Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 31 FERTILIZERS 31 05 GOODS OF THIS CHAPTER IN TABLETS OR SIMILAR FORMS OR IN PACKAGES OF A 31 05 40 AMMONIUM DIHYDROGENORTHOPHOSPHATE AND MIXTURES THEREOF Commodity Code Description 31 05 40 00 AMMONIUM DIHYDROGENORTHOPHOSPHATE AND MIXTURES THEREOF