Exposure may aggravate those with pre-existing eye, skin, or respiratory conditions. Dust may cause mechanical irritation to eyes, nose, throat, and lungs. Hazardous reaction in aqueous solution may occur with chlorine, hypochlorous acid, hypochlorites, cyanides or sulfides. Sulfamic acid forms strongly acidic solutions in water. Long-term exposure to concentrations above the workplace standards for inorganic fluoride compounds by inhalation may cause fluorosis.