过二硫酸钾（过硫酸钾）

K2S2O8

性状：无色结晶或白色结晶粉末。

分子量：270.32

氧化性，具有刺激性。

技术条件

总氮量（N）                                                                  ≤0.005%

氯化物及氯酸盐（以Cl计）                                             ≤0.002%
水不溶物                                                                        ≤0.005%

重金属（以Pb计）                                                         ≤0.001%   
锰（Mn）                                                                      ≤0.0001%

铁（Fe）                                                                       ≤0.0002%

澄清度试验/号                                                               ≤3

含量（K2S2O8）                                                           ≥99.5%