Hexamethyldisiloxane CAS 107-46-0

1. Hexamethyldisiloxane is widely used as a precursor in plasma-enhanced chemical vapor deposition (PECVD) to create thin, hydrophobic SiO₂-like films for corrosion-resistant and water-repellent coatings on glass, metals, and textiles .
2. Hexamethyldisiloxane CAS 107-46-0 serves as a surface treatment agent in the semiconductor industry to improve photoresist adhesion on silicon wafers, and as a silylating and methylating reagent in organic synthesis .
3. Applications of Hexamethyldisiloxane also include its use as a low-surface-energy additive in personal care products (to impart a silky, non-greasy feel), as a high-performance lubricant, and in the production of silicone sealants and adhesives .

1. Store Hexamethyldisiloxane in a tightly sealed container in a cool, dry, well-ventilated place away from heat, sparks, and open flames; recommended storage is at room temperature (RT) .
2. Keep Hexamethyldisiloxane strictly away from strong oxidizing agents, and protect containers from physical damage to prevent leakage; ensure the storage area is equipped with proper fire-fighting equipment .
3. Always Hexamethyldisiloxane CAS 107-46-0 use appropriate personal protective equipment (PPE) including chemical-resistant gloves (rubber), safety goggles, and protective clothing when handling Hexamethyldisiloxane, and ensure adequate ventilation or local exhaust to avoid inhaling vapors .

1. Immediately isolate the spill area, eliminate all ignition sources, and provide adequate ventilation; contain Hexamethyldisiloxane using dry sand, earth, or other inert, non-combustible absorbent material and prevent entry into drains or waterways .
2. Carefully collect Hexamethyldisiloxane CAS 107-46-0 using non-sparking tools into a sealed, labeled chemical waste container for proper disposal according to local, state, and federal environmental regulations .
3. Personnel must wear full chemical-protective equipment including self-contained breathing apparatus (SCBA) if necessary during cleanup; Hexamethyldisiloxane is classified for transport (UN1993, Hazard Class 3, PG II) and is water-reactive in large quantities, producing flammable vapors .

1. Hexamethyldisiloxane is classified as a highly flammable liquid and vapor (H225, Danger) with a flash point ranging from -30°C to -1°C; its vapors are heavier than air and may travel to distant ignition sources, causing flashback .
2. Hexamethyldisiloxane is harmful if swallowed, inhaled, or absorbed through the skin, and may cause skin, eye, and respiratory tract irritation (H315, H319, H335); Hexamethyldisiloxane CAS 107-46-0 is toxic to aquatic life with long-lasting effects (H411) .
3. Hexamethyldisiloxane has a low acute toxicity profile (rat oral LDLo 3mL/kg), but thermal decomposition produces toxic and irritating fumes including carbon monoxide, carbon dioxide, and silicon oxides; always consult the specific Safety Data Sheet (SDS) for complete hazard information, first-aid procedures (P303+P361+P353 for skin, P305+P351+P338 for eyes), and handling instructions .