Copper sulfate|CAS7758-99-8

The common form of copper sulfate is its blue crystals ([Cu(H2O)4]SO4-H2O), which are usually dense massive, stalactitic, pericyclic, reniform, and sometimes fibrous. The color is sky blue, blue, sometimes slightly light green. Copper sulfate can be used as mordant, copper plating agent, mineral processing agent, insecticide, fungicide, feed additives, catalyst and so on. Copper sulfate is generally divided into three grades: feed grade, industrial grade, electroplating grade, etc., which are different in terms of trace element indexes and implementation standards.

Basic information

Molecular formula: CuSO4.5H2O

CAS No.: 7758-99-8

Molecular weight: 249.68

EINECS No.: 231-847-6

Chinese name: Copper sulfate; blue alum; choleum copper sulfate pentahydrate

English name: Copper sulfate

Melting point: 110 ℃(dec.)(lit.)

Density: 2.284

Solubility: 20 g/L (20℃)

Production method  

1, sulfuric acid method of copper powder in 600 ~ 700 ℃ for roasting, so that its oxidation made of copper oxide, and then by sulfuric acid decomposition, clarification and removal of insoluble impurities, cooling crystallization, filtration, drying, the production of copper sulfate finished products. The reaction formula is as follows

2Cu + O2→2CuO, CuO + H2SO4→CuSO4 + H2O

2, electrolyte recovery waste electrolyte (containing Cu50 ~ 60 g / L, H2SO4180 ~ 200g / L) and the roasting treatment of copper sludge made of fine copper powder (which is composed of Cu 65% ~ 70%, CuO 20% ~ 30%, and contains a small amount of Cu2O, etc.) for the reaction, the reaction liquid by separating the sedimentation, the clear liquid by the cooling of the crystallization, separation, drying of the system to copper sulfate.

3, recycling method of copper pollution is a nitrogen fertilizer plant ammonia raw material gas copper washing tower in the copper acetate ammonia solution of copper compounds precipitates, roasted at 700 ℃, oxidized into copper oxide and sulfuric acid reaction to generate copper sulfate.

4, the use of low-grade copper oxide ore (CuO 3% or so) by crushing to a certain size, adding sulfuric acid impregnation, add copper and iron sinking agent (composed of manganese, vanadium, copper compounds) direct acid leaching to obtain copper-iron ratio of more than 100 of the copper sulfate leach, and then add a chemical concentrator (composed of calcium, sulfur compounds) for chemical concentration, draining away 70% to 90% of the water, a little bit of evaporation, crystallization by cooling, After a little evaporation, cooling and crystallization, centrifugal separation, air-drying, the finished product of copper sulfate is produced.

Specification

Content of copper sulfate(CuSo4.5H2O)≥98.5%.

Cu≥25.2

Fe≤500ppm

As≤10ppm

Pb≤5ppm

Zn≤5ppm

Ni≤80ppm

PH (5% 20℃): 3.5-4.5

Water insoluble matter≤50ppm

The industrial field of use

1、Electroplating industry as the main salt of full bright acid copper plating and copper ion additives.

2, Used as catalyst for synthesizing spices and dye intermediates in organic industry, and as polymerization inhibitor for methyl methacrylate.

3, Anhydrous salt is used to catalyze the transacetal reaction. Anhydrous salt reacts with potassium permanganate to generate an oxidizing agent for the conversion of primary alcohols.

4, Used in the manufacture of other copper salts such as cuprous chloride, copper chloride, copper pyrophosphate, cuprous oxide, copper acetate, copper carbonate, copper monoazo dyes such as reactive blue, reactive violet and so on.

5, printing and dyeing industry as a mordant and fine dyed cloth oxygenating agent, dyes and pigments industry for the manufacture of copper-containing single azo dyes such as reactive blue, reactive violet and so on.

6, Coating industry is used as a fungicide for the production of anti-fouling paint on the bottom of ships.

Copper sulfate manufacturers are mainly concentrated in China, Russia and Japan and other countries, of which China's production is the largest. The price of industrial grade feed grade copper sulfate pentahydrate is closely related to international non-ferrous metal prices, especially copper futures prices. Our company is the first level agent of industry famous industrial grade copper sulfate pentahydrate brand, with guaranteed quality and competitive price.