Copper sulfate pentahydrate (chemical formula :CuSO4·5H2O) is also known as copper sulfate crystal, in order to distinguish from "anhydrous copper sulfate", usually read as "copper sulfate pentahydrate", the relative molecular mass of 250. Commonly known as blue alum, gall alum or copper alum. With vomiting, removal of rot, detoxification; The effect of treating wind phlegm choking, throat arthralgia, epilepsy, chancre, oral sore, wind eye, hemorrhoids, swollen poison and have certain side effects.
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Copper sulfate crystal
Copper sulfate pentahydrate
Bluestone is a natural aqueous copper sulfate, is five water copper sulfate (CuSO4 · 5 H2O) commonly known as, in order to "anhydrous cupric sulfate" distinction, usually read "five copper sulfate hydrate, relative molecular mass of 250, is a kind of widespread sulfate minerals. It is a secondary mineral formed after copper sulfide is decomposed by oxygen.
Cholerite occurs in the oxidation zone of copper deposits and is also often found on the inner wall of mine workings and pillars, which is formed by the crystallization of water in the mine.
The crystals of cholerite form plates or short columns, and these crystals are granular, blocky, fibrous, stalactite, crust-like, etc. They have a beautiful blue color, but if exposed to dry air will turn into an opaque pale greenish-white powder due to the loss of water. It is also highly soluble in water.
Bile alum is a chemical raw material used in pigment, battery, insecticide, wood preservation and so on.
Derived from natural or artificial aqueous copper sulfate crystals. Irregular lumpy crystals, varying in size, dark blue or light blue, translucent. Exposed to dry air, slowly weathered. When it is heated, it loses the crystal water and becomes white, and when it meets water, it turns blue. Brittle, brittle, soluble in water. Odorless, bitter, astringent taste. Taste sour, hot, cold. Toxic. The function is to dispel wind phlegm, eliminate stagnation, dry moisture and kill insects. For wind heat sputum saliva choking, epilepsy; Topical treatment of oral ulcer, wind eye red rot, sore sore swollen poison. Usage and dosage 1~2 minutes, more into pills, powder. Appropriate amount for external use, powder or soak the affected area. Extract "National Chinese herbal medicine compilation" nature
Copper sulfate pentahydrate is very stable at room temperature and atmospheric pressure, does not deliquate, will gradually weathering in dry air, heating to 45 ° C to lose two molecular crystal water, 110 ° C to lose four molecular crystal water, called copper sulfate monohydrate [1], 200 ° C to lose all crystal water into anhydrous matter. Five crystalline waters can also be lost under the action of concentrated sulfuric acid. Anhydrous matter also easily absorbs water and transforms into hydrated copper sulfate. The reaction after water absorption produces copper sulfate pentahydrate (blue), which is often used to test whether some liquid organic matter contains trace water (such as the identification of alcohol water, adding a little anhydrous copper sulfate in the alcohol to be identified, such as the white anhydrous copper sulfate turns blue, indicating that the alcohol is mixed with water). Pay attention to distinguish between the two.
When anhydrous copper sulfate is heated to 650 ° C, it can be decomposed into black copper oxide, sulfur dioxide and oxygen (or sulfur trioxide).
Chalcosite is a natural hydrous copper sulfate, which is widely distributed as a sulfate mineral. It is a secondary mineral formed after copper sulfide is decomposed by oxygen.
Anhydrous copper sulfate can be tested for the presence of water in other substances.
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