Commodity2005200620072008
Disodium sulphate $230  
Sodium sulphates other than disodium sulphate $75$248$985
Sulphates of magnesium$5,269$9,783 $3,904
Sulphates of aluminium$27$518$45 
Sulphates of copper$189 $558$195
Sulphates of zinc$35$908$223 
Sulphates of barium  $362 
Sulphates (excl. of 2833.21-2833.27)$580$1,162$3,780$34
Alums$110   
Peroxosulphates (persulphates)$726$15  
Total$6,936$12,691$5,216$5,118