1303-52-2
Gold(III) hydroxide
CAS: 1303-52-2
Molecular Formula: AuH3O3
1303-52-2 - Names and Identifiers
| Name | Gold(III) hydroxide |
| Synonyms | Gold Hydroxide GOLD HYDROXIDE gold trihydrate Gold trihydroxide gold(1+) hydroxide Gold(III) hydroxide GOLD(III) HYDROXIDE goldhydroxide(au(oh)3) |
| CAS | 1303-52-2 |
| EINECS | 215-120-0 |
| InChI | InChI=1/Au.H2O/h;1H2/q+1;/p-1 |
1303-52-2 - Physico-chemical Properties
| Molecular Formula | AuH3O3 |
| Molar Mass | 247.99 |
| Melting Point | decomposes at ~100℃ [LID94] |
| Water Solubility | Insoluble in water. |
| Appearance | Powder |
| Solubility Product Constant(Ksp) | pKsp: 45.26 |
| Merck | 14,4523 |
| Storage Condition | Room Temprature |
| Stability | Stability May decompose upon exposure to light. Incompatible with strong oxidizing agents. |
| Sensitive | Light Sensitive |
| MDL | MFCD00046173 |
1303-52-2 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 3 |
| TSCA | Yes |
1303-52-2 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Overview | Gold hydroxide usually refers to the yellow-brown solid precipitate generated by the reaction of a solution containing Au3 (such as a gold trichloride solution) and alkali (such as sodium hydroxide), Insoluble in water, belonging to amphoteric hydroxides, soluble in most acids, dissolve in excess strong alkali solution to form complex hydroxide ([Au(OH)4]-ion). Decompose to generate gold trioxide when it is slightly heated. Heat to 140~150 ℃ and dehydrate to become gold oxide. It is divided into gold and oxygen at 250 ℃. It is easy to reduce to metal gold and is used for gold plating, ceramic coloring, etc. Under phosphorus pentoxide drying, gold (III) hydroxide produces AuO(OH). 140 ℃ loses water to obtain digold trioxide. |
Last Update：2024-04-10 22:29:15
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