二氧化硅99.8%,莫氏硬度7.5,密2.66g/cm3,规格 0.5-1mm,1-2mm,2-4mm,4-8MM,8-16mm,16-32mm,40-80目,100-120目,325目。
硅99.95%,铝0.006%,铁0.0053%,镁0.0012%,钙0.009%,钾0.0069%,白度96
硅99.26%,铝0.14%,铁0.26%,钠0.13%
硅99.2%,铝0.37%,铁0.316%
硅99.5%,铁0.05%
40-140目,铁100ppm
4N高纯石英砂,70-140目,硅99.991%,白度93