Bleachind powder is calcium oxychloride
Calcium hypochloriteis aninorganic compoundwithformulaCa(ClO)2. As a mixture with lime and calcium chloride, it is marketed aschlorine powderorbleach powderforwater treatmentandas ableachingagent.[1]This compound is relatively stable and has greater availablechlorinethansodium hypochlorite(liquid bleach).[2]It is a white solid, although commercial samples appear yellow. It strongly smells ofchlorine, owing to its slow decomposition in moist air. It is not highly soluble in water and is more preferably used insoft to medium-hard water. It has two forms: dry and hydrated.

CaoCl2
CaOCl2\xa09 valcium oxy chloride)reaction of calcium hydroxide with chlorine results in the formation of bleaching powder
Calcium Hydroxide is bleaching powder it is white powder it reacts with DilLute acid to produce chlorine it is used for manufacturing chloroform and making wool unshrinkable