项目:                                          标准:

外观                                   白色或微黄色粉末或颗粒

鉴别                                    符合结果

含量                                    98.0～102.0%

砷盐                                    ≤3PPM MAX

铅盐                                    ≤0.001%

硫酸盐                                  ≤0.05%

氯化物                                  ≤0.07%

还原物                                  ≤0. 5%