Anhydrous copper sulfate is stable under normal temperature and pressure, does not deliquesce, and gradually weathers in dry air. When heated to 45 ° C, it loses two molecules of water of crystallization. At 110 ° C, it loses four molecules of crystal water, and at 150 ° C, it loses all crystal water. Anhydrated. The anhydrate is also easily converted to copper sulfate pentahydrate. This property is often used to test whether certain liquid organics contain traces of moisture. The copper sulfate pentahydrate is heated to a high temperature of 650 ° C to decompose into black copper oxide, sulfur dioxide and oxygen.

Cholesterol is a natural aqueous copper sulfate and is a widely distributed sulfate mineral. It is a secondary mineral formed by the decomposition of copper sulfide by oxygen. The oxidative zone of cholesteric copper deposits is also often found on the inner walls and pillars of mine tunnels, which are crystallized from water in the mine. The crystals of cholesta are plate-like or short-column, and these crystals are aggregated in the form of granules, blocks, fibers, stalactites, and hulls. They have a beautiful blue color, but if exposed to dry air, they become opaque, light green-white powders due to the loss of water. At the same time, timid is very soluble in water. Cholesterol is a chemical raw material for pigments, batteries, insecticides, wood preservation, etc.

Pretreatment of feed grade sandy anhydrous copper sulfate, in addition to the function of copper sulfate, has less dust during use, greatly reducing environmental pollution and stimulation of workers' skin and respiratory tract; and ensuring premixing at the same time The amount of copper added. The fluidity is good, the mixing uniformity is good in the production process; and the agglomeration phenomenon is not easy to occur at the same time. In the production process, since no carrier is added, there is no physical or chemical change caused by contact with other substances. Since the contact surface with nutrients such as vitamins and amino acids is small in the premixed feed and feed, the damage to the above nutrients is reduced. Since the product is sand-like and has a small contact surface with air, it can reduce the oxidation of copper ions, thereby increasing its potency. The free acid content is low. The number of copper ions, sulfate ions and crystal water molecules in each group of copper sulfate crystals is 1:10, which is blue. Under heating conditions, the crystal water can be completely lost, and the copper sulfate crystals become white.

Copper sulphate is one of the most important copper salts and is widely used in electroplating, printing and dyeing, pigments and pesticides. The inorganic pesticide Bordeaux mixture is a mixture of copper sulfate and lime milk. It is a good fungicide and can be used to control diseases of various crops. In 1878, in the city of Bordeaux, France, most of the vines died of worm disease, and the trees on both sides of the road were afraid of pedestrians picking. The trunk was coated with quicklime and copper sulphate solution, the trunk was whitened, and the pedestrians looked uncomfortable. Eat, these trees are not dead, further research knows that this mixture has bactericidal ability, hence the name Bordeaux mixture. The ratio of Bordeaux mixture, copper sulfate and quicklime (preferably chunky fresh lime) is generally 1:1 or 1:2, and the amount of water is determined by factors such as different crops, no disease and seasonal temperature. It is best to use the "two-liquid method" when preparing, that is, firstly mix the copper sulfate and the quick lime with the required half amount of water, and then pour into another container at the same time, and continuously stir to obtain a navy blue gel. Bordeaux mixture should be used now, because the gelatinous particles will gradually become larger and lower and the effect will be reduced. Copper sulfate is also commonly used to prepare other copper compounds and electrolytes for electrolytically refining copper. Copper sulfate pentahydrate can be obtained by the action of copper oxide and sulfuric acid or copper and concentrated sulfuric acid, followed by concentration and crystallization. Metal oxide can be used sulfuric acid from the system CuSO4 copper in the laboratory.

Indicator name indicator

Copper sulfate content (calculated as CuSO4·5H2O)% ≥ 98.5

Copper sulfate content (calculated as Cu2+)% ≥ 25

Lead (in terms of Pb)% ≤ 0.001

Arsenic (as AS)% ≤ 0.0005

Fineness 30-80

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