Chlorotriethylsilane CAS 994-30-9

1. Chlorotriethylsilane CAS 994-30-9 is primarily used as a silylating agent and protecting group reagent for alcohols, amines, thiols, and carboxylic acids in organic synthesis . Its stability and reactivity are intermediate between trimethylsilyl (TMS) and tert-butyldimethylsilyl (TBS) ethers, making it valuable for selective protection strategies .
2. Chlorotriethylsilane acts as a silane coupling agent to enhance adhesion between organic polymers and inorganic substrates in composite materials, and is used for surface modification of glass and metals to improve hydrophobicity and corrosion resistance .
3. Applications of Chlorotriethylsilane also include its use in the production of silicone oils, resins, rubbers, protective coatings, adhesives, and sealants, as well as in the synthesis of pharmaceutical intermediates .

1. Store Chlorotriethylsilane CAS 994-30-9 in a tightly sealed container under inert gas (e.g., nitrogen or argon) in a cool, dry, well-ventilated place, protected from moisture as Chlorotriethylsilane decomposes in contact with water . Recommended storage is at room temperature in a cool, dark area .
2. Keep Chlorotriethylsilane strictly away from strong oxidizing agents, strong bases, and water . Use in areas with explosion-proof equipment as it is a flammable liquid with a flash point of 30°C (86°F) .
3. Always use appropriate personal protective equipment (PPE) including chemical-resistant gloves, tightly fitting safety goggles or face shield, and protective clothing . Handle only with adequate ventilation or in a chemical fume hood, and avoid breathing vapors, mist, or gas .

1. Immediately isolate the spill area, eliminate all ignition sources, and ensure adequate ventilation. Do NOT let Chlorotriethylsilane CAS 994-30-9 enter drains or waterways . Use personal protective equipment including self-contained breathing apparatus (SCBA) .
2. Contain Chlorotriethylsilane using dry, inert, non-combustible absorbent material (e.g., dry sand) . Carefully collect the contaminated material using non-sparking tools into a sealed, labeled corrosion-resistant chemical waste container for proper disposal according to hazardous material regulations .
3. Chlorotriethylsilane reacts with water, releasing toxic and corrosive hydrogen chloride gas, and is classified as a dangerous when wet material . Under fire conditions, use dry chemical, carbon dioxide, or alcohol-resistant foam; water may be ineffective . It is classified for transport as UN2986.

1. Chlorotriethylsilane CAS 994-30-9 is classified with GHS signal word "Danger". It is a flammable liquid and vapor (H226), causes severe skin burns and serious eye damage (H314/H318), is toxic if swallowed (H301), and may be corrosive to metals (H290) . It reacts violently with water, releasing toxic and corrosive gases .
2. Chlorotriethylsilane has a boiling point of 142-149°C, density of 0.898 g/cm³, and vapor pressure of 6.77 mmHg . Thermal decomposition produces toxic and irritating fumes including carbon monoxide, carbon dioxide, hydrogen chloride, and silicon oxides . It is harmful to aquatic life with long-lasting effects .
3. Always Chlorotriethylsilane CAS 994-30-9 consult the specific Safety Data Sheet (SDS) for Chlorotriethylsilane for complete hazard information, first-aid procedures, and handling instructions. Precautionary statements include P210 (keep away from heat/sparks/open flames), P233 (keep container tightly closed), P240 (ground/bond container), P280 (wear protective gloves/eye protection), and P403+P235 (store in well-ventilated place, keep cool) .