US1042605A - Manufacture of hypophosphoric acid and of its salts. - Google Patents
Manufacture of hypophosphoric acid and of its salts. Download PDFInfo
- Publication number
- US1042605A US1042605A US63440811A US1911634408A US1042605A US 1042605 A US1042605 A US 1042605A US 63440811 A US63440811 A US 63440811A US 1911634408 A US1911634408 A US 1911634408A US 1042605 A US1042605 A US 1042605A
- Authority
- US
- United States
- Prior art keywords
- salts
- acid
- acids
- anodes
- manufacture
- 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 - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
Definitions
- ture of hypophosphoric acid'and of its salts and consists in electrolytically oxidizing anodes consisting of phosphids.
- Suitable phosphids are forinstance phosphids of copper, silver, nickel and tin.
- the electrolysis is preferably effected with a weak acid electrolytical bathand with a cathode consisting of the metal contained in the phosphid. If the voltage is kept in suitable tained in addition tophosphoric acid. If the voltage is permanently kept higher the percentage of phosphoric acid is increased if on the contrary the voltage is kept lower phorous acid increases.
- the electrolysis can beeffectedwith' or without diaphragm for separating the anode space from the cathode space;
- the electrolysis is kept in operation till the most part of the metal phosphid used as drawn off or separated from the metal 5 on e by filtering.
- the electrolyte may ti enfiie used directly as a solution of hypophosphoric acid or half of its volume may be Specification of Letters Patent. Application filed June 21,1911. Serial No. (534,408.
- the liquid may be concentrated .so that the diiiicultly soluble acid sodium hypophosphate NaHPO 2H O, is crystallized. out from the solution.
- phoric acids and its salts comprising electrolytically oxidizing metalphosphid anodes in a weakly acid electrolyte at a voltage from 3 to 10 volts in opposition to cathodes 5.
- Process of manufacturing hypophosphoric acids and its salts comprising elecin a'weakly acid electrolyte containing small quantities of weakly'oxidizing substances.
- phoric acids and its salts comprising electrolytically oxidizing metalphosphid anodes, inv a weakly acid electrolyte at a voltage- 4.
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
' lmitspreferably from 3 to 10 volts a good yield of hypophosphoric acid-up to 60% of the phosphorus entering into solution is obthe quantity of phosphorus and hypophosanode is dissolved. Then the electrolyte is UNI ED STATES PATENT canton;
an'rnun nosnnnn'm, or isnnnxnonnmanx.
MANUFACTURE or :axrornosrnomc non) AND. or ITS saws.
ture of hypophosphoric acid'and of its salts and consists in electrolytically oxidizing anodes consisting of phosphids. Suitable phosphids are forinstance phosphids of copper, silver, nickel and tin. The electrolysis is preferably effected with a weak acid electrolytical bathand with a cathode consisting of the metal contained in the phosphid. If the voltage is kept in suitable tained in addition tophosphoric acid. If the voltage is permanently kept higher the percentage of phosphoric acid is increased if on the contrary the voltage is kept lower phorous acid increases.
Care is to be taken that in acidulating the bath solution strongly oxidizing acids such as nitric acid or acids which develop oxidizi products during electrolysis such as h ifiogenous hydrogen'acids and acids of low conductive property are avoided. Sulfuric acid as a solution of 1 to 10% and formic acid of the same concentration are most available. Small quantities of compara tively weak oxidizingagents such as chromic acid may be added to the electrolyte as catalytic substances.-
The electrolysis can beeffectedwith' or without diaphragm for separating the anode space from the cathode space;
. The electrolysis is kept in operation till the most part of the metal phosphid used as drawn off or separated from the metal 5 on e by filtering. The electrolyte may ti enfiie used directly as a solution of hypophosphoric acid or half of its volume may be Specification of Letters Patent. Application filed June 21,1911. Serial No. (534,408.
Patented Oct. 29,1912.
-' addition to the second half of the electrolyte the liquid may be concentrated .so that the diiiicultly soluble acid sodium hypophosphate NaHPO 2H O, is crystallized. out from the solution.
What I claim is: g
1'. Process of manufacturing hypophostrolytically oxidizing inetalphosphid anodes.
2. Process of manufacturing hypophosphoric acids and its salts comprising elec- 1 trolytically oxidizing metalphosphid anodes metal of the phosphid anodes.
3. Process of manufacturing hypophosphoric acids and its salts comprising elec from 3 to 10 volts.
phoric acids and its salts comprising electrolytically oxidizing metalphosphid anodes in a weakly acid electrolyte at a voltage from 3 to 10 volts in opposition to cathodes 5. Process of manufacturing hypophostrolytically oxidizing metalphosphid anodes substantially free from acids, with strongly 7. Process of manufacturing hypophosphoric acids and its salts comprising elecin a'weakly acid electrolyte containing small quantities of weakly'oxidizing substances.
In testimony in presence of twowitnessesl ARTH R ROSENHEIMJ \Vitnesses: I
HENRY HASPER,'
neutralized by carbonate of soda and after Copies 0! this patent may be obtained for five cents Washingt 'WOLDEMAR HAUPT. w
each, by addressing the Commissioner of Patents, on, D. G.
phoric acids and its salts comprising electrolytically oxidizing metalphosphid anodes, inv a weakly acid electrolyte at a voltage- 4. Process of manufacturing hypophoscontaining the metal of the phosphid anodes.
containing the metal of the phosphid anodes.
trolyticall oxidizing \metalphosphid anodes whereof, I aiiix my signature in opposition to cathodes containing the phoric acids and its salts comprlsing elecin a well conducting weakly acid electrolyte
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63440811A US1042605A (en) | 1911-06-21 | 1911-06-21 | Manufacture of hypophosphoric acid and of its salts. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63440811A US1042605A (en) | 1911-06-21 | 1911-06-21 | Manufacture of hypophosphoric acid and of its salts. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1042605A true US1042605A (en) | 1912-10-29 |
Family
ID=3110879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US63440811A Expired - Lifetime US1042605A (en) | 1911-06-21 | 1911-06-21 | Manufacture of hypophosphoric acid and of its salts. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1042605A (en) |
-
1911
- 1911-06-21 US US63440811A patent/US1042605A/en not_active Expired - Lifetime
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