Digold trioxide
General description Preparation- Product Name
- Digold trioxide
- CAS No.
- 1303-58-8
- Chemical Name
- Digold trioxide
- Synonyms
- gold(3+);GOLD OXIDE;Auric oxide;Gold trioxide;Auric trioxide;Auric hydroxide;digold trioxide;GOLD(III) OXIDE;GOLD SESQUIOXIDE;goldoxide(au2o3)
- CBNumber
- CB3160457
- Molecular Formula
- Au2O3
- Formula Weight
- 441.93
- MOL File
- 1303-58-8.mol
Digold trioxide Property
- Melting point:
- 150°C
- solubility
- insoluble in H2O; soluble in acid solutions
- form
- Powder
- color
- Brown
- Water Solubility
- Insoluble in water. Soluble in HCl, HNO<sub>3</sub> and in NaCN solution.
- Merck
- 14,4524
- CAS DataBase Reference
- 1303-58-8(CAS DataBase Reference)
- EPA Substance Registry System
- Gold oxide (Au2O3) (1303-58-8)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
- Precautionary statements
-
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P321Specific treatment (see … on this label).
P332+P313IF SKIN irritation occurs: Get medical advice/attention.
P337+P313IF eye irritation persists: Get medical advice/attention.
N-Bromosuccinimide Price
- Product number
- 012161
- Product name
- Gold(III) oxide, Premion?, 99.99% (metals basis), Au 88.6% min
- Packaging
- 1g
- Price
- $245.65
- Updated
- 2024/03/01
- Product number
- 012161
- Product name
- Gold(III) oxide, Premion?, 99.99% (metals basis), Au 88.6% min
- Packaging
- 0.25g
- Price
- $78.2
- Updated
- 2023/06/20
- Product number
- 93-7903
- Product name
- Gold(III) oxide, 99%
- Packaging
- 1g
- Price
- $216
- Updated
- 2024/03/01
- Product number
- 93-7903
- Product name
- Gold(III) oxide, 99%
- Packaging
- 5g
- Price
- $856
- Updated
- 2024/03/01
- Product number
- 012161
- Product name
- Gold(III) oxide, Premion?, 99.99% (metals basis), Au 88.6% min
- Packaging
- 5g
- Price
- $1228
- Updated
- 2023/06/20
Digold trioxide Chemical Properties,Usage,Production
General description
Brown powder; decomposes slowly on exposure to sunlight or by heating at 150°C; begins to release oxygen at 110°C; fully decomposes to metallic gold at 250°C; insoluble in water; soluble in hydrochloric and concentrated nitric acids; also soluble in aqueous solutions of sodiumor potassium cyanide.
Preparation
Gold(III) oxide is prepared by heating gold(III) hydroxide, Au(OH)3 at 130 to 140°C:
Chemical Properties
Brownish-black powder, decomposed by heat.Keep in dark bottle. Soluble in hydrochloric acid; insoluble in water.
Uses
It is used in aerospace and electrochemical applications such as fuel cells in which they exhibit ionic conductivity. It acts as strong reducing agent in redox reactions.
Uses
Gold plating
Purification Methods
The most probable impurities are SO4and Cl-ions. Dissolve it in strong boiling KOH solution (ca 5M) and precipitate (care) with excess of 3N H2SO4. Then shake and centrifuge, resuspend in H2O and repeat the washing several times until free from SO4 and Cl ions. This gives a wet oxide which is dried in air, but decomposes to free gold in sunlight. It is advisable to keep it wet as it decomposes on drying (analyse wet sample). Store it away from light in the presence of H2O vapour. It evolves O2 at 110o. It is insoluble in H2O but soluble in HCl and conc HNO3. [Roseveare & Buehrer J Am Chem Soc 49 1221 1927.]
Digold trioxide Preparation Products And Raw materials
Raw materials
Preparation Products
Digold trioxide Suppliers
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View Lastest Price from Digold trioxide manufacturers
- Product
- Digold trioxide 1303-58-8
- Price
- US $8.80/KG
- Min. Order
- 1KG
- Purity
- 97%-99%
- Supply Ability
- 100kg
- Release date
- 2019-07-12