20923-36-8

Upstream product

• 25108-10-5 2,3,4,6,6-pentachloro-2,4-cyclohexadienone 
• 58-90-2 2,3,4,6-tetrachlorophenol 
• 7647-01-0 hydrogenchloride 
• 7782-50-5 chlorine 
• 64-19-7 acetic acid 
• 108-42-9 3-chloro-aniline 
• 108-95-2 phenol 

Downstream Products

• 599-52-0 2,3,4,4,5,6-hexachlorocyclohexa-2,5-dien-1-one 
• 87-86-5 Pentachlorophenol 
• 58-90-2 2,3,4,6-tetrachlorophenol 

Relevant academic research and scientific papers

Stabilization of mixtures of chlorination of phenol/chlorophenols

Mixtures produced by chlorination of phenol/chlorophenols are effectively stabilized by stirring same in the presence of a stabilizing amount of at least one strong protonic acid and/or a Lewis acid.

CHLORINATION OF 2,4,6-TRICHLOROPHENOL IN ACIDIC AQUEOUS MEDIUM

The course of chlorination of 2,4,6-trichlorophenol (I) in water and approximately 20percent sulfuric and hydrochloric acids has been investigated.In all these media the reaction gives primarily 2,4,6,6-tetrachloro-2,4-cyclohexadienone (II) which is subsequently chlorinated under formation of polychlorinated alicyclic ketones or isomerized to give the more stable 2,4,4,6-tetrachloro-2,5-cyclohexadienone (III), the precursor of further arising chlorinated 1,4-benzoquinones.The ratio of the arising polychlorinated alicyclic ketones to chlorinated 1,4-benzoquinones is significantly influenced by concentration of hydrogen chloride in the reaction medium.On the basis of model experiments, the reaction mechanism of exhaustive chlorination of 2,4,6-trichlorophenol has been suggested.