Mesitylene CAS 108-67-8

1. Mesitylene CAS 108-67-8 is primarily used as a precursor in the production of dyes, plastics, and fine chemicals, notably for synthesizing 2,4,6-trimethylaniline and antioxidants .
2. Mesitylene serves as a specialty solvent, a ligand in organometallic chemistry, and an internal standard in NMR spectroscopy due to its single proton peak .
3. Applications of Mesitylene also include its use as a component in aviation gasoline blends, a developer for photopatternable silicones in electronics, and in the production of trimesic acid and polyester resin stabilizers .

1. Store Mesitylene CAS 108-67-8 in a tightly sealed container in a cool, dry, well-ventilated area, away from heat, sparks, and open flames due to its flammability . Recommended storage is at ambient temperatures in a fire-resistant area .
2. Keep Mesitylene strictly away from strong oxidizing agents to prevent violent reactions and fire hazards .
3. Always use Mesitylene  appropriate personal protective equipment (PPE) including chemical-resistant gloves, safety goggles, and protective clothing; use only with adequate ventilation (fume hood) and prevent the accumulation of electrostatic charges by grounding containers .

1. Immediately isolate the spill area, eliminate all ignition sources, and contain Mesitylene CAS 108-67-8 using inert, non-combustible absorbent material (e.g., dry sand); do NOT let it enter drains or waterways as it is toxic to aquatic life .
2. Carefully collect Mesitylene using non-sparking tools and place it into sealed, labeled chemical waste containers for proper disposal according to local, state, and federal environmental regulations .
3. Personnel must wear suitable PPE including self-contained breathing apparatus (SCBA) if necessary during cleanup; for fire, use alcohol-resistant foam, dry chemical, or carbon dioxide extinguishing media, as water spray may be ineffective .

1. Mesitylene CAS 108-67-8 is classified as a flammable liquid and vapor (H226, GHS02) with a flash point of 44-50°C (111-122°F) and may be fatal if swallowed and enters airways (H304) . Mesitylene is harmful if inhaled, with NIOSH REL TWA 25 ppm (125 mg/m³) .
2. Mesitylene causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335); it is toxic to aquatic life with long-lasting effects (H411) . Inhalation of high concentrations can cause central nervous system depression (headache, drowsiness, dizziness, nausea, incoordination) and chemical pneumonitis if liquid is aspirated into the lungs .
3. Always consult Mesitylene the specific Safety Data Sheet (SDS) for Mesitylene for complete hazard information, first-aid procedures , and handling instructions; UN classification is UN2325, Hazard Class 3, PG III .