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規(guī)格
指標(biāo)名稱
|
二級
|
三級
|
指定級
|
|
含量/%
|
≥99.0
|
≥98.0
|
根據(jù)客戶要求定做
|
|
澄清度試驗(yàn)
|
合格
|
合格
|
|
|
鹽酸不溶物/%
|
≤0.01
|
≤0.03
|
|
|
干燥失重/%
|
——
|
——
|
|
|
堿度（以O(shè)H計(jì)），mmol/100g
|
≤0.25
|
≤0.25
|
|
|
氯化物(以Cl計(jì)) /%
|
≤0.002
|
≤0.01
|
|
|
硫酸鹽(以SO4計(jì)) /%
|
≤0.01
|
≤0.05
|
|
|
總氮量(以N計(jì)) /%
|
——
|
——
|
|
|
鈉(以Na計(jì)) /%
|
≤0.1
|
≤0.3
|
|
|
鎂(Mg) /%
|
≤0.05
|
≤0.20
|
|
|
鉀(K) /%
|
≤0.005
|
≤0.05
|
|
|
鍶(Sr)/%
|
≤0.05
|
≤0.10
|
|
|
鐵(Fe) /%
|
≤0.001
|
≤0.005
|
|
|
鋇（Ba）/%
|
≤0.02
|
≤0.04
|
|
|
重金屬(以Pb計(jì)) /%
|
≤0.001
|
≤0.005
|
