Description

Chloroauric Acid is a key inorganic gold compound, typically supplied as a hygroscopic, yellow to orange crystalline solid. This material serves as a fundamental precursor for the synthesis of gold nanoparticles, catalysts, and other gold-based compounds, offering a reliable source of gold(III) ions. It is essential for manufacturers and researchers in the electronics, nanotechnology, and specialty chemical sectors who require high-purity gold intermediates.

Application

• Gold Nanoparticle Synthesis: A primary starting material for producing colloidal gold nanoparticles used in diagnostics, sensors, and catalysis.
• Electroplating & Surface Finishing: Used in specialized gold electroplating baths for electronic components, connectors, and jewelry to provide corrosion-resistant, conductive coatings.
• Catalyst Preparation: Serves as a precursor for heterogeneous and homogeneous gold catalysts employed in chemical synthesis and pollution control systems.
• Glass & Ceramic Coloring: Imparts a rich ruby-red color (cranberry glass) to specialty glassware and ceramic glazes.
• Analytical Reagent: Utilized in laboratory settings for analytical chemistry procedures and as a standard in certain test methods.
• Materials Research: Fundamental for R&D in developing novel gold-containing materials, thin films, and conductive inks for printed electronics.

Basic Information

Product Name	Chloroauric Acid
CAS No.	16903-35-8
Molecular Formula	HAuCl4·xH2O
Molecular Weight	393.83 (Anhydrous basis)
Synonyms	Hydrogen tetrachloroaurate(III); Tetrachloroauric(III) acid; Auric chloride; Gold(III) chloride hydrate; Gold chloride acid; Gold acid chloride; HAuCl4; Chloroauric acid hydrate
EINECS	240-948-4

Quality Control

Our Chloroauric Acid is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including assay (gold content), impurity profiling, and physical characterization, to ensure it meets the high standards required for advanced applications. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic and strong acid nature, the container must be kept tightly sealed to prevent moisture absorption and degradation. Keep away from incompatible materials such as strong bases and organic solvents.

Specification

Item	Specification
Appearance	Yellow to orange crystalline solid
Identification (IR)	Conforms
Assay (Au content)	≥ 48.0 %
Solubility (in water)	Clear, yellow solution
Impurities (ICP-OES)	As per customer grade requirement

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.