1, Water soluble Chitosan 2, CAS: 83512-85-0 3, Color :light yellow powder ItemstandardAppearancewhite or slight yellow powder or flakyOdorodorlessInsoluble matter %≤1.0Moisture %≤15Viscosity mpa.s10-1000Degree of substitution %≥80pH7-9Heavy Metals ppm≤10Arsenic ppm≤0.5 Carboxymethyl Chitosan,CAS: 83512-85-0