In acidic medium, the interaction of potassium dihydrogen phosphate with ammonium molybdate, potassium antimonyl tartrate and ascorbic acid result in blue compound complex.

在酸性介质中,磷酸二氢钾与钼酸铵、酒石酸锑钾及抗坏血酸作用,生成蓝色的络合物。