Copper sulfate has a wide range of functions and has important uses in industry, electroplating, and agriculture. How to identify whether copper sulfate is of good quality or bad? How to distinguish it? Copper sulfate identification can start from the following two aspects, and adopt corresponding methods according to the customer's actual situation.
1. Accurate method
This method mainly uses chemical methods and is suitable for enterprises, research institutes and other units with laboratories. The details are as follows: Take about 1 gram each of the pre-ground sample to be tested and CuSO4.5H2O (the size of peanuts), put them into two water cups respectively, add 100 ml of clean water, and shake for a few minutes until the crystal blocks are completely dissolved. Measure about 5 ml of each of the above turbid liquids, place them in two glasses respectively, add about 0.5 grams of ammonium bicarbonate to each, shake for 1 to 2 minutes to allow full reaction and color development, leave it for 10 minutes, and observe and compare. . If the colors of the two solutions are the same, with no precipitation or very little precipitation, it proves that the sample quality is qualified; if the blue color of the sample solution to be tested is significantly lighter than that of the pure product, it means that its active ingredient content is lower and may contain some sodium. , magnesium, potassium and other impurities; if a large amount of precipitation appears in the sample, it means that the sample contains more impurities such as iron, aluminum, zinc or calcium. The more precipitation, the lower the effective ingredients. 2. Simple visual inspection method
This method is intended for individuals without testing conditions or emergency judgment, and can only be used as a simple reference. The specific method is as follows. Use multi-point sampling method to collect copper sulfate samples and observe their crystal color. CuSO4.5H2O is a triclinic crystal, and its crystal blocks should be blue. If it contains impurities such as sodium and magnesium, the color of its crystal blocks will gradually become lighter as the impurity content increases. If it contains iron, its crystal color is often blue-green, yellow-green or light green, with varying colors. When observing, CuSO4.5H2O with better quality can be used as a reference.
There are other methods and testing methods for copper sulfate quality identification. If you are interested, please contact our company. In addition to content and other indicators, copper sulfate in the electroplating industry also requires detailed testing of heavy metals and other indicators. In fact, choosing a brand is the most worry-free, and this is also the simplest and most effective method.
