Find 2 4 6-Tribromophenol CAS 118-79-6, CAS NO 118-79-6, Others Name Of BROMOL on Industry Directory, Reliable Manufacturer/Supplier/Factory from China.
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Model No.: CAS NO 118-79-6
Free sample 2 4 6-Tribromophenol CAS 118-79-6
Tribromophenol (2,4,6-Tribromophenol; Abbreviation: TBP) is an aromatic compound. White acicular or prismatic crystals with a pungent odor.
production method
1. Add phenol to the reaction kettle, stir and add water and heat up to 60°C. Add bromine dropwise. Continue stirring for 30 minutes after the addition is complete. Then it was cooled to 40°C and filtered. The cake was washed with water until neutral to obtain crude product. The crude product was dissolved in ethanol at 70° C., activated carbon was added for decoloration, and after filtering, an equal amount of water was mixed with the filtrate, ie, needle-like crystals were precipitated as a finished product. The yield is about 96%.
2. The following three routes are used to produce tribromophenol.
(1) Direct bromination method (phenol-bromine water oxidation method) At present, domestic use of the traditional process --- using the bromine water oxidation and substitution of the dual characteristics, and phenol reaction, generate white tribromophenol precipitation. The process is as follows. 1 Preparation Dissolve phenol in water and slowly add the equivalent of bromine water (KBr as cosolvent) under stirring. Control the temperature at 60 °C. Add dropwise, reaction for 30 min, cool to 40 °C, filter. The solution was washed with dilute aqueous sodium bisulfite, washed with water until neutral, and dried to give crude 2,4,6-tribromophenol. 2 Refinement The above crude crystals are dissolved in hot anhydrous ethanol, decolorized by adding activated carbon, filtered, and then the same amount of water is mixed with the filtrate, ie, needle-like crystal products are precipitated, and the yield is 96%. 3 Hydrogen bromide recovery 0.2 mol of benzene was dissolved in water and 0.3 mol of bromine water was added dropwise with vigorous stirring. After the addition was completed, 0.3 mol of chlorine gas was slowly fed. After the reaction was complete, the mixture was filtered and washed with dilute aqueous sodium bisulfite solution. And then washed with water to neutral, dried product. ...
use
It is used as reactive flame retardant and is suitable for adhesives and sealants such as epoxy Resin, polyurethane, polycarbon grease, and phenolic resin. It can also be used as a fungicide.
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1> Cosmetic Raw Materials: Cosmetics is a variety of raw materials through a reasonable deployment of processing from the compound mixture. Cosmetics with a wide range of raw materials, different performance. According to the raw material properties and uses of cosmetics, can be divided into matrix materials and auxiliary raw materials in two categories. The former is a class of cosmetics in the main raw materials, cosmetics in the possession of a large proportion of the cosmetics play a major role in the role of the material. The latter is the formation of cosmetics, stability or to give color, smell and Other characteristics of the role of these substances in the cosmetic formula is not used, but it is extremely important. Cosmetics are natural, synthetic or extracted from the role of different substances as raw materials, by heating, mixing and emulsification and other production processes processed from the chemical mixture.
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