GB397435A - Process for the preparation of monochromates and dichromates - Google Patents
Process for the preparation of monochromates and dichromatesInfo
- Publication number
- GB397435A GB397435A GB12339/33A GB1233933A GB397435A GB 397435 A GB397435 A GB 397435A GB 12339/33 A GB12339/33 A GB 12339/33A GB 1233933 A GB1233933 A GB 1233933A GB 397435 A GB397435 A GB 397435A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali
- calcium carbonate
- oxygen
- dichromates
- phosphate
- 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
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 10
- 239000003513 alkali Substances 0.000 abstract 7
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 5
- 239000001488 sodium phosphate Substances 0.000 abstract 5
- 239000000126 substance Substances 0.000 abstract 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 4
- 238000004519 manufacturing process Methods 0.000 abstract 4
- 229910052760 oxygen Inorganic materials 0.000 abstract 4
- 239000001301 oxygen Substances 0.000 abstract 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 abstract 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 abstract 3
- 235000010216 calcium carbonate Nutrition 0.000 abstract 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 abstract 2
- 239000007800 oxidant agent Substances 0.000 abstract 2
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 abstract 2
- 235000010333 potassium nitrate Nutrition 0.000 abstract 2
- 239000004323 potassium nitrate Substances 0.000 abstract 2
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract 2
- 235000011152 sodium sulphate Nutrition 0.000 abstract 2
- 229910000406 trisodium phosphate Inorganic materials 0.000 abstract 2
- 235000019801 trisodium phosphate Nutrition 0.000 abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 abstract 1
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 239000004115 Sodium Silicate Substances 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract 1
- 150000001242 acetic acid derivatives Chemical class 0.000 abstract 1
- 150000004645 aluminates Chemical class 0.000 abstract 1
- 239000012736 aqueous medium Substances 0.000 abstract 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 150000001805 chlorine compounds Chemical class 0.000 abstract 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- 229910000423 chromium oxide Inorganic materials 0.000 abstract 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 abstract 1
- 229910000397 disodium phosphate Inorganic materials 0.000 abstract 1
- 235000019800 disodium phosphate Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 150000004679 hydroxides Chemical class 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 abstract 1
- 235000019799 monosodium phosphate Nutrition 0.000 abstract 1
- 150000002823 nitrates Chemical class 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 235000021317 phosphate Nutrition 0.000 abstract 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 abstract 1
- 235000011118 potassium hydroxide Nutrition 0.000 abstract 1
- 150000004760 silicates Chemical class 0.000 abstract 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 abstract 1
- 229910000162 sodium phosphate Inorganic materials 0.000 abstract 1
- 235000011008 sodium phosphates Nutrition 0.000 abstract 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052911 sodium silicate Inorganic materials 0.000 abstract 1
- 235000019794 sodium silicate Nutrition 0.000 abstract 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/14—Chromates; Bichromates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
In the manufacture of chromates or dichromates by oxidizing chromium oxide or hydroxide or chromium ores in an aqueous medium at temperatures above 100 DEG C. under pressure any other substances capable of yielding alkali or alkaline-earth during the reaction are used in place of or together with the alkali or alkaline-earth hydroxides, carbonates, or bicarbonates previously used. In the manufacture of dichromates, the alkali &c. yielding substance may also replace the monochromate previously used. The alkali &c. yielding substance may act also as oxidizing agent during the reaction, and mixtures of substances which yield alkali only and which both yield alkali and act as oxidizing agents may be employed. Specified substances which may be used are alkali or alkaline-earth sulphates, chlorides, phosphates, acetates, silicates, aluminates, nitrates, chlorates, persalts, manganates, and permanganates. In examples relating to the production of dichromates at 280-290 DEG C. in the presence of oxygen, anhydrous sodium sulphate with or without calcium carbonate, trisodium phosphate, sodium silicate, and potassium nitrate with calcium carbonate, are used. Monosodium phosphate and calcium nitrate respectively are also obtained when sodium phosphate and potassium nitrate with calcium carbonate are employed. When using potassium chlorate with calcium carbonate and with or without caustic potash, no external supply of oxygen is needed. In examples relating to the production of monochromates at 150-350 DEG C. in the presence of oxygen, anhydrous sodium sulphate with calcium carbonate or lime, or trisodium phosphate may be used, disodium phosphate being obtained also in the latter case. When using potassium chlorate with magnesium oxide at a temperature of 290-300 DEG C. no external supply of oxygen is needed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR397435X | 1932-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB397435A true GB397435A (en) | 1933-08-24 |
Family
ID=8896537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12339/33A Expired GB397435A (en) | 1932-05-26 | 1933-04-27 | Process for the preparation of monochromates and dichromates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB397435A (en) |
-
1933
- 1933-04-27 GB GB12339/33A patent/GB397435A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB397435A (en) | Process for the preparation of monochromates and dichromates | |
| GB397434A (en) | Improvements in the preparation of chromates and dichromates | |
| GB364361A (en) | Process for the manufacture of chromates and dichromates | |
| US2402103A (en) | Production of chromium compounds | |
| GB836928A (en) | Improvements in or relating to the manufacture of alkali metal aluminium fluorides | |
| US1565300A (en) | Process for reducing sulphates and the like | |
| GB633008A (en) | A process for the treatment of complex lithium compounds | |
| GB460410A (en) | Improvements in and relating to the treatment of silicate ores | |
| GB103696A (en) | Improvements in the Manufacture of Chromates. | |
| US1951160A (en) | Manufacture of magnesium chloride | |
| GB472605A (en) | Improvements in or relating to the production of coloured titanium pigments | |
| GB414160A (en) | Improvements in the manufacture and production of chrome pigments | |
| US2403940A (en) | Production of magnesium thiosulphate and magnesium oxide from dolomite | |
| GB301022A (en) | Process for the production of calcined phosphates | |
| GB460376A (en) | Improvements in or relating to the production of chlorine dioxide | |
| US2742484A (en) | beta-sulfonation of anthraquinone containing mercury | |
| GB371059A (en) | Process for the manufacture of dichromates | |
| GB477744A (en) | Process for the manufacture of alkali metal and magnesium salts | |
| GB488018A (en) | Improvements in and relating to the manufacture of colourless phosphoric acid | |
| US843566A (en) | Process of reducing indigo coloring-matters. | |
| US1243762A (en) | Process of producing lead pigments. | |
| GB405165A (en) | Process for the production of alkali phosphates | |
| GB187636A (en) | Improvements in the manufacture of chromium compounds | |
| US36599A (en) | Improved blasting-powder | |
| GB580181A (en) | Process for the production of chromic hydroxide |