Section 06 Products of the chemical or allied industries 31 Fertilisers 31 03 Mineral or chemical fertilisers, phosphatic. 31 03 11 Containing by weight 35 % or more of diphosphorus pentaoxide (P2O5) Commodity Code Description 31 03 11 00 Containing by weight 35 % or more of diphosphorus pentaoxide (P2O5)