Hypochlorite compositions, methods of manufacture and uses thereof

An uncoated admix comprising:

• a) calcium hypochlorite (Ca(OCl)2) having an available chlorine content of from 65-80% and a water content of about 4% to about 10% w/w;
• and
• b) a hydrated phase change material (PCM);
• wherein the Ca(OCl)2 and the hydrated PCM are physically and intimately mixed in approximately stoichiometric proportions to form a solid crystalline form;
• wherein the hydrated PCM is a hydrated alkali metal salt selected from hydrated Na2CO3, hydrated Na2SO4, hydrated Na3PO4, hydrated NaHCO3, hydrated NaHSO4, hydrated Na2HPO4 or hydrated NaH2PO4;
• and
• wherein the uncoated admix is about 30% w/w to about 45% w/w water;
• wherein the hydrated PCM is about 55% w/w to about 65% w/w of the uncoated admix;
• wherein the Ca(OCl)2 is about 35% w/w to about 45% w/w of the uncoated admix;
• and
• wherein the uncoated admix has an available chlorine content of from 20-35%.