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Fire hazard of calcium hypochlorite

2010-07-10View Original

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The last edit to this post was made by sunjl1981 on 2013-1-6 at 23:52. I would like to ask everyone: Page 132 of GB50016-2006 (item 5 under the explanation of clause 3.1.1) states that facilities for calcium hypochlorite production belong to Class A production facilities; Meanwhile, page 139 (sub-item 2 of the interpretation of Article 3.1.2) states that bleaching powder belongs to Category B items. There is a contradiction; how to explain it? 2 Search for the MSDS of calcium hypochlorite; “Calcium hypochlorite, also known as bleaching powder, can cause combustion** when in contact with water or humid air.” ”Can it be determined that calcium hypochlorite falls under Category A, Item 4 of GB50016 (provided that no flammable gases are generated)? What is the mechanism by which sodium hypochlorite causes combustion when it comes into contact with water or humid air? Are the electrical instruments in its workshop designed to be explosion-proof? Thank you and look forward to everyone's answers. , , -
Reply #22010-07-11
Calcium hypochlorite is also known as lime chloride or bleaching powder. A white powder with a very strong chlorine odor. Its solution is a yellow-green translucent liquid. Melting point: 100°C (decomposition); soluble in water; relative density (water=1): 2.35; relative density (air=1): 6.9. It is a strong oxidizer; when mixed with organic substances or flammable liquids, it can generate heat and catch fire on its own, and it will undergo ** when exposed to high temperatures. When exposed to air, it readily absorbs moisture and carbon dioxide, thereby decomposing to release hypochlorous acid and chlorine gas. Hypochlorous acid then decomposes to form hydrogen chloride and oxygen. “When “calcium hypochlorite” comes into contact with water, it undergoes a chemical reaction that generates a large amount of heat, resulting in an **” sound, as well as the production of large quantities of toxic gases. Calcium hypochlorite has low solubility in water. Its stability is inversely proportional to its water content; the decomposition reaction is highly exothermic, with calcium chlorate and dichlorine monoxide as the products.
Reply #32014-05-21
I am here to study. Does anyone have any information on calcium hypochlorite that they could send to me? Thank you

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