has acquired all of the outstanding stock of US-based hydrofluosilicic acid
supplier Key Chemical, Inc., the company said on Friday.
When it is artificially added to water supplies by local water treatment plants, it is usually in the forms of hydrofluosilicic acid
, sodium silicofluoride or sodium fluoride, which are commonly sourced from phosphate fertiliser manufacturers or aluminium smelters.
It is hoped that more professionals will take the time to sign the petition at www.fluoridealert.org so that we can pressure our legislators to support a government study on the effects of ingesting hydrofluosilicic acid
, the most commonly used fluoridation chemical.
In the United States, several agents are used for fluoridation, including silicofluoride compounds (sodium silicofluoride and hydrofluosilicic acid
) and sodium fluoride.
Besides, the substances that are used to fluoridate do not occur naturally, such as hydrofluosilicic acid
In addition, the water is treated with chlorine gas to reduce bacteria and with hydrofluosilicic acid
to fluorinate the water.
EPA has stated (27) that it regards the use of waste hydrofluosilicic acid
, recovered from phosphate fertilizer manufacturing, in fluoridation systems as "an ideal environmental solution to a long-standing problem," because "water and air pollution are minimized, and water utilities have a low-cost source of fluoride available to them."
Noting that "the substances most widely used for water fluoridation programs are hydrofluosilicic acid
and silicofluorides," Bock's bill would require that any fluoridation compounds added to public water supplies first must, (1) be approved by the US Food and Drug Administration and, (2) be tested to assure that "any complex combination of elements is broken down into harmless components when introduced into actual conditions found in end-result tap water." AB 1729 also would mandate that "no substance classified as a pesticide or hazardous waste shall be added to the public drinking water system."
The plant, out of convenience, added hydrofluosilicic acid
(HFS) as a fluoridation chemical at the same point as the coagulant and polyelectrolytes.
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.