焦亚硫酸钠

检测项目 精制级 高纯级 食品级 工业级
主含量 (以Na2S2O5计) % ≥ 98.5 98 97.5 97.0
铁含量 (以Fe计) % ≤ 0.0005 0.001 0.0015 0.002
水不溶物含量 % ≤ 0.005 0.01 0.02
砷(以As计)含量 % ≤ 0.00005 0.0001 0.0001 0.0001
澄清度 澄清 澄清 澄清
重金属含量(以Pb计) % ≤ 0.00005 0.0005 0.0002
NaCl含量 % ≤ 0.012
PH值 ≤ 4.0-4.6
包装:25kg、50kg、1000kg袋。
 



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