Item Caprolactam grade Ammonium sulfate crystal by SINOPEC Nitrogen Content % ¡Ý 21 Moisture %¡Ü 0.3 Free acidity(H2SO4): %¡Ü 0.05 size 0-4mm 90% 20'container 25MT/Container Packing 50KG,1.1MT/bag 1.       25kg/bag,26MT/container 20GP 2.       50kg/bag,25MT/container 20GP 3.       1000kg/bag, 20MT/container 20GP 4.       1100kg/bag, 22MT/container 20GP