|
规格
指标名称
|
一级
|
二级
|
三级
|
指定级
|
|
含量/%
|
≥99.5
|
≥99.0
|
≥98.0
|
根据客户要求定做
|
|
澄清度试验
|
合格
|
合格
|
合格
|
|
|
水不溶物/%
|
≤0.005
|
≤0.005
|
≤0.03
|
|
|
干燥失重/%
|
≤0.8
|
≤1.0
|
≤2.0
|
|
|
氯化物(Cl) /%
|
≤0.001
|
≤0.003
|
≤0.01
|
|
|
硫化合物(以SO4计) /%
|
≤0.002
|
≤0.003
|
≤0.01
|
|
|
总氮量(N) /%
|
≤0.001
|
≤0.001
|
≤0.01
|
|
|
磷酸盐及硅酸盐(以SiO2计) /%
|
≤0.004
|
≤0.005
|
≤0.02
|
|
|
钠(Na) /%
|
≤0.02
|
≤0.05
|
≤0.10
|
|
|
镁(Mg) /%
|
≤0.000 5
|
≤0.002
|
≤0.005
|
|
|
铝(Al) /%
|
≤0.005
|
-
|
-
|
|
|
钙(Ca)/%
|
≤0.002
|
≤0.002
|
≤0.02
|
|
|
铁(Fe) /%
|
≤0.000 5
|
≤0.000 5
|
≤0.002
|
|
|
铜(Cu) /%
|
≤0.000 5
|
≤0.000 5
|
≤0.001
|
|
|
砷(As) /%
|
≤0.000 05
|
-
|
-
|
|
|
铅(Pb) /%
|
≤0.0005
|
≤0.0005
|
0.001
|
