Productdescription:itemsspecificationspecificationgradeBT-70(abrasive)BT-701(thickener)formWhitepowderWhitepowderwhiteness≥96≥96SiO2content≥98≥98PHvalue≥7≥7Adverageparticalsize13-15um9-11um105℃volatile%≤8≤6Ignitionloss900℃%≤8.5≤6.5Drinkvalueml/20g18-2040-60Na2SO4content%Sodiumsulfatc≤0.4≤0.4SulfidecontentnaughtnaughtIroncontentmg/kg149149N***content%≤0.1≤0.1He***ymetalcontentmg/kg≤15≤15Ascontentmg/kg≤2.0≤2.0Germcountcfu/g≤200≤200HealthcertificationNo.LWSZZ(2007)No.370000-000082LWSZZ(2007)No.370000-000082ProducecertificationNo.XK13-217-00815XK13-217-00815)