We are offering phosphoric acid. specificationmy s=k=y=p=e: alice.chen601item food gradecolority 20content (h 3 p o 4 ), % 75.086.0%chloride(cl ) , % sulphates( so 4 ), % iron(fe), % arsenic (as) , % 0.00005arsenic (pb), % 0.0005heavy metals ( f), % 0.0010easily oxidated matter( h 3 po 3 ), % 0.012.