GB139419A - A process for the preparation of gallic acid - Google Patents

A process for the preparation of gallic acid

Info

Publication number
GB139419A
GB139419A GB2128019A GB2128019A GB139419A GB 139419 A GB139419 A GB 139419A GB 2128019 A GB2128019 A GB 2128019A GB 2128019 A GB2128019 A GB 2128019A GB 139419 A GB139419 A GB 139419A
Authority
GB
United Kingdom
Prior art keywords
acid
metallic
gallic acid
preparation
tannin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2128019A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nitritfabrik AG
Original Assignee
Nitritfabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nitritfabrik AG filed Critical Nitritfabrik AG
Priority to GB2128019A priority Critical patent/GB139419A/en
Publication of GB139419A publication Critical patent/GB139419A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C65/00—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
    • C07C65/01—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups
    • C07C65/03—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups monocyclic and having all hydroxy or O-metal groups bound to the ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Gallic acid is obtained by heating tannin with an amount of a metallic salt compound sufficient to effect a substitution of the hydrogen atoms of the carboxyl and hydroxyl groups formed on hydrolysis, and then decomposing the resulting gallate with an acid. An excess of the metallic compound is preferably employed, in order to coagulate the albuminous material. The metallic compounds referred to are the hydroxide, oxides, and weak-acid salts (e.g. carbonates and acetates) of the alkali and alkaline earth metals, magnesium, aluminium, lead, copper, and zinc.
GB2128019A 1919-08-29 1919-08-29 A process for the preparation of gallic acid Expired GB139419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2128019A GB139419A (en) 1919-08-29 1919-08-29 A process for the preparation of gallic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2128019A GB139419A (en) 1919-08-29 1919-08-29 A process for the preparation of gallic acid

Publications (1)

Publication Number Publication Date
GB139419A true GB139419A (en) 1920-03-04

Family

ID=10160216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2128019A Expired GB139419A (en) 1919-08-29 1919-08-29 A process for the preparation of gallic acid

Country Status (1)

Country Link
GB (1) GB139419A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723992A (en) * 1952-04-19 1955-11-15 Mallinckrodt Chemical Works Preparation of gallic acid from tannincontaining materials
CN110922327A (en) * 2019-12-09 2020-03-27 邱洪 Gallic acid acidizing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723992A (en) * 1952-04-19 1955-11-15 Mallinckrodt Chemical Works Preparation of gallic acid from tannincontaining materials
CN110922327A (en) * 2019-12-09 2020-03-27 邱洪 Gallic acid acidizing device

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