镍(Ni)Nickel

≥22%

铁(Fe)Ferric

≤0.005%

铜(Cu)Copper

≤0.003%

铅(Pb)Lead

≤0.003%

锌(Zn)Zinc

≤0.005%

水不溶物 Water insolubles

≤0.05%

硝酸盐(NO3) Nitrate

≤0.02%