applications

Chemical intermediate: Isophthalic acid, xylidines, specialty chemicals
Solvent: Paints, varnish, lab uses, metal cleaning

Safety

Flammable liquid (flash point ~28 °C). Toxic via inhalation, can cause CNS depression and respiratory irritation. OSHA/ACGIH TLV 100 ppm; IDLH 900 ppm Use in ventilated areas with PPE.