指標(biāo)名稱(chēng)

規(guī)格

優(yōu)級(jí)純GR

分析純AR

化學(xué)純CP

含量

≥99.5%

≥99.5%

≥99.0%

水不溶物

≤0.002%

≤0.003%

≤0.005%

氯化物

≤0.0005%

≤0.001%

≤0.004%

硫酸鹽

≤0.005%

≤0.015%

≤0.05%

鈣

≤0.002%

≤0.004%

≤0.01%

鉀

≤0.1%

-

-

鈉

≤0.004%

-

-

氨水沉淀物

≤0.002%

-

-