GB986867A - Method of preparing salicylic acid - Google Patents

Method of preparing salicylic acid

Info

Publication number
GB986867A
GB986867A GB3440662A GB3440662A GB986867A GB 986867 A GB986867 A GB 986867A GB 3440662 A GB3440662 A GB 3440662A GB 3440662 A GB3440662 A GB 3440662A GB 986867 A GB986867 A GB 986867A
Authority
GB
United Kingdom
Prior art keywords
salicylate
strong inorganic
reaction
inorganic acid
acid
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
GB3440662A
Inventor
John Neil Periard
George W Waldron
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB3440662A priority Critical patent/GB986867A/en
Publication of GB986867A publication Critical patent/GB986867A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/02—Preparation of carboxylic acids or their salts, halides or anhydrides from salts of carboxylic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Salicyclic acid is prepared by reacting a water-soluble salicylate and a strong inorganic acid by a process comprising continuously feeding the water-soluble salicylate and the strong inorganic acid into a reaction zone, vigorously agitating the reaction mixture during the course of the reaction, maintaining the reaction temperature between 50 DEG and 80 DEG C. and maintaining the pH of the reaction mixture between 1.8 and 2.5. The salicylate, e.g. an alkali metal salicylate, particularly sodium salicylate, is preferably employed in the form of an aqueous solution having a concentration of between 50 and 150 gms. of salicylate per litre of solution. When sulphuric acid is used as the strong inorganic acid it is used as an aqueous solution having a concentration of between 20 DEG and 60 DEG Baum<\>ae.
GB3440662A 1962-09-07 1962-09-07 Method of preparing salicylic acid Expired GB986867A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3440662A GB986867A (en) 1962-09-07 1962-09-07 Method of preparing salicylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3440662A GB986867A (en) 1962-09-07 1962-09-07 Method of preparing salicylic acid

Publications (1)

Publication Number Publication Date
GB986867A true GB986867A (en) 1965-03-24

Family

ID=10365240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3440662A Expired GB986867A (en) 1962-09-07 1962-09-07 Method of preparing salicylic acid

Country Status (1)

Country Link
GB (1) GB986867A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL423698A1 (en) * 2017-12-04 2019-06-17 Valeant Pharmaceuticals Ireland Method for producing salicylic acid with increased purity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL423698A1 (en) * 2017-12-04 2019-06-17 Valeant Pharmaceuticals Ireland Method for producing salicylic acid with increased purity

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