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pyrogallic

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1
pyrogallic
pyrogallic, a. Chem. (ˌpaɪərəʊˈgælɪk) [f. pyro- 3 + gallic a.2] Produced from gallic acid by the action of heat: in pyrogallic acid, an acid substance, C6H6O3 (strictly a trihydric phenol, C6H3(OH)3, hence systematically named pyrogallol), which crystallizes in long flat colourless prisms, soluble i... Oxford English Dictionary
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Myriophyllum spicatum
Chemistry Myriophyllum spicatum produces ellagic, gallic and pyrogallic acids and (+)-catechin, allelopathic polyphenols inhibiting the growth of blue-green wikipedia.org
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purpurogallin
purpurogallin Chem. (ˌpɜːpjʊərəʊˈgælɪn) [ad. F. purpurogalline (A. Girard 1869, in Compt. Rend. LXIX. 866), f. purpurine purpurin with inserted -o and -gall (f. pyrogallique pyrogallic a.): named after the unrelated purpurin by analogy with the preparation of that substance by oxidation of alizarin.... Oxford English Dictionary
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Microcystis aeruginosa
The aquatic plant Myriophyllum spicatum produces ellagic, gallic, and pyrogallic acids and (+)-catechin, allelopathic polyphenols inhibiting the growth wikipedia.org
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pyro
pyro Photogr. (ˈpaɪərəʊ) Abbreviation of pyrogallic acid or pyrogallol, extensively used as a developing agent. Often attrib. and in Comb., as in pyro-developer, pyro-solution, etc.1879 Cassell's Techn. Educ. III. 294 The proper developing agent for collodio-bromide plates is..known as the alkaline ... Oxford English Dictionary
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Quercitannic acid
It differs however from the latter in not being convertible into gallic acid, and not yielding pyrogallic acid by dry distillation. wikipedia.org
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trihydric
▪ I. trihydric, a.1 Chem. (traɪˈhaɪdrɪk) [f. tri- 5 + Gr. ὕδωρ water + -ic.] Containing three hydroxyl groups, OH; thus glycerin or glycerol, C3H5(OH)3, is a trihydric alcohol; pyrogallic acid or pyrogallol, C6H3(OH)3, is a trihydric phenol.1866 Frankland Lect. Notes 269 Relations of Glycerin to the... Oxford English Dictionary
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Henri Braconnot
Among others, Braconnot discovered gallic and ellagic acids (1818) and pyrogallic acid (pyrogallol) which later enabled the development of photography. wikipedia.org
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meth-
meth- (mɛθ) used as comb. form of methyl before a vowel in a few chemical names, as ˈmethacrylic acid, 1-methylacrylic acid, CH2:C(CH3)COOH, a colourless compound melting at 15°C, which polymerizes when distilled and which is used in the manufacture of methacrylate resins; so meˈthacrylate, (a) a sa... Oxford English Dictionary
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pyrogallic acid ointment in Chinese - ichacha.net
What is the meaning of pyrogallic acid ointment in Chinese and how to say pyrogallic acid ointment in Chinese? pyrogallic acid ointment Chinese meaning, pyrogallic acid ointment的中文，pyrogallic acid ointment的中文，pyrogallic acid ointment的中文，translation, pronunciation, synonyms and example sentences are provided by ichacha.net.
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Collodion-albumen process
These decompose and leave silver that is oxidized by the developer (Pyrogallic Developing Solution). wikipedia.org
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Talbot v Laroche
claimed that his patent covered "the making visible photographic images upon paper ... by washing them with liquid" and argued that Laroche's use of pyrogallic The technique used by Laroche differed in that: It used pyrogallic, rather than gallic, acid; and It used collodion rather than paper. wikipedia.org
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Oxygen scavenger
Mechanism The first patent for an oxygen scavenger used an alkaline solution of pyrogallic acid in an air-tight vessel. wikipedia.org
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Henri Victor Regnault
He introduced the use of pyrogallic acid as a developing agent, and was one of the first photographers to use paper negatives. wikipedia.org
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Leon Warnerke
Inventor Roll film Warnerke is credited in 1875 with discovering the tanning effect of pyrogallic acid when used in the development of collodion, and wikipedia.org
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