14 二氧化硅
执行标准:FCC-1983 |
|
含 量(SiO2)
|
≧94.0%
|
砷
|
≤0.0003%
|
重金属(as Pb)
|
≤0.003%
|
干燥失重(1050C 2hr)
|
≤7.0%
|
灼烧失重(10000C 1hr)
|
≤8.5%
|
硫酸盐 (as Na2SO4)
|
≤5%
|
筛余物(325 MESH)
|
≤5%
|
砷
|
0.0003% MAX
|
PH值 (5% 溶液)
|
6.0---7.5
|
结论
|
符合FCC-1983
|