项目指标

化学纯分析纯特定级

含量(五氧化二磷)≥99%≥99.5%≥99.5%

活性R值1.2 1.7 2.0

还原物(以P2O3计)≤0.02%≤0.01%≤0.005%

澄清度试验合格合格合格

水不溶物≤0.02%≤0.01%≤0.01Chemicalbook%

总氮量(N)≤0.002%≤0.001%≤0.001%

重金属以(Pb计)≤0.002%≤0.001%≤0.001%

铁含量(Fe)≤0.002%≤0.001%≤0.001%

砷含量(As)≤0.01%≤0.005%≤0.0025%