Silmaproovil

Silmaproovil is a synthetic organosilicon compound used in industrial coatings and lubricants. It features a siloxane backbone with propyl substituents, giving a balance of flexibility and hydrophobicity.

Production involves condensation reactions of propyl-terminated chlorosilanes with silica hydride functional siloxanes under basic or acid catalysis, followed by purification by vacuum distillation or heptane washing. Typical molecular weights range from 600 to 2000 g/mol.

Physical properties include a clear to pale viscous liquid or waxy solid at room temperature, high thermal stability up to 250–350 C, low surface energy, good dielectric properties, and chemical resistance.

Applications include use as high-temperature lubricants, anti-adhesion mold release agents, protective coatings, dielectric fluids in electronics, and as a lubricant additive in metal forming.

Handling and safety considerations indicate low acute toxicity and minimal skin irritation in some tests; users should employ gloves and eye protection, avoid inhalation of vapors, and note that flammability depends on grade. Products should be stored away from oxidizers.

Environmental and regulatory notes indicate not readily biodegradable and potential persistence in aquatic environments; containment and proper disposal are recommended, and it is regulated as a specialty chemical in some jurisdictions.

History and naming: First described in technical literature in the late 20th century; the name is derived from its silicon backbone and propyl substituents. Related compounds include silicones and siloxanes.