硫脲

性状：无色结晶。密封保存。

技术条件

含量（H2NCSNH2），%                                                     ≥99.0

灵敏度试验                                                                           合格

                                杂质最高含量（以%计）

澄清度试验，号                                                                     3

水不溶物                                                                               0.002

干燥失重                                                                               0.5

灼烧残渣（以硫酸盐计）                                                       0.005

硫酸盐（SO4）                                                                     0.005

硫氰酸盐（以SCN计）                                                           0.005

重金属（以Pb计）                                                                 0.001