|
规格
指标名称
|
一级
|
二级
|
三级
|
指定级
|
|
含量/%
|
≥99.8
|
≥99.8
|
≥99.8
|
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
|
≤0.01
|
≤0.02
|
|
|
干燥失重/%
|
≤0.5
|
≤1.0
|
≤1.0
|
|
|
氯化物(Cl) /%
|
≤0.001
|
≤0.002
|
≤0.005
|
|
|
硫化合物(以SO4计) /%
|
≤0.003
|
≤0.005
|
≤0.01
|
|
|
氮化合物(以N计) /%
|
≤0.001
|
≤0.001
|
≤0.002
|
|
|
磷酸盐及硅酸盐(以SiO3计) /%
|
≤0.0025
|
≤0.006
|
≤0.013
|
|
|
镁(Mg) /%
|
≤0.0005
|
≤0.002
|
≤0.005
|
|
|
铝(Al) /%
|
≤0.001
|
≤0.003
|
≤0.01
|
|
|
钾(K) /%
|
≤0.005
|
≤0.005
|
≤0.02
|
|
|
钙(Ca)/%
|
≤0.005
|
≤0.01
|
≤0.02
|
|
|
铁(Fe) /%
|
≤0.0003
|
≤0.0005
|
≤0.001
|
|
|
重金属(以Pb计) /%
|
≤0.0005
|
≤0.0005
|
≤0.001
|
厂家直销试剂级无水碳酸钠