| Identification | More | [Name]
Gold hydroxide | [CAS]
1303-52-2 | [Synonyms]
GOLD HYDROXIDE
GOLD(III) HYDROXIDE
Gold trihydroxide
goldhydroxide(au(oh)3)
Gold(III) hydroxide, 99.9%
GOLD (III) HYDROXIDE, 99.9% (CL < 100PPM)
Gold(III) hydroxide, Au 79% min | [EINECS(EC#)]
215-120-0 | [Molecular Formula]
AuH3O3 | [MDL Number]
MFCD00046173 | [Molecular Weight]
247.99 | [MOL File]
1303-52-2.mol |
| Chemical Properties | Back Directory | [Appearance]
solid | [Melting point ]
decomposes at ~100℃ [LID94] | [solubility ]
insoluble in H2O; soluble in acid solutions | [form ]
Powder | [color ]
brown | [Stability:]
Stability May decompose upon exposure to light. Incompatible with strong oxidizing agents. | [Water Solubility ]
Insoluble in water. | [Sensitive ]
Light Sensitive | [Merck ]
14,4523 | [Solubility Product Constant (Ksp)]
pKsp: 45.26 | [CAS DataBase Reference]
1303-52-2(CAS DataBase Reference) | [EPA Substance Registry System]
1303-52-2(EPA Substance) |
| Hazard Information | Back Directory | [Chemical Properties]
solid | [Uses]
In gold-plating solutions; for decorating porcelains. | [Physical properties]
Brown powder; decomposes at 100°C; insoluble in water; soluble in acid. | [Production Methods]
Gold(III) hydroxide is precipitated by mixing aqueous solutions of potassium auric chloride and sodium carbonate:2KAuCl4 + 3Na2CO3 + 3H2O → 2Au(OH)3 + 6NaCl + 2KCl + 3CO2
The product usually contains about three molecules of water of crystallization. It may alternatively be prepared by adding caustic soda solution to sodium auric cyanide: NaAu(CN)4 + 3NaOH → Au(OH)3 + 4NaCN. |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
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 |
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