Carbonate precipitate color7/26/2023 Used in catalysts, pyrotechnic, pesticides, pigments, feed, fungicides, electroplating, anticorrosion and other industries and manufacturing copper compounds Used as analytical reagents and pesticides Used in pyrotechnic, pesticide, pigment, feed, fungicide, anticorrosion and other industries and manufacturing copper compounds When working, you should wear anti-virus masks, protective glasses and dust-proof overalls. ![]() Abdominal pain can be injected with 0.1% atropine sulfate 1 ml subcutaneously Eye irritation can be washed with water. In case of copper poisoning, gastric lavage can be performed with 0.1% K4 solution orally, or oral protein water and magnesium oxide laxative can be taken orally. The maximum allowable concentration of metal copper is 1 mg/m3 and copper oxide is 0.1 mg/m3. ![]() Dust and solution can irritate eyes and mucous membranes. Chronic poisoning is manifested by nervous system dysfunction, liver and kidney dysfunction, nasal septum ulcer and perforation, facial skin, hair and conjunctiva sometimes turn pale yellow-green or light black-green. oral administration of 0.2~0.5g copper salt can cause vomiting, l ~ 2 g can cause severe vomiting, and sometimes fatal poisoning can occur. when drinking water containing 44 mg/L copper, acute gastroenteritis occurs. In the harmful effects of excess copper, the hydrogen-sulfur reaction of Cu2 + with enzyme plays a decisive role. It is insoluble in water, soluble in ammonia and hot and concentrated sodium bicarbonate solution to become blue, and decomposes at 300☌.īasic copper carbonate can be used to make flares, fireworks, paint pigments, other copper salts, solid phosphor activators, pesticides, seed treatment and as fungicides and antidotes, and also used in electroplating.ĭissolved grams per 100ml of water: 1.462 × 10-4/20 ℃ Cu(OH)2, dark sky blue, very bright monoclinic crystals, or compact crystalline clusters.The chemical formula of the latter is 2 CuCO3 It is toxic and is the main component of the green rust (commonly known as patina) generated on the surface of copper. The precipitate obtained from the solution initially appears green, and becomes dark green in the solution after being placed. Cu(OH)2, which is a grass-green monoclinic crystalline fibrous mass, or dark green powder.In fact, there are two types of copper hydroxide, one copper carbonate and two copper carbonate. Basic copper carbonate can be regarded as composed of copper hydroxide and copper carbonate. Adding sodium carbonate to dilute copper sulfate solution or passing carbon dioxide into copper hydroxide suspension can obtain basic copper carbonate precipitate. It exists in nature in the form of blue copper ore.Ĭopper carbonate and copper bicarbonate actually do not exist. If it is placed in the air for a long time, it will absorb moisture and release carbon dioxide, which will slowly become a green malachite composition. It exists in the form of malachite in nature. Basic copper carbonate has more than a dozen forms of compounds according to the ratio of CuCO3:H2O. ![]() It is unstable in a hydrogen sulfide atmosphere and can react with hydrogen sulfide to form copper sulfide. When boiled in water or heated in a strong alkali solution, brown copper oxide can be generated, which is decomposed into black copper oxide at 200☌. It is also soluble in cyanide, ammonium salt and alkali metal carbonate aqueous solution to form copper complexes. Soluble in acid and form the corresponding copper salt. Heating in air will decompose into copper oxide, water and carbon dioxide. It is also called copper rust and is green in color. It is a substance produced by the reaction of copper with oxygen, carbon dioxide and water in the air. Information provided by: (external link)īasic copper carbonate, also known as copper carbonate, is malachite green, so it is also called malachite, which is a precious mineral gem.
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