GB190603222A - Manufacture of Formaldehyde Sulphoxylates - Google Patents
Manufacture of Formaldehyde SulphoxylatesInfo
- Publication number
- GB190603222A GB190603222A GB190603222DA GB190603222A GB 190603222 A GB190603222 A GB 190603222A GB 190603222D A GB190603222D A GB 190603222DA GB 190603222 A GB190603222 A GB 190603222A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ketone
- formaldehyde
- sulphoxylates
- sulphoxylate
- acetone
- 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
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
3222. Imray, O., [Farbwerke vorm. Meister, Lucius, & Br³ning]. Feb. 9. Formaldehyde sulphoxylates are produced by treating alkali hydrosulphites with acetone or ethylmethyl ketone, crystallizing the ketone sulphoxylate in vacuo, and treating with formaldehyde. Or acetone sulphoxylate may be obtained as zinc compound by the action of zinc dust on acetone and sulphur dioxide at 50-60‹ C., and this is converted into the sodium compound by' treating it with sodium carbonate. The ketone sulphoxylate is treated with formaldehyde, and the ketone is eliminated, with formation of formaldehyde sulphoxylates. The change is readily detected because the solution of the ketone sulphoxylates treated with the equivalent proportion of formaldehyde no longer reduces indigo sulphonic acid in the cold. The formaldehyde sodium sulphoxylate may then be obtained by evaporating in vacuo. Other salts, such as zinc salts, may be used in like manner for sodium ketone sulphoxylates. The preparation of ketone sulphoxylates from acetone or ethylmethyl ketone and alkali hydrosulphites with their isolation by crystallization is described, for instance, in Specification No. 6216, A.D. 1904.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190603222T | 1906-02-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190603222A true GB190603222A (en) | 1906-08-02 |
Family
ID=32486207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190603222D Expired GB190603222A (en) | 1906-02-09 | 1906-02-09 | Manufacture of Formaldehyde Sulphoxylates |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190603222A (en) |
-
1906
- 1906-02-09 GB GB190603222D patent/GB190603222A/en not_active Expired
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