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| Silbond 40-HF |
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| SILBOND 40-HF is a concentrated form to obtain usable silica. It has a flash point above 100'F (37.8'C) and is a classified as a combustible liquid. It is a partially hydrolyzed mixture of monomers, dimers, trimers, high polymers and cyclic polysilicates. Average -Si-O-Si- chain length is about five. It is commonly used as an intermediate towards less concentrated, more highly hydrolyzed binders for a variety of end uses. Like Silbond?Condensed, these binders are used for inorganic zinc rich coatings, investment casting molds, cores and ceramic shapes and coatings. Other Silbond Corporation bulletins describing basic chemistry and specific applications of ethyl silicate are available. |
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Color : 30 APHA max.
Specific Gravity : 1.055 - 1.07 at 20'C (68'F)
Acidity : 0.001% max. (as HCl)
Silica Content : 40.0% by wt. min. as SiO2
Low Boilers : 0.8% by wt. max.
Iron : 3 ppm max.
Flash Point : >100'F TCC
Form : Water-white liquid
Molecular Weight : 744 average
Density : 8.83 lbs./gal. (68'F) (20'C)
Boiling Point : Initial 172'F (78'C) at 1 atm.
Freezing Point : -130'F (-90'C)
Flash Point : Typical 125+'F by Tag Closed Cup
Viscosity : 5.75 cps. average at 25'C |
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