... %) water adsorption:>95% Whiteness:>70min Specific weight:1 m2 : 710kg pet litter Heishan is abundant in natural bentonite,in which the ... of bentonite is the first rank in asia.Advantage: This product is nonpoisonous, have good cohesiveness, expansibility, adsorption,thixotropy, expanding supending ... ≥99%)water adsorption:>95%Whiteness:>70minSpecific weight:1 m2 : 710kg pet litter