Abstract: An object of the present invention is to stably and efficiently provide an oxidized cellulose having excellent fibrillatability. The above object can be achieved by a method of producing an oxidized cellulose, which contains an oxide of a cellulose raw material by a hypochlorous acid or a salt thereof, is substantially free of N-oxyl compounds, and has a degree of polymerization of 600 or less, the method including a step of obtaining an oxidized cellulose by oxidizing a cellulose raw material using a hypochlorous acid or a salt thereof, wherein viscosity of a slurry of the cellulose raw material having the same concentration as when the oxidation is performed is in a range of 1,000 Pa·s or less at 30° C. or 40° C.

Abstract: The present invention has an object to provide an efficient production method of a nanocellulose-containing composition. The object can be achieved by a production method of a composition containing nanocellulose, including: a step of stirring a mixture containing oxidized cellulose and a component constituting the composition other than the nanocellulose to fibrillate the oxidized cellulose into the nanocellulose, wherein the oxidized cellulose includes an oxide of a cellulose raw material by a hypochlorous acid or a salt thereof.

Abstract: The present invention provides a nanocellulose that does not contain a N-oxyl compound in the cellulose fibers, exhibits an excellent dispersion stability in dispersion media, is the oxide of a cellulose raw material by a hypochlorous acid or a salt thereof, and has an average fiber width of from at least 1 nm to not more than 200 nm. The nanocellulose substantially does not contain a N-oxyl compound and has a zeta potential of less than or equal to ?30 mV.

Abstract: The present invention provides an oxidized cellulose that exhibits an excellent fibrillatability and is an oxide of a cellulose raw material by a hypochlorous acid or a salt thereof. The oxidized cellulose substantially does not contain a N-oxyl compound and has a degree of polymerization of not more than 600.