Calcium hypochlorite (stable bleaching powder) of “HTH” equivalent quality in granular or powder (or on request in 7g briquettes/compressed pastille) form, in 40 or 45 kg drums for sea shipment only.
Standard is granular or powder form.
Available chlorine: Minimum 67% at time of packing.
(General quality definition: Minimum 70% at time of packing, defined as 68% average Chlorine available level and 65% Chlorine available guaranteed.)
Moisture content: Maximum 10% for Transport UN number 2880 (5.5-10% for hydrated mixture), or inferior to 5.5% as per UN Number 1748 for dry Calcium Hypochlorite (or for Briquettes 7g).
Particle size: 0.5mm. minimum 99.5% according to British Standard Specifications.
Heavy metal concentration (Arsenic, Lead, Cadmium, Mercury, etc…): nil
Stability: does not lose more than 1/15th of available chlorine on heating at 100°C +/-2°C for two hours.
General appearance: dry, free flowing, low dusting, consistent white granules (or powder) and without hard lumps or impurities.
Shelf life: Generally 2 years, depending on storage conditions
Storage: Dry and cool (below 30-35 degrees Celsius)