JPS5512150A - Preparation of tartrazine - Google Patents

Preparation of tartrazine

Info

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
Application number
JP8484178A
Other languages
Japanese (ja)
Other versions
JPS5751862B2 (en
Inventor
Jiro Konishi
Tatsuro Shiomitsu
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.)
SHIYOUHEI KAGAKU KK
Nippon Synthetic Chemical Industry Co Ltd
Original Assignee
SHIYOUHEI KAGAKU KK
Nippon Synthetic Chemical Industry Co Ltd
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 SHIYOUHEI KAGAKU KK, Nippon Synthetic Chemical Industry Co Ltd filed Critical SHIYOUHEI KAGAKU KK
Priority to JP8484178A priority Critical patent/JPS5512150A/en
Publication of JPS5512150A publication Critical patent/JPS5512150A/en
Publication of JPS5751862B2 publication Critical patent/JPS5751862B2/ja
Granted legal-status Critical Current

Links

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
JP8484178A 1978-07-11 1978-07-11 Preparation of tartrazine Granted JPS5512150A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517574A (en) * 1974-07-10 1976-01-21 Onoda Cement Co Ltd HOSOSENGATADENKAISOCHI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517574A (en) * 1974-07-10 1976-01-21 Onoda Cement Co Ltd HOSOSENGATADENKAISOCHI

Cited By (1)

* Cited by examiner, † Cited by third party
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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