Silicon esters

The physical properties of commercial alkoxysilanes are provided in Table 1. Two classes of silane esters have very distinct properties and are generally considered apart from alkoxysilanes. Sdatranes are compounds derived from trialkanolamines and have siHcon—nitrogen coordination. These are generally hydrolytically stable and have unique physiological properties (3). A second special class of monomeric esters are cycHc diesters of polyethyleneoxide glycols designated sila-crowns, which have appHcation as catalysts (4). Neither silatranes nor sila-crowns are considered herein. 

Compound CAS Registry Number Formula Boiling point, °C 

Kirk-Othmer Encyclopedia of Chemical Technology (4th Edition) 

Nominal values commercial values may vary. Properties given are for the average compound containing 40 wt % siUcon dioxide.  

Melting poiat. Density, g/cm Refractive iadex. AH, Viscosity, Flash-poiat, LD q (oral, rat). 

Aryloxy- and acyloxysilanes are often solids. The aryloxysilanes have excellent thermal stabihty. Acyloxy and mixed acjioxyalkoxysilanes have poor thermal stabihty. Thermal decomposition has been noted at temperatures as low as 110°C and is generally observed by 170°C. 

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WATER - WATERPROOFING AND WATER/OIL REPELLENCY] (Vol 25) -ethoxysilanes for [SILICON COMPOUNDS - SILICON ESTERS] (Vol 22)... 

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