Chemicals and their harmful effects
Use : It is also used as a preservative in vaccinations. In medicine, formaldehyde solutions are applied topically to dry the skin, such as in the treatment of warts.
Health Risks: The acute effects are toxic in nature and may cause irritation to mucous membranes, difficulty breathing, lowered body temperature, lethargy, coma, and death. Some of the chronic effects include cancer of the nose and mucous membranes.
15. Hydrogen cyanide : Pure hydrogen cyanide is a colorless, very poisonous, and highly volatile liquid.
Use: Hydrogen cyanide is used in tempering steel, dyeing, explosives, engraving, the production of acrylic resin plastic, and other organic chemical products.
Health Risks : Inhalation is extremely dangerous and can include slow breathing rate, and irritation.
16. Lead : Lead is a very soft, highly malleable, bluish-white metal that has poor electrical conductivity.
Use: Lead is used in building construction and in the manufacture of lead-acid batteries, bullets and shot, and is part of solder, pewter, and fusible alloys.
Health Risks : Lead can damage nervous connections and cause blood and brain disorders. Long term exposure to lead or its salts can lead to nephropathy.