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Thermo Scientific™ tetra-Chloroauric(III) acid trihydrate ACS
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Specifications:
| Application | Analytical Chemistry | ||
| Storage Temperature | 2-8°C | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | Thermo Fisher Scientific™, thermo Scientific | ||
| Product Grade | Analytical grade | Formula | HAuCl₄·3H₂O |
Thermo Scientific™ Tetra-Chloroauric(III) Acid Trihydrate (HAuCl₄·3H₂O), ACS grade, is a high-purity gold(III) reagent used extensively in gold nanoparticle synthesis, catalyst preparation, electroplating, analytical chemistry, and advanced materials research. With a guaranteed minimum 49.0% Au assay, low levels of insoluble matter, and tightly controlled metal impurities, this gold salt provides exceptional reliability for high-precision experimental and industrial applications.
Supplied as a yellow to orange crystalline powder or chunks (occasionally with a brown hue), the reagent exhibits excellent solubility and reactivity, making it ideal for gold ion chemistry, plasmonic material development, and advanced nanofabrication processes.
Key Features & Benefits
ACS-Grade Purity for High-Precision Applications
- Assay ≥49.0% Au, ensuring accurate stoichiometric conversions and reproducible synthesis results.
-
Low inorganic contamination:
- Insoluble matter ≤0.1%
- Alkali metals & other metals (as sulfate) ≤0.2%
Premium Gold(III) Precursor
Ideal for:
- Gold nanoparticle synthesis (colloids, rods, anisotropic structures)
- Catalysis (supported Au catalysts, oxidation catalysts)
- Electroplating and metallisation
- Thin film and nanostructure formation
- Analytical gold standard solutions
- Redox and speciation chemistry
Stable and Easy to Handle
- Melting point: 30 °C
- Stored under refrigerated conditions for maximum stability
- Provided in solid form for precise weighing and formulation
Chemical & Regulatory Information
| Parameter | Details |
|---|---|
| Chemical Name | Tetra-Chloroauric(III) Acid Trihydrate |
| Synonyms | Gold(III) chloride trihydrate; Gold chloride hydrate; Hydrogen tetrachloroaurate(III) trihydrate |
| CAS Number | 16961-25-4 |
| Chemical Formula | HAuCl₄·3H₂O |
| Molecular Weight | 393.83 g/mol |
| MDL Number | MFCD00149904 |
| EINECS | 240-948-4 |
| Density | 3.9 g/cm³ (20 °C) |
| Melting Point | 30 °C |
| Storage Temperature | Refrigerator (2–8 °C) |
| UN Number | 3260 |
| ADR Classification | 8, II (Corrosive solid) |
Physical Appearance
- Color: Yellow to orange
- Form: Powder and/or crystalline chunks
- Note: May display a slight brown hue depending on hydration and crystallisation conditions
Analytical Specifications
| Test | Specification |
|---|---|
| Assay (Au) | ≥49.0% |
| Insoluble Matter (10% in ether) | ≤0.1% |
| Alkali & Other Metals (as sulfate) | ≤0.2% |
Applications
1. Nanotechnology
- Synthesis of AuNPs via Turkevich, Brust-Schiffrin, and seed-mediated routes
- Gold nanorods, nanoshells, nanoclusters
- Plasmonic and photonic material development
2. Catalysis Research
- Gold-based oxidation catalysts
- Catalytic nanoparticle deposition
- Preparation of Au-containing supports (TiO₂, SiO₂, Al₂O₃, CNTs, etc.)
3. Analytical & Preparative Chemistry
- Standard gold solutions
- Quantitative gold analysis
- Redox chemistry and speciation studies
4. Electronic Materials & Surface Engineering
- Gold electroplating baths
- Conductive and reflective coatings
- Metallic thin films
Ordering Information
| Catalog Number | Pack Size | Container Type |
|---|---|---|
| 411070010 | 1 g | Glass bottle |
| 411070050 | 5 g | Glass bottle |
| 411070250 | 25 g | Glass bottle |
Thermo Scientific™ Tetra-Chloroauric(III) Acid Trihydrate (ACS grade) is a high-purity, reliable gold precursor ideal for nanoparticle production, analytical chemistry, catalysis, and advanced materials development. With stringent ACS-level specifications and outstanding solubility and reactivity, it is a preferred choice for researchers working with gold-based compounds and nanomaterials.
- Pack Size: 1g 5g 25g