CAS 108-67-8: Mesitylene (C9H12)
Identity
| CAS Number | 108-67-8 |
| Molecular Formula | C9H12 |
| IUPAC Name | 1,3,5-trimethylbenzene |
| Molecular Weight | 120.19 g/mol |
| SMILES | Cc1cc(C)cc(C)c1 |
| Synonyms | 1,3,5-trimethylbenzene, mesitylene, sym-trimethylbenzene, TMB |
2D Structure
Physical Properties
| Density | 0.865 g/mL at 25°C |
| Boiling Point | 164.7°C |
| Melting Point | -44.7°C |
| Flash Point | 44.0°C |
| Vapor Pressure | 0.3 kPa at 20°C |
| Refractive Index | nD = 1.499 |
| Dielectric Constant | ε = 2.27 |
Safety & GHS Classification
FlammableIrritant
- H226: Flammable liquid and vapor
- H315: Causes skin irritation
- H319: Causes serious eye irritation
- H332: Harmful if inhaled
- H335: May cause respiratory irritation
Storage: Store in well-ventilated area away from heat and ignition sources. Keep container tightly sealed. Avoid prolonged skin contact.
Material Compatibility Matrix
Plastics
| Material | Rating |
|---|---|
| PTFE | Excellent |
| PVC | Poor |
| PE | Good |
| PP | Good |
| PEEK | Excellent |
| PVDF | Good |
Rubbers
| Material | Rating |
|---|---|
| Viton | Severe Effect |
| NBR | Severe Effect |
| EPDM | Severe Effect |
| Silicone | Poor |
| FKM | Severe Effect |
Metals
| Material | Rating |
|---|---|
| Stainless 316 | Excellent |
| Aluminum | Excellent |
| Copper | Excellent |
| Brass | Excellent |
Applications
- Laboratory solvent for organic synthesis
- Chemical intermediate for trimellitic acid
- Pharmaceutical intermediate
- Paint and coating solvent
- Rubber and polymer solvent
- Fuel additive research
External References: PubChem