GB173479A - Improved process of purifying lactic acid - Google Patents
Improved process of purifying lactic acidInfo
- Publication number
- GB173479A GB173479A GB29034/21A GB2903421A GB173479A GB 173479 A GB173479 A GB 173479A GB 29034/21 A GB29034/21 A GB 29034/21A GB 2903421 A GB2903421 A GB 2903421A GB 173479 A GB173479 A GB 173479A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lactate
- magnesium
- lactic acid
- acid
- 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
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
- C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The lactic acid or lactate to be purified is first converted into magnesium lactate by heating its solution with magnesium compounds such as carbonate, hydroxide, or oxide. One method of carrying out the process is by double decomposition of the more easily soluble lime compound or other soluble lactate with a suitable magnesium compound such as sulphate. The acid is then liberated either by direct acidification with sulphuric acid and extraction with acetone, ether, etc.; or the magnesium lactate is suspended in acetone or ether and then agitated with sulphuric acid when magnesium sulphate separates and the solution of lactic acid is evaporated. The product in each case may be purified with boneblack. In examples, commercial lactic acid is treated with magnesia and the resulting lactate treated by each of the above-described methods. The Specification as open to inspection under Sect. 91 (3) (a) describes also the preparation of the magnesium lactate by effecting the lactic acid fermentation in presence of basic magnesium compounds. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE173479X | 1920-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB173479A true GB173479A (en) | 1922-11-09 |
Family
ID=5690879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29034/21A Expired GB173479A (en) | 1920-12-27 | 1921-11-01 | Improved process of purifying lactic acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB173479A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7705180B2 (en) | 2004-06-17 | 2010-04-27 | Purac Biochem B.V. | Process for the preparation of lactic acid or lactate from a magnesium lactate comprising medium |
| US7867736B2 (en) | 2006-03-08 | 2011-01-11 | Purac Biochem B.V. | Method for preparing an organic amine—lactic acid complex |
| EP3056490A1 (en) | 2015-02-13 | 2016-08-17 | PURAC Biochem BV | Method for manufacturing lactide |
| US10017451B2 (en) | 2011-12-23 | 2018-07-10 | Purac Biochem B.V. | Lactic acid extraction |
| JP2019513379A (en) * | 2016-04-12 | 2019-05-30 | ピュラック バイオケム ビー． ブイ． | Magnesium lactate fermentation method |
| US10683520B2 (en) | 2011-12-23 | 2020-06-16 | Purac Biochem Bv | Polycarboxylic acid extraction |
-
1921
- 1921-11-01 GB GB29034/21A patent/GB173479A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7705180B2 (en) | 2004-06-17 | 2010-04-27 | Purac Biochem B.V. | Process for the preparation of lactic acid or lactate from a magnesium lactate comprising medium |
| US7867736B2 (en) | 2006-03-08 | 2011-01-11 | Purac Biochem B.V. | Method for preparing an organic amine—lactic acid complex |
| US10017451B2 (en) | 2011-12-23 | 2018-07-10 | Purac Biochem B.V. | Lactic acid extraction |
| US10683520B2 (en) | 2011-12-23 | 2020-06-16 | Purac Biochem Bv | Polycarboxylic acid extraction |
| US11299447B2 (en) | 2011-12-23 | 2022-04-12 | Purac Biochem B.V. | Method for isolating a carboxylic acid from an aqueous solution |
| EP3056490A1 (en) | 2015-02-13 | 2016-08-17 | PURAC Biochem BV | Method for manufacturing lactide |
| US10399956B2 (en) | 2015-02-13 | 2019-09-03 | Purac Biochem B.V. | Method for manufacturing lactide |
| JP2019513379A (en) * | 2016-04-12 | 2019-05-30 | ピュラック バイオケム ビー． ブイ． | Magnesium lactate fermentation method |
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