Main composition: Ca(ClO)2, white powder or granule UN NO: 2880 IMDG: 5.1 Mainly used in water treatment, bleaching,disinfection and bio-chemical treatment of pollutants.Supply Amount:Annual output 50000tons . Standard: GB/T10666-2008 Item Grade   Best quality First quality Qualifier Effective chlorine % 70.0min 67.0min 65.0min Granularity(14-50 meshes)% 90min 87min 87min Moisture% 5-10%max 5-10%max 5-10%max Packing: 1.Plastic drum with polythene bag, net wt.40kg/drum, 45kg/drum ,50kg/drum, "Oxidant" label should be signed. 2. Stored in dry, cool and draughty place; avoid insolation, fire and heat; no mixing with organic substances, acids or reducing agents If you have any demand about my products.