silicofluoride การใช้

• Chemical reaction in manufacturing sodium fluoride ( NaF ) from Sodium fluorosilicate / Sodium silicofluoride ( Na 2 SiF 6 )  Preceding contribs)
• Iridite 14-2, a chromate conversion coating for aluminum, contains chromium ( IV ) oxide, barium nitrate, sodium silicofluoride and ferricyanide.
• In the U . S ., about 40, 000 tons of fluorosilicic acid is recovered from phosphoric acid plants, and then used primarily in water fluoridation, sometimes after being processed into sodium silicofluoride.
• Like other common water additives such as chlorine, hydrofluosilicic acid and sodium silicofluoride decrease pH and cause a small increase of corrosivity, but this problem is easily addressed by increasing the pH . Trace levels of arsenic and lead may be present in fluoride compounds added to water; however, concentrations are below measurement limits.
• Like other common water additives such as chlorine, hydrofluosilicic acid and sodium silicofluoride decrease pH and cause a small increase of corrosivity, but this problem is easily addressed by increasing the pH . Trace levels of arsenic and lead may be present in fluoride compounds added to water, but no credible evidence exists that their presence is of concern : concentrations are below measurement limits.