A new anti-tarnish agent has been screened out, based on phytic acid, sodium benzoate, sodium molybdate and EDTA by means of orthogonal analysis and conditional experiments.

• 采用正交试验和条件试验,筛选出了一种以植酸、苯甲酸钠、钼酸钠和EDTA为基本组成的镍磷合金抗蚀防变色剂。