improved alkaline chlorinated concentrate compositions are provided which exhibit reduced chlorine loss over extended storage periods and which , when diluted , yield high foaming chlorinated use solutions . the concentrate compositions of the invention include from about 0 . 5 - 8 % by weight alkali metal hypochlorite , from about 1 . 0 - 20 % by weight of alkali metal hydroxide , and at least about 3 % by weight of a surfactant system including respective amounts of a chlorine - stable trialkylamine oxide and a saturated c 6 - c 12 fatty acid soap , with an amine oxide : fatty acid soap weight ratio of from about 90 : 10 to about 25 : 75 . the ph of the concentrates exceeds 12 . 5 .