Water-decomposable fibrous sheet containing water-insoluble carboxymethyl cellulose

A water-decomposable fibrous sheet comprising water-dispersible fibers and water-insoluble carboxymethyl cellulose, wherein;

• the water-insoluble carboxymethyl cellulose has a degree of substitution for etherification (DE) falling between 0.3 and 0.6, and, in the water-insoluble carboxymethyl cellulose, the hydrogen of the carboxyl group in at least 95% of the carboxymethyl groups is substituted with a metal;
• and wherein the water-decomposable fibrous sheet has a degree of decomposition in water of at most 100 seconds measured when wet, a strength at breakage when dry of at least 1000 g/25 mm, and a strength at breakage when wet of at least 100 g/25 mm.