GB386705A - Process of preparing hydrated citric acid - Google Patents
Process of preparing hydrated citric acidInfo
- Publication number
- GB386705A GB386705A GB23390/31A GB2339031A GB386705A GB 386705 A GB386705 A GB 386705A GB 23390/31 A GB23390/31 A GB 23390/31A GB 2339031 A GB2339031 A GB 2339031A GB 386705 A GB386705 A GB 386705A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- citric acid
- less
- per cent
- hydrated citric
- 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
Hydrated citric acid is obtained by effecting oversaturation of a solution of citric acid at a temperature not above 41 DEG C., so that the acid is crystallized out directly. The pressure is maintained at less than 1\ba1/4\be inches absolute, that is, the boiling point is less than 41 DEG C. The process may be carried out with impure solutions of the acid, but is not practicable if the ratio of acid to impurities is much less than 4 to 1. For example, with a solution containing 15 parts of acid to 1 of impurity, 50 per cent of the acid may be obtained in a first crystallization, and the mother liquor reworked until a total yield of 75 per cent is obtained. The remainder of the acid may be recovered as calcium citrate in known manner.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US386705XA | 1931-07-15 | 1931-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB386705A true GB386705A (en) | 1933-01-26 |
Family
ID=21901234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23390/31A Expired GB386705A (en) | 1931-07-15 | 1931-08-19 | Process of preparing hydrated citric acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB386705A (en) |
-
1931
- 1931-08-19 GB GB23390/31A patent/GB386705A/en not_active Expired
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