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Pyrogallol was also used as a developing agent in the 19th and early 20th centuries in black-and-white developers. Hydroquinone is more commonly used today. Its use is largely historical except for special purpose applications. It was still used by a few notable photographers including Edward Weston. In those days it had a reputation for ...
1,2,3,5-Tetrahydroxybenzene, also known as pyrogallol, has various uses. It is used in the production of certain dyes, photographic developers, and hair dyes. Additionally, pyrogallol has been employed in traditional medicine and some cosmetic formulations due to its antioxidant properties.
The enzyme pyrogallol hydroxytransferase uses 1,2,3,5 ... Health effects . In some countries ... In some countries and in veterinary medicine, phloroglucinol is used ...
A hydrolysable tannin or pyrogallol-type tannin is a type of tannin that, on heating with hydrochloric or sulfuric acids, yields gallic or ellagic acids. [ 1 ] At the center of a hydrolysable tannin molecule , there is a carbohydrate (usually D-glucose but also cyclitols like quinic or shikimic acids ).
However, as the FDA noted, "Manufacturers can voluntarily use the claim on a food package if the product meets the updated criteria." So, if the food product meets the guidelines, companies can ...
The enzyme pyrogallol hydroxytransferase uses benzene-1,2,3,5-tetrol and benzene-1,2,3-triol (pyrogallol), whereas its two products are benzene-1,3,5-triol ...
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By reacting the bromopyrogallol red with niobium(V) in a tartrate medium at pH 6.0, an intense blue coloured 3:1 reagent was formed. The sensitivity and conditional selectivity of bromopyrogallol red was also studied and results show that trace amounts of silver can be detected from the formation of a ternary complex between 1,10-phenanthroline, bromopyrogallol red and silver ion.