Description

Ammonium Gold(1+) Sulphite is a specialized inorganic gold complex with the CAS number 71662-32-3. This compound is valued for its role as a stable and soluble source of monovalent gold (Au(I)) in advanced chemical synthesis and surface treatment processes. It is primarily utilized in the electronics, specialty chemical, and precious metal catalyst industries for applications requiring precise gold deposition or incorporation.

Application

• Electroplating & Surface Finishing: A key component in specialized gold electroplating baths for electronic connectors, semiconductors, and decorative finishes, offering excellent throwing power and deposit uniformity.
• Catalyst Synthesis: Serves as a precursor for homogeneous and heterogeneous gold-based catalysts used in organic transformations, such as hydration and oxidation reactions.
• Chemical Vapor Deposition (CVD): Used as a source material for depositing ultra-thin, high-purity gold films in microelectronics and nanotechnology fabrication.
• Pharmaceutical Intermediates: Employed in the research and development of gold-containing therapeutic agents and diagnostic compounds.
• Glass & Ceramic Coloring: Imparts a distinctive ruby-red color to specialty glass, enamels, and ceramic glazes.
• Analytical Reagent: Functions as a standard or reagent in analytical chemistry for the quantitative determination of other substances.
• Photography & Imaging: Used in certain toning and specialized photographic processes.
• Research & Development: A critical material for academic and industrial R&D exploring new gold complexes and their properties.

Basic Information

Product Name	Ammonium Gold(1+) Sulphite
CAS No.	71662-32-3
Molecular Formula	Typically (NH4)3[Au(SO3)2] or related
Molecular Weight	Contact for details
Synonyms	Ammonium Aurous Sulphite; Diammonium Gold(I) Disulfite; Gold Ammonium Sulfite; Ammonium Gold Sulfite Complex; Aurous Ammonium Sulfite; Ammonium Monosulfitoaurate(I); Sulfurous Acid, Gold(1+) Ammonium Salt
EINECS	Contact for details

Quality Control

Our Ammonium Gold(1+) Sulphite is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and compliance with relevant industry standards. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is light-sensitive and easily oxidized; prolonged exposure to air, light, or heat should be avoided to maintain stability. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to pale yellow crystalline powder or solution
Identification (IR)	Conforms to standard
Assay (Au content)	≥ 48.0 %
Purity (HPLC)	≥ 98.0 %
Insolubles	≤ 0.1 %
Chloride (Cl)	≤ 100 ppm
Nitrate (NO3)	≤ 50 ppm
Heavy Metals (as Pb)	≤ 20 ppm

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