Shipment of Phosphoric Acid

Until the early 1970s, phosphoric acid trade was largely confined to sales between companies in the United States and trade amor countries in Western Europe. During the period 1973 to 1978 the volume of merchant-grade phosphoric add more than tripled from 1.03 million tonnes of solution in 1973 to more than 3.5 million tonnes in 1978. Since 1978 world trade in phosphoric acid has continued to expand annual trade volumes increased in each subsequent year until 1985 when trade was reduced to 80% of the previous year s 

70% i hosFrfK penioxide I (8.5i%jmpuiities FI orine,-l— SulKirtrioxide, Alurriinum ojjide, find Fenib o (ide)i 

Type of Rock Florida Western U.S.A. North Carolina Morocco Togo Taiba 

Color Black Green Green Green Dark Dark 

Advantages of phosphoric acid as a source of P2O5 are versatility, rapid loading and unloading of ships, and high concentration. Phosphoric acid may be used to produce any desired phosphate or compound fertilizer to meet local needs TSP or ammonium phosphates are less versatile. 

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