Sentence:  These widely advertised products , which are used primarily for washing clothes , are based on <WSD>high-sudsing</WSD> , synthetic organic actives ( sodium alkylbenzenesulfonates ) and contain up to 50 % by weight of sodium tripolyphosphate or a mixture of sodium tripolyphosphate and tetrasodium pyrophosphate . 
Meaning of the word marked with <WSD> tags:  (used of e.g. detergents) producing many suds