指标名称 | 规格 | |||
优级纯 | 分析纯 | 化学纯 | 特殊规格可定制 | |
含量(HPO).w/% | ≥85.0 | >85.0 | >85.0 | |
色度/黑曾单位 | ≤10 | ≤25 | ≤25 | |
挥发酸(以H+计)/(mmol/g) | ≤0.000 2 | ≤0.000 2 | ≤0.000 2 | |
氯化物(C)，w/% | ≤0.000 2 | ≤0.000 3 | ≤0.000 5 | |
硫酸盐(SO)，w/% | ≤0.001 | ≤0.003 | ≤0.01 | |
硝酸盐(NO;)，w/% | ≤0.000 3 | ≤0.000 5 | ≤0.000 5 | |
砷(As)w/% | ≤0.000 05 | ≤0.000 05 | ≤0.000 1 | |
铁(Fe),w/% | ≤0.001 | ≤0.002 | ≤0.002 | |
钠(Na),w/% | ≤0.025 | ≤0.05 | ≤0.06 | |
钾(K)w/% | ≤0.003 | ≤0.005 | ≤0.006 | |
锰(Mn).w/% | ≤0.000 2 | ≤0.000 2 | ≤0.000 5 | |
镍(Ni)，w/% | ≤0.000 3 | ≤0.000 5 | ≤0.001 | |
铜(Cu).w/% | ≤0.000 3 | ≤0.000 5 | ≤0.001 | |
锌(Zn).w/% | ≤0.000 5 | ≤0.001 | ≤0.001 | |
镉(Cd).w/% | ≤0.000 3 | ≤0.000 5 | ≤0.000 5 | |
铅(Pb),w/% | ≤0.000 5 | ≤0.001 | ≤0.001 | |
还原物质(以H:PO:计),w/% | ≤0.000 5 | ≤0.01 | ≤0.03 | |
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