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A compound of silicon and fluorine with another element.
Farlex Partner Medical Dictionary © Farlex 2012
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In 1975, a first national law was enacted under the leadership of the Department of Oral Health of the Health Promotion and Protection Division, providing the basic standards as the addition of sodium silicofluoride in all water treatment plants of the country to implement this public policy of prevention in partnership with the National Public Water Fluoridated Program (226).
Paradoxically, ending the use of silicofluoride compounds to treat the public water supplies of over 160 million Americans--while hardly a panacea--would appear to contribute to lower rates of disese by reducing blood lead levels.
In the United States, several agents are used for fluoridation, including silicofluoride compounds (sodium silicofluoride and hydrofluosilicic acid) and sodium fluoride.
No studies of the long-term effects of silicofluorides on humans have been undertaken.
The silicofluoride can be dissolved in large solution tanks and fed through solution feeders, or it can be fed as a slurry.
Most fluxes contain fluoride salts, such as cryolite (|Na.sub.3~|AlF.sub.6~), calcium fluoride (Ca|F.sub.2~), and sodium silicofluoride (|Na.sub.2~|SiF.sub.6~), in amounts up to 20%.
Research published in the December 2000 issue of the journal Neurotoxicology warns that public drinking water treated with sodium silicofluoride or fluosilicic acid, known as silicofluorides (SiFs), is linked to higher uptake of lead in children.
The chemicals--fluorosilicic acid, sodium silicofluoride, and sodium fluoride--used to fluoridate drinking water are industrial waste products from the phosphate fertilizer (and aluminum) industry." Please also remember that some 99% of water used in households to 'medicate' drinking water is not used for drinking.
Some have hypothesized that community water containing sodium silicofluoride and hydrofluosilicic acid may increase blood lead (PbB) concentrations in children by leaching of lead from water conduits and by increasing absorption of lead from water.
Sodium fluoride and sodium silicofluoride are furnished by American Int'l.
In fluoridated areas, drinking water obtained from surface water with an average fluoride concentration of 0.1-0.2 ppm[16] is raised to the "optimal" level of 0.7-1.2 ppm by the addition of sodium fluoride, hydrofluosilicic acid, or sodium silicofluoride. [Note: In 1985, the EPA raised the Maximum Contaminant Level to 4 ppm.]