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關鍵詞:無水碳酸鈉
項目 | 分析純 (A R) | 化學純 (C P) |
含量% | ≥99.5 | ≥99.5 |
澄清度試驗 | 合格 | 合格 |
水不溶物% | ≤0.005 | ≤0.02 |
干燥失重% | ≤0.5 | ≤0.5 |
碘化物(I)% | ≤0.002 | ≤0.012 |
溴化物(Br)% | ≤0.01 | ≤0.05 |
硫酸鹽(SO4)% | ≤0.002 | ≤0.005 |
氮化合物(以N計)% | ≤0.001 | ≤0.003 |
磷酸鹽(PO4)% | ≤0.001 | —— |
鎂(Mg)% | ≤0.002 | ≤0.005 |
鉀(K)% | ≤0.02 | ≤0.04 |
鈣(Ca)% | ≤0.005 | ≤0.01 |
亞鐵氰化鉀% | ≤0.0001 | —— |
鐵(Fe)% | ≤0.0002 | ≤0.0005 |
砷(As)% | ≤0.00005 | ≤0.0001 |
鋇(Ba)% | ≤0.001 | ≤0.001 |
重金屬(以Pb計)% | ≤0.0005 | ≤0.001 |