But a trick discovered in the 1970s helped: dipping ancient shells in sodium hypochlorite (the active ingredient in household bleach) and then exposing them to ultraviolet light revealed colours and patterns that could not otherwise be seen.
The astatate ion, (AtO3)−, is coprecipitated with insoluble iodates, such as silver iodate (AgIO3), and is obtained by the oxidation of lower oxidation states with hypochlorite, periodate, or persulfate.
Dakin's solution, also called Dakin's fluid, or Carrel Dakin fluid, antiseptic solution containing sodium hypochlorite and developed to treat infected wounds.
This substance, usually prepared by heating the cobaltic hydroxide that is precipitated from cobalt-containing solutions by sodium hypochlorite, has a number of important uses in the glass and ceramics industries.
It remained the standard bleaching agent until the 1920s, but then it was gradually replaced by liquefied chlorine and solutions of sodium hypochlorite.
The electrolysis of aqueous sodium chloride produces sodium hypochlorite, NaOCl, a compound of sodium, oxygen, and chlorine used in large quantities in household chlorine bleach.
Chlorine compounds may be applied in liquid and solid forms for instance, liquid sodium hypochlorite or calcium hypochlorite in tablet or granular form.
In 1895 Dow founded the Dow Process Company to electrolyze brine for chlorine (producing caustic soda and sodium hypochlorite) at Navarre, Ohio, soon moving the company to Midland and creating the Dow Chemical Company (1897) to absorb the Midland Chemical and Dow Process.
Sodium hypochlorite is also utilized as an industrial bleach for paper pulp and textiles, for chlorination of water, and in certain medicinal preparations as an antiseptic and a fungicide.
Calcium hypochlorite, Ca(ClO2), widely used as bleaching powder, is produced by the action of chlorine on calcium hydroxide.
