| The merchandise covered by this order includes all grades of aqueous, acidic (non-neutralized) concentrations of 1-hydroxyethylidene-1, 1-diphosphonic acid C2H8O7P2 or C(CH3)(OH)(PO3H2)2 also referred to as hydroxethlylidenediphosphonic acid, hydroxyethanediphosphonic acid, acetodiphosphonic acid, and etidronic acid. The CAS (Chemical Abstract Service) registry number for HEDP is 2809-21-4. The merchandise subject to this order is currently classified in the Harmonized Tariff Schedule of the United States (HTSUS) at subheading 2931.00.9043. It may also enter under HTSUS subheading 2811.19.6090. |