VWR Tetra-Chloroauric(III) Acid Trihydrate (HAuCl₄·3H₂O) is a high-purity, AnalaR NORMAPUR® analytical-grade reagent, widely used in gold nanoparticle synthesis, analytical chemistry, catalyst preparation, electroplating, and advanced materials research. This gold(III) chloride hydrate provides a reliable, stable precursor for processes requiring precise gold content, controlled purity, and reproducible reactivity.

With a minimum 48% Au assay, low alkali metal impurities, and compliance with analytical reagent standards, this compound is ideal for research laboratories, nanotechnology facilities, and chemical production environments.

Key Features & Benefits

High-Purity Analytical Reagent (AnalaR NORMAPUR® Grade)

• Minimum 48% gold content ensures consistent stoichiometry in synthesis and analytical workflows.
• Impurities such as alkali metals are tightly controlled (≤0.05%).

Gold(III) Precursor for Advanced Applications

Widely used in:

• Gold nanoparticle synthesis (Citrate, Turkevich, Brust-Schiffrin, seed-mediated growth)
• Preparation of metallic gold catalysts
• Electroplating and metallisation techniques
• Thin-film deposition processes
• Redox reactions and speciation chemistry
• Bioconjugation and biosensor development

Excellent Solubility & Reactivity

• Readily soluble in water, making it ideal for aqueous-phase reduction and gold ion chemistry.
• Well-characterised gold precursor for reproducible particle morphology.

Stable Laboratory Reagent

• Easy to handle crystalline solid (mp: 30 °C).
• Stored at ambient temperature in a sealed plastic bottle.

Chemical & Regulatory Information

Analytical Specification

Applications

1. Nanotechnology & Materials Science

• Synthesis of spherical, rod-shaped, and anisotropic gold nanoparticles (AuNPs)
• Fabrication of plasmonic materials
• Growth of gold thin films and coatings

2. Catalysis

• Preparation of supported Au catalysts
• Redox catalyst precursor for oxidation and hydrogenation reactions

3. Analytical & Preparative Chemistry

• Gold ion solutions for titration and quantitative analysis
• Standard solutions and calibration references

4. Electronics & Surface Engineering

• Conductive coatings
• Gold electroplating baths
• Metallisation of substrates

5. Biochemistry & Biosensors

• Gold conjugates for immunoassays
• Nanoparticle-based detection systems

Ordering Information

VWR Tetra-Chloroauric(III) Acid Trihydrate, AnalaR NORMAPUR®, is a premium-quality gold(III) reagent designed for high-precision analytical use, nanoparticle production, catalysis, and surface engineering. With strict purity controls and excellent solubility, it provides a reliable foundation for advanced chemical and materials research.