FR2496630B1 - - Google Patents
Info
- Publication number
- FR2496630B1 FR2496630B1 FR8123508A FR8123508A FR2496630B1 FR 2496630 B1 FR2496630 B1 FR 2496630B1 FR 8123508 A FR8123508 A FR 8123508A FR 8123508 A FR8123508 A FR 8123508A FR 2496630 B1 FR2496630 B1 FR 2496630B1
- Authority
- FR
- France
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/163—Phosphorous acid; Salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/217,631 US4330515A (en) | 1980-12-18 | 1980-12-18 | Preparation of phosphorous acid from industrial waste material containing phosphites |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2496630A1 FR2496630A1 (fr) | 1982-06-25 |
| FR2496630B1 true FR2496630B1 (forum.php) | 1985-04-05 |
Family
ID=22811860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8123508A Granted FR2496630A1 (fr) | 1980-12-18 | 1981-12-16 | Preparation d'acide phosphoreux a partir de rejets industriels contenant des phosphites |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4330515A (forum.php) |
| FR (1) | FR2496630A1 (forum.php) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4380531A (en) * | 1981-10-21 | 1983-04-19 | Occidental Chemical Corporation | Process for preparing phosphorus acid from industrial waste materials |
| US5368832A (en) * | 1991-06-07 | 1994-11-29 | Occidental Chemical Corporation | Zero discharge process for manufacturing of phosphorous acid and hypophosphorous acid |
| CN100564284C (zh) * | 2007-10-08 | 2009-12-02 | 江苏康祥集团公司 | 次磷酸钠生产过程中废水处理的方法 |
| CN103183326A (zh) * | 2013-04-18 | 2013-07-03 | 枣庄市鑫泰水处理技术有限公司 | 化学废渣生产亚磷酸晶体的生产工艺 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE442210C (de) * | 1924-05-17 | 1927-03-24 | Merck Ag E | Herstellung von Hypophosphiten unter gleichzeitiger Gewinnung von Phosphiten und Phosphorsaeure |
| FR737080A (fr) * | 1932-05-13 | 1932-12-06 | Bayerische Stickstoff Werke Ag | Procédé pour oxyder le phosphore et pour fabriquer des phosphites et de l'acide phosphoreux |
| US2843457A (en) * | 1954-11-17 | 1958-07-15 | Hooker Electrochemical Co | Production of oxy acids of phosphorus |
| FR1218063A (fr) * | 1958-12-29 | 1960-05-09 | Procédé de fabrication d'acide hypophosphoreux pur | |
| GB1052410A (forum.php) * | 1962-11-14 | |||
| US3645682A (en) * | 1967-09-13 | 1972-02-29 | Multi Minerals Ltd | A process for producing phosphoric acid by the use of ion exchange resins |
| DE2833380A1 (de) * | 1978-07-29 | 1980-02-14 | Hoechst Ag | Verfahren zur herstellung von phosphoriger saeure |
-
1980
- 1980-12-18 US US06/217,631 patent/US4330515A/en not_active Expired - Fee Related
-
1981
- 1981-12-16 FR FR8123508A patent/FR2496630A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2496630A1 (fr) | 1982-06-25 |
| US4330515A (en) | 1982-05-18 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |