GB494214A - Improvements in the treatment of organic acid anhydrides - Google Patents
Improvements in the treatment of organic acid anhydridesInfo
- Publication number
- GB494214A GB494214A GB34757/37A GB3475737A GB494214A GB 494214 A GB494214 A GB 494214A GB 34757/37 A GB34757/37 A GB 34757/37A GB 3475737 A GB3475737 A GB 3475737A GB 494214 A GB494214 A GB 494214A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid anhydrides
- hypochlorite
- treatment
- organic acid
- anhydride
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/573—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Epoxy Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Aliphatic acid anhydrides are freed from sulphur and labile organo-sulphur compounds by treating with a hypochlorite. The anhydride may be stirred with the hypochlorite and left in contact therewith for some time, decanted, and distilled with sodium acetate. In examples, calcium hypochlorite (bleaching powder having 68 per cent available chlorine) is used. The mixture of anhydride and sodium acetate is heated to about 132 DEG C. cooled, and distilled under vacuum. Specification 100,450, [Class 2 (iii)], is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US494214XA | 1936-12-24 | 1936-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB494214A true GB494214A (en) | 1938-10-21 |
Family
ID=21959740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34757/37A Expired GB494214A (en) | 1936-12-24 | 1937-12-15 | Improvements in the treatment of organic acid anhydrides |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB494214A (en) |
-
1937
- 1937-12-15 GB GB34757/37A patent/GB494214A/en not_active Expired
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