Basic copper sulphate is an important raw material fo […]
Basic copper sulphate is an important raw material for the preparation of other copper-containing compounds. Mix with lime milk to obtain a Bordeaux liquid for use as a fungicide. It is also used for electrolytic refining of copper. In the agricultural industry, basic copper sulphate is also a trace element fertilizer that improves chlorophyll stability, prevents chlorophyll from being destroyed prematurely, promotes crop uptake, and is used for seed treatment and external root tracking.
All of the above mentioned are industrial uses of basic copper sulphate, which may not be well understood by many people as a food additive. In our knowledge, copper is a heavy metal ion, so if we use basic copper sulphate as a food additive, will it have a bad effect on our body? Although copper is a heavy metal ion, copper is also a trace element in our bodies. There are also grades of basic copper sulphate, which are divided into industrial and food grades. In the National Food Safety Standard GB14880-2012, it is explicitly stated that basic copper sulphate can be a source of copper. In typical dairy products, the elemental copper addition is 3-7.5 mg/kg, which translates to an upper limit of approximately 12-16 mg/kg of anhydrous basic copper sulphate. According to our food additive standard GB2760-2011, it can be used as a clarifying agent and chelating agent in wine and egg processing, there is no absolute ban on its use in food. Therefore, basic copper sulphate food additives exist and are legal.