| abstract |
A detergent tablet for a dishwashing machine wherein at least about 10% by weight of the tablet is dissolved in the pre-rinse cycle of said machine. The tablet comprises a mixture of hydrated sodium metasilicate, anhydrous sodium metasilicate, anhydrous penta-alkali metal tripolyphosphate wherein the ratio by weight of the anhydrous tripolyphosphate to the anhydrous sodium metasilicate is from about 1:2 to 2:1, an active chlorine compound, and a tabletting aid comprising a mixture of from about 1 to about 5% by weight of sodium acetate and from about 2 to about 6% by weight of spray-dried sodium zeolite NaA, based on the weight of the tablet. |