1303-58-8
Gold(III) oxide
CAS: 1303-58-8
Molecular Formula: Au2O3
1303-58-8 - Names and Identifiers
| Name | Gold(III) oxide |
| Synonyms | GOLD OXIDE Auric oxide Gold oxide Gold trioxide digold trioxide gold(+3) cation Auric hydroxide Gold(III) oxide GOLD SESQUIOXIDE Gold (III) oxide oxygen(-2) anion oxo-(oxoauriooxy)gold Gold(III) oxide hydrate GoldoxideorangebrownpowderGoldgehalt |
| CAS | 1303-58-8 |
| EINECS | 215-122-1 |
| InChI | InChI=1/2Au.3O/rAu2O3/c3-1-5-2-4 |
1303-58-8 - Physico-chemical Properties
| Molecular Formula | Au2O3 |
| Molar Mass | 441.93 |
| Melting Point | 150°C |
| Water Solubility | Insoluble in water. Soluble in HCl, HNO3 and in NaCN solution. |
| Appearance | Orange to Brown Powder |
| Color | Brown |
| Merck | 14,4524 |
| Storage Condition | Room Temprature |
| Sensitive | Sensitive to light |
| MDL | MFCD00150181 |
| Use | For porcelain glazing, etc |
1303-58-8 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/38 - Irritating to eyes and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | UN 3263 8/PG 3 |
| WGK Germany | 3 |
| TSCA | Yes |
1303-58-8 - Introduction
Insoluble in water, soluble in HCl, HNO3, NaCN solution
Last Update：2022-10-16 17:13:09
1303-58-8 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Overview | Gold oxide is also known as gold oxide. (1) Au2O3 = 441.93, black powder, normal temperature exposure gradually decomposed. When heated to 160 ℃, partial oxygen loss becomes oxidized gold, and completely oxygen loss becomes elemental gold at 250 ℃. (2) Au2O3 3H2O = 496.00 brown powder, heat to 100 ℃ and lose 1.5 molecular crystal water. Both are insoluble in water and can be dissolved in hydrochloric acid, concentrated nitric acid, sodium hydroxide or sodium cyanide solution. Easily reduced to elemental gold by carbon monoxide or hydrogen peroxide. It is prepared by heating gold hydroxide at 140~150 ℃ to constant weight. |
| use | gold oxide can be used as a chemical reagent, and also used for glazing porcelain. Used for porcelain glazing, etc. |
Last Update：2024-04-09 15:16:47
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