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| Silbond H-4 |
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| Prehydrolyzed ethyl polysilicate |
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| The SILBOND H-4 is a prehydrolyzed ethyl polysilicate designed specifically as a ready-to-use binder for investment casting molds. When diluted 1:1 by volume with alcohol, a slurry for ceramic shells can be made with addition of refractories. H-4 can be used right out of the drum for solid flasks, without prior in-house hydrolysis or dilution. It is a natural for any application requiring a prehydrolyzed binder with a silica content of 18%. Bulletins describing specific applications, with formulations, are available from Silbond Corporation. |
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Color : 100 APHA max.
Specific Gravity : 0.900 - 0.920 at 20'C (68'F)
Acidity : 0.010 - 0.020% max. (as HCl)
Silica Content : 17.5 - 19.0% wt. as SiO2
Gel time in seconds @ 25'C : 70 - 130
Form : Clear Liquid
Density : 7.60 lbs./gal. at 68'F (20'C)
Boiling Point : Initial 172'F (78'C) at 1 atm.
Freezing Point : <-70'F (-57'C)
Flash Point : 56'F (13.3'C) by Tag Closed Cup
Viscosity : 5.0 cps. at 20'C |
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