GB251267A - Manufacture of basic chromium salts - Google Patents
Manufacture of basic chromium saltsInfo
- Publication number
- GB251267A GB251267A GB9939/26A GB993926A GB251267A GB 251267 A GB251267 A GB 251267A GB 9939/26 A GB9939/26 A GB 9939/26A GB 993926 A GB993926 A GB 993926A GB 251267 A GB251267 A GB 251267A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chromium
- parts
- salt
- sulphate
- treated
- 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
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Coloring (AREA)
Abstract
251,267. I. G. Farbenindustrie Akt.- Ges., (Assignees of Farbwerke vorm. Meister, Lucius, & Br³ning). April 24, 1925, [Convention date]. Chrome, iron, and like mineral tanning.- Soluble double salts suitable for tanning are prepared from basic chromium salts and a salt of calcium or a metal allied to it such as magnesium, zinc, or aluminium. The process may be effected by mixing a neutral chromium salt with the other salt and adding alkali; or by mixing chromium hydroxide with the salt or the corresponding oxide and adding acid; or by adding an oxides or oxides to an acid chromium salt solution, such as that resulting from an oxidation process; or the double salt may be made during the tanning operation. In the examples ,chromium hydroxide and magnesium sulphate are treated with sulphuric acid, 100 parts of pelt being tumbled in a tanning cask with 150 parts of water and 2 parts of salt with the addiion in three portions of an amount of the double chromium salt containing 1.7-2.25 parts of chromium oxide: chromium hydroxide and magnesium chloride are treated with hydrochloric acid; chromium oxychloride is dissolved in calcium chloride solution with the aid of heat; chromium hydroxide and zinc sulphate are treated with sulphuric acid; chromium hydroxide and aluminium sulphate are dissolved in sulphuric acid; and 1000 parts of pickled pelt are treated in a tumbler with 59 parts of chromium sulphate and 52 parts of magnesium sulphate in 1500 parts of water and sodium carbonate solution containing 22.5 parts anhydrous carbonate is added. The solution of the double salt is dried for instance by evaporation in a vacuum.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE251267X | 1925-04-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB251267A true GB251267A (en) | 1927-04-21 |
Family
ID=5942129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9939/26A Expired GB251267A (en) | 1925-04-24 | 1926-04-15 | Manufacture of basic chromium salts |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB251267A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4108596A (en) * | 1975-07-11 | 1978-08-22 | Revere Copper And Brass, Incorporated | Recovery of chromium values from waste streams by the use of alkaline magnesium compounds |
US4629616A (en) * | 1983-03-22 | 1986-12-16 | Basf Aktiengesellschaft | Basic chromium aluminum sulfates and their preparation |
-
1926
- 1926-04-15 GB GB9939/26A patent/GB251267A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4108596A (en) * | 1975-07-11 | 1978-08-22 | Revere Copper And Brass, Incorporated | Recovery of chromium values from waste streams by the use of alkaline magnesium compounds |
US4629616A (en) * | 1983-03-22 | 1986-12-16 | Basf Aktiengesellschaft | Basic chromium aluminum sulfates and their preparation |
EP0122501B1 (en) * | 1983-03-22 | 1987-01-14 | BASF Aktiengesellschaft | Process for the production of basic chromium-aluminium sulfates |
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