Hexamethyldisilane CAS 1450-14-2

1. Hexamethyldisilane is widely used as a versatile silylating reagent in organic synthesis to introduce trimethylsilyl groups into molecules such as alcohols, amines, and acids, often with high chemoselectivity . Hexamethyldisilane CAS 1450-14-2 is employed in the synthesis of pharmaceuticals (e.g., beta-lactam antibiotics), agrochemicals, dyes, perfumes, and in the protection of reactive sites in carbohydrates and nucleosides .
2. The compound serves as a crucial precursor for silicon-based thin films and silicon carbide (SiC) deposition in semiconductor manufacturing and materials science . Hexamethyldisilane CAS 1450-14-2 is also used in the development of hydrophobic surface coatings, adhesive formulations, and in nanotechnology research for fabricating nanostructured materials .
3. Applications of Hexamethyldisilane include its role in specialized chemical reactions, such as copper-catalyzed cyanation of arenes and stereospecific deoxygenation reactions . It also functions as a solubilizer in polar/nonpolar solvents and as a coupling or release agent .

1. Store Hexamethyldisilane in a tightly sealed container under an inert gas (e.g., nitrogen or argon) in a cool, dry, well-ventilated place, away from heat, sparks, and open flames. Recommended storage temperatures are room temperature (in a cool, dark place ideally below 15°C) or long-term storage in a cool, dry area . Hexamethyldisilane CAS 1450-14-2 is moisture sensitive and must be protected from air, light, and humidity .
2. Keep Hexamethyldisilane strictly away from strong oxidizing agents, strong acids, and strong bases due to its incompatibility and the risk of hazardous reactions or decomposition . Ground and bond container and receiving equipment to prevent static discharge .
3. Always use appropriate personal protective equipment (PPE) including chemical-resistant gloves, tightly fitting safety goggles, face protection, and protective clothing. Use only with explosion-proof equipment and adequate ventilation (e.g., chemical fume hood) to avoid breathing vapors, mist, or gas .

1. Immediately isolate the spill area (at least 50 meters in all directions), eliminate all ignition sources (no smoking, flames, or sparks), and provide adequate ventilation. Contain Hexamethyldisilane using dry, inert, non-combustible absorbent material (e.g., dry sand) and absolutely avoid contact with water. Prevent material from entering drains, sewers, or waterways .
2. Carefully collect Hexamethyldisilane CAS 1450-14-2 using non-sparking tools (or an explosion-proof vacuum) into a sealed, labeled, corrosion-resistant chemical waste container for proper disposal according to local, state, and federal environmental regulations. For large spills, dike for later disposal and cover with foam to reduce vapors .
3. Personnel must wear full chemical-protective equipment including positive pressure self-contained breathing apparatus (SCBA) and chemical-resistant clothing during cleanup. Hexamethyldisilane is classified for transport (UN1993, Hazard Class 3, Packing Group II) .

1. Hexamethyldisilane is classified as a highly flammable liquid and vapor (H225, Danger) with a flash point ranging from -9°C to -1.67°C . It causes serious eye irritation (H319), may cause an allergic skin reaction (H317), and may cause respiratory irritation (H335) . Vapor/air mixtures are explosive .
2. Hexamethyldisilane has very low acute oral toxicity (rat LD50 >20 g/kg) . It is moisture sensitive and decomposes on contact with air, light, or heat, releasing toxic and irritating fumes including oxides of carbon and silicon . It may cause long-lasting harmful effects to aquatic life (H413) .
3. Always consult Hexamethyldisilane CAS 1450-14-2 the specific Safety Data Sheet (SDS) for Hexamethyldisilane for complete hazard information, first-aid procedures (P305+P351+P338 for eyes, P303+P361+P353 for skin, P304+P340 for inhalation), and mandatory handling protocols. Precautionary statements include P210 (keep away from heat/sparks/open flames), P233 (keep container tightly closed), P240 (ground/bond container), and P280 (wear protective gloves/eye protection) .