Rice Husk Ash High Carbon Powder Application Purpose : Agricultural, Horticultural, and Other Industry Function : Organic fertilizer or mulch, and industrial additives Supply Ability : Minimum 250 - 300 Ton per Month Product Specification Powder type : Dry Powder size : Pass screening 25mesh Colour : Black - Grey Chemical properties (Oxide compounds) : SiO2 : 17.5% P2O5 : 0.0991% SO3 : 0.0150% K2O : 0.796% CaO : 0.0899% MnO : 0.0357% Fe2O3 : 0.0141% Ag2O : 0.105% Cl : 0.105% C : 81.3%