Pyrocatechol
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• Catechol, also known as pyrocatechol or 1,2-dihydroxybenzene, is an organic compound with the molecular formula C6H4(OH)2.
• It is the ortho isomer of the three isomeric benzenediols.
• This colorless compound occurs naturally in trace amounts. About 20 million kg are produced annually, mainly as a precursor to pesticides, flavors, and fragrances.
• Catechol occurs as feathery white crystals that are very rapidly soluble in water.
• Catechol is produced industrially by the hydroxylation of phenol using hydrogen peroxide.
• Previously, catechol has been produced by hydrolysis of 2-substituted phenols, especially 2-chlorophenol, with hot aqueous solutions containing alkali metal hydroxides.
• Its methyl ether derivative, guaiacol, converts to catechol via hydrolysis of
  the CH3-O bond as promoted by hydriodic acid.
• Catechol is the conjugate acid of a chelating agent used widely in coordination
  chemistry.
• Small amounts of catechol occur naturally in fruits and vegetables, along with the
  enzyme polyphenol oxidase (also known as catecholase, or catechol oxidase).
• Upon mixing the enzyme with the substrate and exposure to oxygen (as when a potato or
  apple is cut and left out), the colorless catechol oxidizes to reddish-brown melanoid pigments, derivatives of benzoquinone.
• Catechol is used as a black-and-white photographic developer.
• Pyrocatechol is a natural occuring plant poly phenol that is used as an ingredient for the production of insecticides, perfumes and drugs.
•  It is further most used in dyestuffs, electroplating, antioxidants and light stabilizers and in organic synthesis.
• It is also prepared by treating salicyladehyde with hydrogen peroxide or from its monomethyl ether(guaiacol) by treatment with hydrobromic acid.
• It is one of the central intermediates in aerobic aromatic metabolism.
• Process for the oxidation of phenol to a mixture of hydroquinone and catechol using hydrogen peroxide as oxidant in the presence of titanium silicate molecules in a multistage fixed bed reactor.
• As phenolic antioxidants, it has been extensively used in chemical, food and pharmaceutical industry.
• The extraction efficiency in the presence of magnesium salts in comparison to the extraction efficiencies from the salt-free aqueous solutions increased from 14% in the case of catechol extraction with diethylether.

• Pyrocatechol.
• General Information.
• Executive Summary.
• Properties.
• Overview.
• Fact Sheet.
• Substance Profile.
• Catalogue & derivatives.

MSDS

• MSDS of pyrocatechol.
• Catechol MSDS.
• Pyrocatechol Safety Sheet.
• Safety Sheet of Catechol.
• 1,2 Benzenediol MSDS.
• Material Sheet of pyrocatechol.
• Pyrocatechol Violet MSDS.
• Pyrocatechin Material Data Sheet.
• Data sheet of catechol.
• MSDS of 1,2 Benezenediol.
• Catechol Data Sheet.
• 1,2dihydroxybenzene MSDS
• Material Safety Sheet of pyrocatechol.
• Safety Sheet of Catechol.
• MSDS of Catechol.

Products

• Pyrocatechol Violet.
• Guaiacol.
• Molybdate Analyzer.

Toxicity

• Health guideline for Catechol.
• Risk Management Approach for 1,2 Benzenediol.
• Safety Summary.
• Toxicity of  Catechol.

Process

• Metalation of Catechol-functionalized porous organic polymers.
• Production of Catechol.

Patent

• Synthesizing acetonide-protected catechol-containing compounds.
• Assay for Dibromonitrilo propionamide.
• Pyrocatechol-amine water solution for determination of defects.
• Catechol Derivatives.
• Hydroxylation of aromatic compounds.
• Indazole bioisostere replacement of catechol in terapeutically active compounds.
• Method for preparing catechol.
• 3,6-di-butyl-2-naphthyl catechol phosphite and Compositions.
• Method for preparing purified pyrocatechol.
• Water Aided catechol etherification.
• Process for selective monoetherification of pyrocatechol.
• Process for the conversion of phenol to hydroquinone and catechol.

• List of  Suppliers.
• China Suppliers.
• Suppliers from UK.
• Hongkong Suppliers.
• Exporters of Catechol.
• Online Suppliers.
• Suppliers from Germany.
• Indian Suppliers.
• Suppliers from USA.

Raw material suppliers

• 2-Chlorophenol.
• Hydrogen Peroxide.
• Phenol.

Company profiles & Consultants

• Company1 Profile from china.
• Company2 profile from China.
• Company from Hongkong.
• Company from Gujarat.
• Company from USA.
• Company1 profile from India.
• Company2 profile from India.
• Consultancy from India.

Report

• Oxidation of Catechol in plants.
• Chemical Properties of Catechols and their molecular modes of toxic action in cells.
• Catechol concentrations in the hemolymph.
• Control of catechol and hydroquinone electron-transfer kinetics.
• Stable degradation of catechol.

Study

• Adsorption of catechol.
• Catechol in gas and aqueous solution phase.
• Intramolecular hydrogen bond in substituted catechols.
• Cyclic Volatammetric study of Catechols.
• Direct spectrophotometric assay of monooxygenase.
• Effects of Catechol on human erythrocyte membrane.
• Electrochemical oxidation of  Catechol.
• Thermal decomposition of catechol.
• Oxidation of Phenol.
• Degradation of two high strength phenols in aqueous solution.
• Catechol-o-methyl transferase.
• Mechanism of redox reaction of pyrocatechol violet.
• Oxidation of Catechols.
• Pyrocatechol violet immobilized amberlite.
• Salting-out extraction of catechol.
• Synthesis of offretite single crystals in the system containing pyrocatechol.

 Uses

• Use of a pulsed high-voltage discharge for removal of organic compounds.
• Purification of mulberry polyphenol oxidase.
• Derivatives in pharmaceuticals using spectrophotometry.
• Bio-degradation of catechol by micro-organisms.
• Catechol O-methyltransferase.

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