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Trichloroisocyanuric acid
[Alias] Strong Chlorine, TCCA for short
[Structural formula]
[Physical and chemical properties] The pure product is a white powder crystal with a pungent odor of hypochlorous acid .
[Preparation method] There are four main synthetic methods for trichloroisocyanuric acid: sodium cyanurate chloride method (also known as sodium salt method or chlorine method), sodium hypochlorite method, chlorine solvent method and compound method
(1) Chlorination method with sodium cyanurate salt
①The production of cyanuric acid (CA) synthetic cyanuric acid mainly adopts the urea pyrolysis deamination method, and the reaction formula is:
According to different thermal cracking methods, it is divided into solid phase method and liquid phase method
According to the different chlorination methods, it can be divided into Monsanto method, FMC method and BASF method.
④Example Weigh 384g of cyanuric acid and 360g of 98% sodium hydroxide into a reactor filled with 400mL of 12.
(2) Chlorine-solvent method
Weigh 20g of cyanuric acid, 78g of sodium bicarbonate and 400g of acetone to make a suspension, pass in chlorine gas for chlorination at 0℃, and pass a total of 40g of chlorine gas.
(3) Sodium hypochlorite method
Cyanuric acid is formulated into a slurry, and chlorinated at a certain pH value with a pre-prepared chlorinating agent (such as Cl 2 O, HCIO, NaClO, etc.
Mix cyanuric acid and water into an 18.
The overflowing reaction liquid is filtered, washed, and dried to obtain a product
(4) Compound method
Dissolve 19.