GB177310A - Improvements in or relating to the manufacture of pyrosulphates - Google Patents
Improvements in or relating to the manufacture of pyrosulphatesInfo
- Publication number
- GB177310A GB177310A GB269321A GB269321A GB177310A GB 177310 A GB177310 A GB 177310A GB 269321 A GB269321 A GB 269321A GB 269321 A GB269321 A GB 269321A GB 177310 A GB177310 A GB 177310A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pyrosulphates
- agitator
- sulphate
- sulphuric acid
- temperature
- 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
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The pyrosulphates of the alkali metals and of ammonia may be prepared in a powdered form by heating the corresponding bisulphates or a mixture of the sulphate with sulphuric acid to a temperature of 200-300 DEG C. (preferably at about 250 DEG C.) under reduced pressure and with agitation. The temperature at the end of the reaction is kept below the melting-point of the product, so that the latter solidifies and is broken up by the agitator. The heat is conveniently applied by an alternating current between carbon electrodes. According to an example sodium bisulphate or its equivalent in sulphate and sulphuric acid is heated to 250 DEG C. in a flat iron pan fitted with an agitator and the pressure reduced to 26-28 inches of vacuum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB269321A GB177310A (en) | 1921-01-20 | 1921-01-20 | Improvements in or relating to the manufacture of pyrosulphates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB269321A GB177310A (en) | 1921-01-20 | 1921-01-20 | Improvements in or relating to the manufacture of pyrosulphates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB177310A true GB177310A (en) | 1922-03-30 |
Family
ID=9744122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB269321A Expired GB177310A (en) | 1921-01-20 | 1921-01-20 | Improvements in or relating to the manufacture of pyrosulphates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB177310A (en) |
-
1921
- 1921-01-20 GB GB269321A patent/GB177310A/en not_active Expired
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