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Nomination Summary for Fluorosilicates (N99030)

Nominated Substances: Hexafluorosilicic Acid, Sodium Hexafluorosilicate

Nomination Date: 04/26/1999

Nominator: Private Individual

Rationale: Primary agents used to fluoridate public drinking water systems; lack of toxicity information; assumed complete dissociation to free fluoride under normal conditions of use not supported by experimental evidence)

NTP Principles: not specified

Agents and Status

The following information relates to the specific agent and may include history from earlier or later nominations for this same agent.

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CASRN: 16961-83-4

Agent Name: Hexafluorosilicic Acid

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CASRN: 16893-85-9

Agent Name: Sodium Hexafluorosilicate