It is colorless, transparent and syrupy liquid. The density is 1.70. packed by plastic drum Apperance: It is colorless, transparent and syrupy liquid. The density is 1.70. Description:It mixes with water in all proportions and then produce an amount of heat. It loses water and converts to pyrophosphoric acid and metaphosphoric acid further.Usage:It is used for phosphate industry, electroplating ...