... gravity is 1.09, and melting point is 60 . Monosodium phosphate is soluble in water, and its aqueous solution is acidic ... air. Uses: Used as water treatment chemicals of boiler, acidity buffer, detergent, and auxiliary agent in mica plate building, dyeing, leather ... and electroplating etc. It is mainly used as quality improver, buffer, emulsifier, and nourish-supplement agent etc. in food industry. It ...