GB353921A - Improvements in and relating to the production and purification of salicylic acid or?-cresotinic acid or their salts - Google Patents
Improvements in and relating to the production and purification of salicylic acid or?-cresotinic acid or their saltsInfo
- Publication number
- GB353921A GB353921A GB1312630A GB1312630A GB353921A GB 353921 A GB353921 A GB 353921A GB 1312630 A GB1312630 A GB 1312630A GB 1312630 A GB1312630 A GB 1312630A GB 353921 A GB353921 A GB 353921A
- Authority
- GB
- United Kingdom
- Prior art keywords
- salt
- sodium
- acid
- sodium salicylate
- crystallization
- 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
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Sodium salicylate is recovered from crude solutions by crystallization at a temperature below the dehydration temperature of the hexahydrated salt, i.e. below 20 DEG C. The crystals so obtained, after removal of mother liquor and washing with cold water, may be dehydrated at a low temperature, preferably in vacuo, to yield a purified sodium salicylate, or they may be dissolved in water and acidified to yield a relatively pure salicylic acid; in either event, the hydrated salt may first be further purified by recrystallization. The crystallization may be facilitated by seeding the solution with a small amount of the crystalline hydrated salt, and details are given of the initial preparation of a small amount of the hydrated salt from the commercial anhydrous salt. An example is given also describing the treatment of crude sodium salicylate prepared by carbonating sodium phenolate. The processes described above may be applied to the treatment of sodium o-cresotinate, the trihydrate of which is stable up to about 50 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1312630A GB353921A (en) | 1930-04-29 | 1930-04-29 | Improvements in and relating to the production and purification of salicylic acid or?-cresotinic acid or their salts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1312630A GB353921A (en) | 1930-04-29 | 1930-04-29 | Improvements in and relating to the production and purification of salicylic acid or?-cresotinic acid or their salts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB353921A true GB353921A (en) | 1931-07-29 |
Family
ID=10017296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1312630A Expired GB353921A (en) | 1930-04-29 | 1930-04-29 | Improvements in and relating to the production and purification of salicylic acid or?-cresotinic acid or their salts |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB353921A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107098809A (en) * | 2017-05-15 | 2017-08-29 | 天津市风船化学试剂科技有限公司 | A kind of method for purification of high-purity sodium salicylate |
-
1930
- 1930-04-29 GB GB1312630A patent/GB353921A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107098809A (en) * | 2017-05-15 | 2017-08-29 | 天津市风船化学试剂科技有限公司 | A kind of method for purification of high-purity sodium salicylate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB353921A (en) | Improvements in and relating to the production and purification of salicylic acid or?-cresotinic acid or their salts | |
| GB313036A (en) | Method of leaching raw phosphate | |
| US1991329A (en) | Alkali-metal trichlorophenolates | |
| GB400413A (en) | Process for the production of lactic acid | |
| US1994002A (en) | Zinc 2.4.5-trichlorophenolate | |
| US2803651A (en) | Process of isolation of choline salts | |
| US1980996A (en) | Process for the preparation of calcium lactobionate | |
| GB437652A (en) | Improvements in or relating to the production of potassium sulphate | |
| US1755362A (en) | Method of making sodium salicylates | |
| US2157137A (en) | Xyloseen-1.2-tribenzoates and process for producing the same | |
| US2186975A (en) | Crystalline calcium lactobionate calcium bromide and process for making the same | |
| US2091433A (en) | Production of dextrose | |
| DE386935C (en) | Process for the production of large crystallized theobromine | |
| GB384142A (en) | Improvements in the production of double salts of calcium nitrate | |
| US2810755A (en) | Recovery of citric acid | |
| GB492310A (en) | Improvements in or relating to the manufacture of sodium phenate | |
| SU23411A1 (en) | Method for producing mercury-substituted in the core of dimethoxybenzoic acid derivative | |
| SU67145A1 (en) | The method of obtaining crystalline glucose | |
| US2044793A (en) | Process for crystallizing calcium salts of aldonic acids and resulting products | |
| SU72375A1 (en) | The method of purification of 4-sulfoanthranilic acid | |
| US1913748A (en) | Process of preparing stebbins acid | |
| Mills | CCXXIX.—The preparation of durylic and pyromellitic acids | |
| Glattfeld et al. | The Resolution of dl-Erythronic Acid1 | |
| SU73273A1 (en) | The method of producing potassium alum simultaneously with the production of hydrocarbons, ketones and ketone acids by the reaction of Friedel and Crafts | |
| SU61188A1 (en) | The method of producing diacetyl-1-sorbose |