GB289354A - Improved process for purifying sodium sulphide - Google Patents
Improved process for purifying sodium sulphideInfo
- Publication number
- GB289354A GB289354A GB3052027A GB3052027A GB289354A GB 289354 A GB289354 A GB 289354A GB 3052027 A GB3052027 A GB 3052027A GB 3052027 A GB3052027 A GB 3052027A GB 289354 A GB289354 A GB 289354A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sodium sulphide
- soc
- per cent
- solution
- filtering
- 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
- C01B17/00—Sulfur; Compounds thereof
- C01B17/22—Alkali metal sulfides or polysulfides
- C01B17/36—Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
289,354. Botson, R., and Soc. Industrielle des Applications Chimiques Soc. Anon. Nov. 14, 1927. Sodium sulphide.-Pure sodium sulphide is prepared by liquifying the crude product by means of steam under pressure, adding, say 1 per cent of terpinolene to precipitate impurities, diluting with water to give a solution of 13‹ BÚ., filtering, as in centrifugal apparatus, adding caustic soda of 35‹ BÚ. until the specific gravity is 18.5 BÚ., again filtering, concentrating to obtain a 50 per cent solution, and crystallizing. The pure product is free of iron, copper, and hyposulphite, and may be used for preparing toning-solutions for use in photographic processes. The dried crystals may be pressed into blocks or be amalgamated with a suitable paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3052027A GB289354A (en) | 1927-11-14 | 1927-11-14 | Improved process for purifying sodium sulphide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3052027A GB289354A (en) | 1927-11-14 | 1927-11-14 | Improved process for purifying sodium sulphide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB289354A true GB289354A (en) | 1928-04-26 |
Family
ID=10308946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3052027A Expired GB289354A (en) | 1927-11-14 | 1927-11-14 | Improved process for purifying sodium sulphide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB289354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118405663A (en) * | 2024-04-24 | 2024-07-30 | 武汉工程大学 | Purification method of sodium sulfide as raw material for preparing zinc sulfide |
-
1927
- 1927-11-14 GB GB3052027A patent/GB289354A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118405663A (en) * | 2024-04-24 | 2024-07-30 | 武汉工程大学 | Purification method of sodium sulfide as raw material for preparing zinc sulfide |
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