Aqueous dispersion preparations containing microfibers of cellulose

Abstract

The invention relates to an aqueous dispersion containing cellulose fibers of an average fiber diameter greater than or equal to 500 nm, such that when the aqueous dispersion is adjusted to a concentration of 1% by mass, is spread evenly on a horizontal plane and dried to form a sheet, and the Xpé density obtained from iron atoms and the Xk density obtained from potassium atoms are calculated by X-ray fluorescence of the resulting sheet, the relationship expression Χγε / Χκ < 150 is satisfied.