JPS5540647A - Production of 1,3,6-naphthalenetrisulfonic acid - Google Patents
Production of 1,3,6-naphthalenetrisulfonic acidInfo
- Publication number
- JPS5540647A JPS5540647A JP11438378A JP11438378A JPS5540647A JP S5540647 A JPS5540647 A JP S5540647A JP 11438378 A JP11438378 A JP 11438378A JP 11438378 A JP11438378 A JP 11438378A JP S5540647 A JPS5540647 A JP S5540647A
- Authority
- JP
- Japan
- Prior art keywords
- naphthalene
- production
- naphthalenetrisulfonic acid
- sulfonation
- sulfur trioxide
- 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: The trisulfonation of naphthalene is conducted using a sulfonation agent of sulfur trioxide/pyridine under specific conditions in one step to produce title compound in high yield.
CONSTITUTION: The reaction between naphthalene and sulfur trioxide/pyridine adduct is effected at 230W270°C to produce 1,3,6-naphthalenetrisulfonic acid. The amount of the sulfonation reagent is over 3, usually 3W5 times the molar quantity of the naphthalene. The reaction temperature of lower than 230°C causes the production of disulfonated products and exceeding 270°C undesirably causes the decomposition of the sulfonation reagent.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11438378A JPS5540647A (en) | 1978-09-18 | 1978-09-18 | Production of 1,3,6-naphthalenetrisulfonic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11438378A JPS5540647A (en) | 1978-09-18 | 1978-09-18 | Production of 1,3,6-naphthalenetrisulfonic acid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5540647A true JPS5540647A (en) | 1980-03-22 |
JPS5538338B2 JPS5538338B2 (en) | 1980-10-03 |
Family
ID=14636293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11438378A Granted JPS5540647A (en) | 1978-09-18 | 1978-09-18 | Production of 1,3,6-naphthalenetrisulfonic acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5540647A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008511281A (en) * | 2004-08-25 | 2008-04-10 | アクスコ−モーターズ オイ | Axial flux induction electrical device |
-
1978
- 1978-09-18 JP JP11438378A patent/JPS5540647A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008511281A (en) * | 2004-08-25 | 2008-04-10 | アクスコ−モーターズ オイ | Axial flux induction electrical device |
Also Published As
Publication number | Publication date |
---|---|
JPS5538338B2 (en) | 1980-10-03 |
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