Commodity2005200620072008200920102011
Phenazone (antipyrin) & its derivs.    $196  
Heterocyclic comps. cont. an unfused pyrazole ring (whether or not hydrogen ...$78      
Hydantoin & its derivs.   $1,457  $4,243
Heterocyclic comps. cont. an unfused imidazole ring (whether or not hydroge ... $597$1,375 $1,577$124$9
Pyridine & its salts  $52 $169  
Heterocyclic comps. cont. an unfused pyridine ring (whether or not hydrogen ...$88,907$12,117$1,148$1,145$269$4,983$3,687
Heterocyclic comps. cont. a pyrimidine ring (whether or not hydrogenated)/p ...$141    $17 
Melamine  $68,348$36,257   
Heterocyclic comps. cont. an unfused triazine ring (whether or not hydrogen ...  $8,005$119,607$8,810$428$21,368
Lactams (excl. of 2933.71 & 2933.72)$366  $759 $2,127$37,807
Total$89,492$12,714$78,928$159,225$11,021$7,679$67,114