CHRONIC: Prolonged or repeated exposure may lead to irreversible damage to health. Prolonged exposure to fluoride dusts, vapours or mists results in perforation of the nasal septum. Chronic effects include excessive calcium precipitation by the fluoride ion in the bones, ligaments and tendons. Prolonged or repeated skin contact will lead to necrosis (death) of the skin.
Boric acid has been classified as a CATEGORY 3 TOXIC TO REPRODUCTION (WORKSAFE). Substances suspected of impairing fertility and or possibly causing birth defects. Are those substances which have possible developmental toxicity effects on humans but in respect of which the available information is not adequate for making a satisfactory assessment. There is some evidence from appropriate animal or epidemiological studies, but this is insufficient to place the substance in Category 2.