GB190303563A - An Improvement in the Manufacture of Saccharin. - Google Patents

An Improvement in the Manufacture of Saccharin.

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Publication number
GB190303563A
GB190303563A GB190303563DA GB190303563A GB 190303563 A GB190303563 A GB 190303563A GB 190303563D A GB190303563D A GB 190303563DA GB 190303563 A GB190303563 A GB 190303563A
Authority
GB
United Kingdom
Prior art keywords
saccharin
amide
oxidizing
agent
oxidation
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
Inventor
Rudolf Barge
Leon Givaudan
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190303563A publication Critical patent/GB190303563A/en
Expired legal-status Critical Current

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Abstract

3563. Barge, R., and Givaudan, L. Feb. 14. Saccharin.-To avoid loss in the oxidation of toluene sulphamide to saccharin owing to the oxidation of the saccharin first formed, the permanganate or other oxidizing-agent is used in quantity insufficient completely to oxidize all the amide. The amide is treated with the oxidizing- agent in an alkaline or neutral solution, the temperature being kept below 60‹ C. Undissolved amide is dissolved by adding caustic soda before or after the addition of the oxidizing-agent, and the precipitated manganese is filtered off. Excess amide is precipitated by neutralizing the solution with hydrochloric acid &c., and is filtered off for further use, and the filtrate is then acidified to separate out the saccharin.
GB190303563D 1903-02-14 1903-02-14 An Improvement in the Manufacture of Saccharin. Expired GB190303563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190303563T 1903-02-14

Publications (1)

Publication Number Publication Date
GB190303563A true GB190303563A (en) 1903-11-19

Family

ID=32541011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190303563D Expired GB190303563A (en) 1903-02-14 1903-02-14 An Improvement in the Manufacture of Saccharin.

Country Status (1)

Country Link
GB (1) GB190303563A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745840A (en) * 1953-04-08 1956-05-15 Monsanto Chemicals Recovery and purification of saccharin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745840A (en) * 1953-04-08 1956-05-15 Monsanto Chemicals Recovery and purification of saccharin

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