Hydrofluoric acid 70 Hydrofluoric acid is a solution of hydrogen fluoride in water. It is a colorless fuming liquid which can cause painful burns. Hf is one of the strongest inorganic acids, is used mainly for industrial purposes (eg, glass etching, metal cleaning, electronics manufacturing). Hydrofluoric acid also may be found in home rust removers. read more

In industry, hydrogen peroxide in higher concentrations is used as a bleach for textiles and paper, as a component of rocket fuels, and for producing foam rubber and organic chemicals.Hydrogen peroxide is also using to reduce BOD and COD in refinery for wastewater Treatment. Hydrogen peroxide is a colorless liquid at room temperature with a bitter taste. Small amounts of gaseous hydrogen peroxide occur naturally in the air. Hydrogen peroxide is unstable, decomposing readily to oxygen and water with release of heat. read more