Some customers inquired what are the methods of analyzing the acid bright copper plating solution? In this article, we will discuss the analytical methods of copper sulfate, hoping to share some ideas for plating plants.
In the copper sulfate analysis of acid bright copper plating solution, the titration method is generally used, the advantage of this method is that the operation is fast and easy to operate.
It proceeds as follows:
We first pipette 1ml out of the plating solution, put it in a 250ml conical flask, add 50ml of water, add 10ml of 20% sulfuric acid, add 10ml of 20% potassium iodide, add a small amount of starch indicator, and then titrate with 0.1 mol/L sodium thiosulfate until the blue color disappears as the end point, and record the consumption of sodium thiosulfate at this time. The content of copper sulfate can be calculated according to the following equation.
Calculation:
CuSO4 (g/L) = C x V x 249.7
C - concentration of Na2S2O3 standard solution
V - consumed volume of Na2S2O3
Conclusion
Above is the analysis method of copper sulfate composition, in plating production, plating solution analysis is an indispensable component. When customers use Bigely acid copper plating brightener, they need to carry out periodical laboratory tests on the plating solution in order to understand the main components and impurity content of the plating solution in time, we will arrange engineers to provide technical support to assist customers to control the composition of the plating solution in the range of process conditions, in order to ensure normal production.
If you are interested in acid bright copper plating process, please feel free to contact us.
