... colorless liquid ,food and beverage, sour agents, yeast nutrients, and for production of food grade phosphate ... , and melting point is 42.3 degrees Celsius. 2.It is high boiling acid, non volatile and difficult ... Used as clarifier in food and beverage, sour agents, yeast nutrients, and for production of food grade phosphatepacking: Packed ... H 3 PO 3 ) % ≤0.0120 orthophosphoric acid(H3PO4 )7664-38-2