Development in Quantities and Market Share

World consumption of nitrophosphates increased from 3.46 million tonnes of P2O5 in 1975 to 3.9 million tonnes in 1988 this represents an increase of 13% in 13 years, and nitrophosphates supplied less than 10% of world fertilizer P2O5 in 1988 [18]. 

Changes in the relationship between the prices of sulfur and costs of feedstock and energy, which occurred in the mid-1980s, reactivated interest in nitrophosphates. 

Even though the process was not successful in America, BASF and Norsk Hydro promoted it in Western Europe. Plants were operating in several-countries of Western and Eastern Europe before 1980. Since 1980, licenses have been granted for factories in Russia, China, and India 19,19]. 

Under these influences, world consumption of nitrophosphates increased to 4.33 million tonnes of P2O5 in 1990 this represented 10.5% of world fertil- 

With a reduction of 26%, nitrophosphates were more severely affected by the crisis than the average of fertilizers. The reason for this seems to be that their main market was in Europe, where the fertilizer market decreased more than the world average under the combined influences of fertilizer use restrictions in Western Europe and farm economy disturbances in Eastern Europe and Russia. 

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