. . "hypophosphoric acid"^^ . "110468174"@en-us . "14614490-n"^^ . "113778058"@en-us . . "a crystalline tetrabasic acid (H4P2O6)"@en-us . "0"^^ . . . . . . "0.125"^^ . . "114614490"^^ . "hypophosphoric acid"@en-us .