JPS5512150A - Preparation of tartrazine - Google Patents
Preparation of tartrazineInfo
- Publication number
- JPS5512150A JPS5512150A JP8484178A JP8484178A JPS5512150A JP S5512150 A JPS5512150 A JP S5512150A JP 8484178 A JP8484178 A JP 8484178A JP 8484178 A JP8484178 A JP 8484178A JP S5512150 A JPS5512150 A JP S5512150A
- Authority
- JP
- Japan
- Prior art keywords
- tartrazine
- acetosuccinate
- alkali
- aqueous medium
- compound
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To improve the yield of tartrazine, by mixing an acetosuccinate with a diazonium compound of sulfanilic acid in an aqueous medium dbove a specific initial concetration, and by reacting them with an alkali.
CONSTITUTION: An acetosuccinate is mixed with a diazonium compound (D) of sulfanilic acid in an aqueous medium to give an initial concentration of D ≥7 wt%, preferably 7W30 wt%, and then reacted with an alkali to form tartrazine. In case the compound D is in the form of a salt, the amount to be used is based on the structure of the formula.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8484178A JPS5512150A (en) | 1978-07-11 | 1978-07-11 | Preparation of tartrazine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8484178A JPS5512150A (en) | 1978-07-11 | 1978-07-11 | Preparation of tartrazine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5512150A true JPS5512150A (en) | 1980-01-28 |
JPS5751862B2 JPS5751862B2 (en) | 1982-11-04 |
Family
ID=13842008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8484178A Granted JPS5512150A (en) | 1978-07-11 | 1978-07-11 | Preparation of tartrazine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5512150A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106831588A (en) * | 2017-01-19 | 2017-06-13 | 南通海之阳膜化工有限公司 | A kind of synthetic method of food additives lemon yellow |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS517574A (en) * | 1974-07-10 | 1976-01-21 | Onoda Cement Co Ltd | HOSOSENGATADENKAISOCHI |
-
1978
- 1978-07-11 JP JP8484178A patent/JPS5512150A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS517574A (en) * | 1974-07-10 | 1976-01-21 | Onoda Cement Co Ltd | HOSOSENGATADENKAISOCHI |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106831588A (en) * | 2017-01-19 | 2017-06-13 | 南通海之阳膜化工有限公司 | A kind of synthetic method of food additives lemon yellow |
Also Published As
Publication number | Publication date |
---|---|
JPS5751862B2 (en) | 1982-11-04 |
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