Cyanuric Acid powder , granular or colored tablet form 98.5%min Cyanuric Acid General DescriptionFormula : C3H3N3O3 Molecular Weight : 129. ... weedkiler and metal cyaniding slow corrodent. And it also can be directly used as swimming pool chlorine stabilizer,nylon, plastic, polyseter ... :15g, 25g, 50g, 100g,150g,200g,250g, 330g. Cyanuric Acid 98.5%min Form: Granular Powder Tablets