594352 Disclosed is a composition comprising: a cellulosic or lignocellulosic material having a peak average molecular weight, as determined by Gel Permeation Chromatography, of less than about 25,000, and a crystallinity of less than about 55 percent as determined by X-ray diffraction, wherein the material has a bulk density of less than about 0.5g/cm3, as determined according to ASTM D1895B.