... colloid. It could be used as filling agent for synthetic detergent; used for the manufacturing of chemical products such as sodium ... sulfide, ultramarine, sodium silicate, etc; used for the production of sulfate pulp in the paper industry; could ... fiber, leather making , non-ferrous metals, enamels ,soap, etc. 2.Data for reference Item GB/T6009-2003 I group First qualityNormal qualityMedium ...