4-Chlorophenol powder Raw Materials CAS 106-48-9

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Uses and synthesis of 4-Chlorophenol powder

4-Chlorophenol powder is a white crystalline (yellow to pink when impure) substance with an unpleasant odor. It is soluble in water, ethanol, benzene and ether. It can be volatilized with water vapor, and has strong irritation.4-Chlorophenol CAS 106-48-9 Maximum permissible concentration in the air of the workshop is 1 mg/m3.Oral LD50 of rats is 261 mg/kg.

The oral LD50 for rats is 261 mg/kg.

• 4-Chlorophenol CAS 106-48-9 is mainly used in pesticides, pharmaceuticals, dyestuffs, plastics and other industries, also used as ethanol color change agent, selective solvent for refining mineral oil, microanalysis.
• 4-Chlorophenol Raw Materials is an important raw material for the production of certain resins, fungicides, antiseptics and drugs (such as aspirin). It is also used to sterilize surgical instruments and excreta disposal, as well as for skin antiseptic, antipruritic and otitis media.

Applications / Functions of 4-Chlorophenol CAS 106-48-9

1. 4-Chlorophenol Raw Materials is used in synthetic dyes neutral bright green BL, pharmaceuticals and pesticides, etc. It can also be used as a solvent for refining mineral oil.
2. It can also be used as solvent for refined mineral oil, microscope analysis, pharmaceutical and dye intermediates, alcohol denaturant, solvent.
3. 4-Chlorophenol Raw Materials is used for microscopic analysis; used in synthetic dyes neutral bright green BL, pharmaceuticals and pesticides, etc., 4-Chlorophenol CAS 106-48-9 can also be used as a solvent for the refining of mineral oils; used in pesticides, pharmaceuticals, dyes, plastics, etc., but also used as ethanol denaturant, selective refining of mineral oils Solvent, microscopic analysis, etc.
4. Microscopic analysis, pharmaceutical and dye intermediates, alcohol denaturant, solvent.4-Chlorophenol CAS 106-48-9 is mainly used in pesticides; pharmaceuticals; dyestuffs; plastics and other industries, also used as ethanol discoloration agent; refining mineral oil selective solvent; microscopic analysis, etc.; Agricultural industry 4-Chlorophenol CAS 106-48-9 is mainly used in the synthesis of 4-Chlorophenol CAS 106-48-9 is mainly used in the synthesis of pesticides, such as pesticides, insecticides, insecticides, and so on.
5. 4-Chlorophenol Raw Materials is used in the manufacture of pesticide fungicide 5,5'dichloro-2,2'dihydroxydiphenylmethane and plant growth promoter; dyestuff industry is used in the production of 1,4-dihydroxyanthraquinone, 1,4-diaminoanthraquinone, p-aminophenol and hydroquinone; pharmaceutical industry is used in the carboxylation of 5-chloro-2-hydroxybenzoic acid sodium salt, the synthesis of p-chlorophenoxyisobutyric acid, and other drugs. 4-Chlorophenol CAS 106-48-9 is also used in the synthesis of antioxidant BHA (butyl hydroxyanisole) and so on.

Physicochemical Property of 4-Chlorophenol powder

4-Chlorophenol CAS 106-48-9 is white crystal (yellow or pink crystal in industry). It has unpleasant irritating odor. Almost insoluble in water, soluble in benzene, ethanol, ether, glycerol, chloroform, fixed oil and volatile oil.

production methodprocess of 4-Chlorophenol powder

This product has many kinds of production methods, mainly as follows:

1. Phenol direct chlorination method takes phenol as raw material, according to the different chlorinating agents and solvents used, it is divided into the following three methods:

• (1) sulfuryl chloride method will be heated to melt phenol, reduce the temperature to 40 ℃, slowly add sulfuryl chloride, about 40-45min to add the end, then stirring for 4h, warming to 30-40 ℃ insulation for 4h, 40-45 ℃ insulation for 4h, the reaction tail gas absorbed with alkali, the reaction after the cold to room temperature, washed with water, 10% sodium carbonate solution, water, in order to distill under reduced pressure, collect 110-115 ℃ ( 2.67kPa) fractions to p-chlorophenol. The method of p-chlorophenol yield is high, up to 70%-75%. At the same time, 25-30% of by-product o-chlorophenol is generated. Each ton of p-chlorophenol consumes about 1000kg of phenol and about 2000kg of sulfuryl chloride.
• (2) Benzene solvent method uses benzene as solvent and chlorine as chlorinating agent, and 4-Chlorophenol CAS 106-48-9 is produced by direct chlorination of phenol.
• (3) Solvent-free chlorination method uses iron, bromine, etc. as catalyst, and chlorine gas is passed into the molten phenol to produce monochlorophenol by direct chlorination. The reaction solution was washed and then subjected to decompression distillation to collect the p-chlorophenol content ≥95% fraction. The yield of phenol (neighbor/para combined) is ≥95%, the yield of chlorine is 95%, the ratio of para/neighbor is 3-4, and the product content is ≥98%. Raw material consumption: phenol 0.77t/t, chlorine 0.58t/t, by-product HCl 0.28t/t.

2. 4-Chlorophenol powder is produced by hydrolysis of p-chlorobenzene with p-dichlorobenzene as raw material and water or alcohol or benzene as solvent.

3. Chlorination of sodium phenol to obtain o-, p-chlorophenol and 2,4-dichlorophenol mixed chlorinated liquid. Decompression fractional distillation, collect 85-132 ℃ (2.0kPa) high boiling point fraction, will be cold to below 10 ℃, then precipitated p-chlorophenol, separation that is 4-Chlorophenol powder. yield is about 25%.

4. 4-Chlorophenol Raw Materials was obtained from p-chlorophenol by diazotization and replacement with cuprous chloride.5. 4-Chlorophenol Raw Materials was obtained from p-chloroaniline by diazotization, hydrolysis and elimination.

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