GB1215739A - Preparation of alkali metal hypophosphites and phosphine - Google Patents
Preparation of alkali metal hypophosphites and phosphineInfo
- Publication number
- GB1215739A GB1215739A GB3293868A GB3293868A GB1215739A GB 1215739 A GB1215739 A GB 1215739A GB 3293868 A GB3293868 A GB 3293868A GB 3293868 A GB3293868 A GB 3293868A GB 1215739 A GB1215739 A GB 1215739A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali metal
- phosphine
- group
- reaction
- july
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/06—Hydrogen phosphides
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,215,739. Alkali metal hypoph03phite; phosphine. NIPPON CHEMICAL INDUSTRIAL CO. Ltd. 10 July, 1968 [10 July, 1967], No. 32938/68. Heading C1A. An alkali metal hypophosphite and phosphine are produced by the addition of an alkali metal hydroxide to an aqueous dispersion of P in the presence of a finely divided material insoluble in water, and an aqueous alkaline solution, at a temperature above the m.pt, of P. The finely divided material can be an alkaline earth metal salt; an oxide of a metal of Group II, Group III or Group IV, e.g. Ti, Al, Mg, Si; clays such as kaolin, bentonite or talc; activated C; or cellulosic pulp. P and the additive material are introduced into a reactor which contains water above the m.pt. of P, preferably higher than 70‹ C.; the reaction starts immediately and PH3 is evolved. When P compounds are produced as by-products, Ca(OH) 2 or Ca(H 2 PO 2 ) may be added to control the side-reactions, which compounds may be added before or after the reaction. Ca remaining in the reaction mix can be removed by treatment with C0 2 , oxalic acid or one of its salts.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4403267 | 1967-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1215739A true GB1215739A (en) | 1970-12-16 |
Family
ID=12680284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3293868A Expired GB1215739A (en) | 1967-07-10 | 1968-07-10 | Preparation of alkali metal hypophosphites and phosphine |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1215739A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374816A (en) * | 1979-05-03 | 1983-02-22 | Stauffer Chemical Company | Process for producing hypo-phosphorous acid (H3 PO2) and non-transition metal hypophosphites |
-
1968
- 1968-07-10 GB GB3293868A patent/GB1215739A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374816A (en) * | 1979-05-03 | 1983-02-22 | Stauffer Chemical Company | Process for producing hypo-phosphorous acid (H3 PO2) and non-transition metal hypophosphites |
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