we are offering Zeolite 4a. -white powder, non toxic -good fluidity USES 1. ideal for phosphate free addition that substitutes for STPP as a detergent builder. It is used in the detergent industry only ITEM : ZEOLITE -4A INDUSTRY : DETERGENT PACK : 25 KG HDPE BAGS RESULT OF ANALYSIS: APPEARANCE : WHITE FINE POWDER Al2O3 (%) : 28.6 % SiO2 (%) : 39.5 % Na2O (%) : 15.7% WHITENESS : 97% MIN REPORT: The sample complies with the prescribed Standard quality.