Silver powder (grade PSr1) Ag

Gray-white powder
Detailed description:
Mass fraction of silver (Ag), %, not less than 99.90
Mass fraction of impurities, %, not more than:
— copper (Cu) 0.005
— iron, zinc, lead, bismuth, antimony, aluminum (total) 0.01
— sulfates (SO4) 0.004
— nitrates (NO3) 0.001;
Mass fraction of moisture, %, not more than 0.03;
Mass fraction of substances insoluble in nitric acid, %, not more than 0.05