a colourless soluble solid tribasic acid used in the manufacture of fertilizers and soaps. Formula: H3PO4
Also called: phosphoric acid
orthophosphoric acid in American English
(ˌɔrθəfɑsˈfoʊrɪk)
a clear, colorless, syrupy liquid or a colorless, crystalline solid, H3PO4, produced from phosphorus or phosphate rock and used in the manufacture of fertilizers, textiles, etc.