检验项目                  标准规定                检验结果

  性状           本品应为白色或近白色细小粉末       符合规定

鉴别                         应呈正反应                      呈正反应

 碳水化合物,w/%             97.0-102.0                      97.4

 干燥减量,w/%                      ≤7.0                         3.9

    pH值                            5.0-7.5                          6.7

  灼烧残渣,w/%                    ≤0.05                       0.03

   水溶物,w/%                     ≤0.24                         0.18 

铅含量, Pb/(mg/kg)                ≤2.00                       0.24