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- 5.400
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- 0-0.08Pa at 190-200℃
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- insoluble in H2O, dilute acid solutions
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- ??? H2O, ?? ?, ?? HCl [MER06]
- InChI
- InChI=1S/2Cr.Cu.4O
- InChIKey
- FULFYAFFAGNFJM-UHFFFAOYSA-N
- SMILES
- O([Cr]=O)[Cr]=O.O=[Cu]
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| ??? ?? | O,Xi | ||
|---|---|---|---|
| ?? ???? ?? | 8-37-36/37/38-20/21 | ||
| ????? | 17-24/25-23 | ||
| ????(UN No.) | UN 1479 5.1/PG 2 | ||
| WGK ?? | 3 | ||
| TSCA | TSCA listed | ||
| HS ?? | 28415000 | ||
| ???? ?? | KE-08924 |
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copper chromite is a black, tetragonal powder that is insoluble in water. It is prepared by the heating to 400°C of copper(II) chromate(VI).??? ??
Grayish-black tetragonal crystals; density 5.4 g/cm3. When heated to elevated temperatures (above 900°C) copper(II) chromite decomposes to cupric chromate(II), CuCrO2 and chromium (VI) oxide, CrO3. Copper(II) chromite is insoluble in water and dilute acids.??
Copper chromite is used as a hydrogenation catalyst.?? ??
Copper chromite is primarily used as a catalyst forhydrogenation reactions because of its ability to hydrogenate functional groupsin aliphatic and aromatic compounds selectively. Industrially, copper chromiteis used to reduce furfural to furfuryl alcohol and butyraldehyde to 1-butanol,partially reduce conjugated dienes to monoenes, and selectively reduce carbonylgroups in vegetable oils. This CuCr catalyst is studied for a variety ofcatalytic applications including converting the hydrogenolysis of cellulose.It is also used as a catalyst for combustion to help control burn rate and as alight-absorbing pigment.?? ??
Copper(II) chromite is obtained by heating copper chromate, CuCrO4 at 400°C. The Adkin catalyst, a mixture of copper oxide and copper chromite, is prepared by mixing aqueous solutions of copper nitrate, sodium dichromate and ammonium hydroxide; the orange precipitate of copper ammonium chromate formed is dried and then heated below 400°C.?? ??
Copper chromite is a black powder and inorganic pigment thatadopts a spinel crystal structure. It can be made by the high-temperaturecalcination of copper(II) oxide and chromium(III) oxide or the thermaldecomposition of copper chromate, which evolves oxygen at higher temperaturesand decomposes to copper chromite.?????? ?? ?? ? ???
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CHROMIC MIXTURE
Copper chromite
Chromate, Ion chromatography standard solution, Specpure, CrO4ˉ2 1000μg/ml
Cupric phosphate trihydrate
CUPRIC CHROMATE
COPPER CHROMITE CATALYST
CHROMIUM (III) OXIDE HYDRATE