1,3,5-Trimethylbenzene (Mesitylene)
CAS Number: 108-67-8
1,3,5-Trimethylbenzene (mesitylene, ≥98.5%) is a heavy aromatic solvent with a high boiling point and excellent solvency for high-molecular-weight resins, epoxies, and polyimides. It is used in high-solids coatings, electronic chemical formulations, and as a chemical intermediate for trimesic acid and specialty surfactants.
Technical Specifications
| appearance | Colorless clear liquid |
| purity (%) | ≥98.5 |
| water content (%) | ≤0.05 |
| boiling point (°C) | 164.7 |
| density (g/mL, 20°C) | 0.863–0.867 |
Applications
- High-boiling solvent in high-solids industrial coatings and varnishes
- Solvent for polyimide and high-temperature resin formulations
- Electronic chemical carrier and developer solvent
- Intermediate for trimesic acid and isophthalic acid derivatives
- Component in slow-evaporation aromatic solvent blends
Key Features
- High boiling point enabling very slow evaporation for maximum flow in high-solids coatings
- Excellent solvency for demanding high-MW resins used in industrial protective coatings
- Symmetric trimethyl structure provides higher thermal stability than asymmetric isomers
- Available from dedicated heavy aromatics distillation with consistent isomer profile
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CAS Number
108-67-8
Category
Industrial Solvents / ChemicalsAvailability
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