Description

Ammonium Gold Sulphite is a specialized inorganic coordination compound containing gold in a lower oxidation state, stabilized by sulphite ligands. This compound is valued for its role as a stable and soluble source of monovalent gold, which is critical for controlled deposition processes. It is primarily utilized in advanced material synthesis and precision electroplating applications within the electronics, nanotechnology, and specialty chemical manufacturing sectors.

Application

• Electronics Manufacturing: As a key electrolyte component for selective and immersion gold plating of connectors, contacts, and printed circuit boards (PCBs).
• Nanotechnology & Catalysis: Serves as a precursor for synthesizing gold nanoparticles and nanostructures with controlled size and morphology.
• Surface Finishing: Used in decorative and functional gold plating for jewelry, optical components, and medical devices.
• Chemical Vapor Deposition (CVD): Acts as a source material for depositing thin, high-purity gold films in semiconductor fabrication.
• Research & Development: Employed in academic and industrial labs for developing new gold-based materials and catalytic processes.
• Specialty Reagent: Used in analytical chemistry and as a reagent for specific organic synthesis reactions.

Basic Information

Product Name	Ammonium Gold Sulphite
CAS No.	94232-38-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Ammonium Gold(I) Sulphite; Gold Ammonium Sulphite; Ammonium Aurous Sulphite; Ammonium Sulfitoaurate(I); Sulfurous acid, gold(1+) ammonium salt; Ammonium disulfitoaurate(I); ATS (Ammonium Thiosulfate alternative for gold plating)
EINECS	Contact for details

Quality Control

Our Ammonium Gold Sulphite is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and performance for its intended industrial applications. Certificates of Analysis (COA) detailing gold content, impurity profiles, and other critical parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at 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 and efficacy.

Specification

Item	Specification
Appearance	Yellow to amber crystalline powder or solution
Identification (IR)	Complies
Assay (Gold Content)	≥ 48.0 %
Purity (HPLC)	≥ 98.0 %
Insoluble Matter	≤ 0.1 %
Chloride (Cl)	≤ 50 ppm
Nitrate (NO3)	≤ 100 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.