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  • Pyrogallol or benzene-1,2,3-triol is a benzenetriol. It is a white crystalline powder and a powerful reducing agent.
  • It was first prepared by Scheele 1786 by heating gallic acid. An alternate preparation is heating para-chlorophenol disulphonic acid with potassium hydroxide.
  • When in alkaline solution, it absorbs oxygen from the air, turning purple from a colourless solution.
  • It can be used in this way to calculate the amount of oxygen in air, notably via the use of the Orsat apparatus.
  • One can find its uses in hair dying, dying of suturing materials and for oxygen absorption in gas analysis.
  • It also has antiseptic properties. Pyrogallol was also used as a developing agent in black-and-white developers, but its use is largely historical except for special purpose applications.
  • Hydroquinone is more commonly used today.Though a popular photographic developing agent in the 19th and early 20th centuries, pyrogallol largely fell out of favor around the 1920s, though still used by a few notable photographers including Edward Weston.
  • Pyrogallol was tested in two independent bacterial mutation studies; both studies gave positive results in one or more strains of S. typhimurium or E. coli.
  • The current main commercial application of pyrogallol is the production of pharmaceuticals and pesticides.
  • In analytical chemistry, pyrogallol is used as a complexing agent, reducing agent, and, in alkaline solution, as an indicator of gaseous oxygen.
  • Pyrogallol was nominated for testing by private individuals based on its frequent occurrence in natural and manufactured products, including hair dyes, and the apparent lack of carcinogenicity data.
  • Pyrogallol
  • General information
  • Protein Pyrogallol
  • An Introduction to Pyro Staining Developers,
    With Special Attention to the Pyrocat-HD Formula


  • A.R.Grade
  • Peroxidase
  • Pyrogallol
  • Pyrogallol red
  • Pyrogallol SC


  • Pyrogallol
  • Pyrogallol MSDS
  • Pyrogallol JMS
  • Pyrogallol Sunivo
  • Pyrogallol Sigma
  • Pyrogallol  DS
  • Santa MSDS
  • Pyrogallol red
  • Pyrogallol  Carolina


  • Note on Anaerobiosis and the use of alkaline solutions of Pyrogallol
  • Review of Toxicological literature
  • Partially purification and characterization of polyphenol oxidase of Quince
  • Oxidation of pyrogallol to purpurogallin by crystalline catalase
  • Evaluation of immunomodulatory activity of petroleum ether extract of seeds
  • Toxicology and carcinogenesis studies of Pyrogallol
  • Characterization of the pyrogallol-phloroglucinol isomerase of Eubacterium oxidoreducens


  • Vibrational spectroscopic calculations on pyrogallol and gallic acid
  • An Improved Pyrogallol Red-Molybdate Method for Determining Total Urinary Protein
  • GC/MS Determination of Pyrogallol and Gallic Acid in Biological Matrices as Diagnostic Indicators of Oak Exposure
  • Evaluation of Antioxidant properties of Berries
  • Determination of Bioactive components of Ethyl Acetate fraction
  • Assay of superoxide dismutase activity in animal tissues

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  • Synthesis of Gallic Acid and Pyrogallol from Glucose: Replacing Natural Product Isolation with Microbial Catalysis
  • Towards the reaction mechanism of pyrogallol phloroglucinol transhydroxylase of Pelobacter acidigallici
  • Synthesis, Crystal structure, and spectroscopic investigation of C-Cyanophenyl pyrogallol [4] arene


  • Reducible indicator compositions containing pyrogallol derivatives
  • Process for producing pyrogallol and derivatives thereof
  • 2,2-bis(3,5-disubstituted-4-hydroxyphenyl) propane derivative, process for production thereof, and process for producing pyrogallol using said derivative
  • Polyacetylene with pyrogallol or hydrosulfite system
  • Catechol or pyrogallol containing flexible insulating tape having low gel time
  • Pyrogallol synthesis of anti-atherogenic furochromones
  • Scale preventive coating of pyrogallol-acetone resin and water soluble polymer
  • 2,2,6,6-Tetrachloro (or bromo) cyclohexane and pyrogallol
  • Chemically active ceramic compositions with a pyrogallol moiety
  • Method of removing heavy metal ions from a liquid with chemically active ceramic compositions with a pyrogallol moiety
  • Process for preparing pyrogallol

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