Description

Trisodium Bis[Thiosulphato(2-)-O,S]Aurate(3-) is a water-soluble gold complex, widely recognized as sodium gold thiosulfate. This compound serves as a critical and stable source of gold(I) for various advanced industrial and research applications, offering superior handling characteristics compared to other gold salts. It is primarily utilized in sectors requiring precise gold deposition or catalysis, such as electronics manufacturing, nanotechnology, and specialized chemical synthesis. Its consistent quality and reliable performance make it an essential material for high-tech B2B supply chains.

Application

• Electroless Gold Plating: A key precursor for depositing thin, uniform, and highly conductive gold films on semiconductors, connectors, and printed circuit boards (PCBs).
• Nanoparticle Synthesis: Used as a gold source for the controlled preparation of gold nanoparticles (AuNPs) with specific sizes and shapes for catalysis, sensing, and biomedical research.
• Catalysis: Employed as a catalyst or catalyst precursor in organic synthesis and industrial chemical processes.
• Glass & Ceramic Pigmentation: Imparts a ruby red color (cranberry glass) or gold luster to specialty glass, ceramics, and artistic enamels.
• Photographic Industry: Historically used in gold toning processes to enhance the stability, tonal range, and appearance of photographic prints.
• Medical & Diagnostic Research: Serves as a starting material for developing gold-based contrast agents, therapeutic compounds, and biosensors.
• Surface Modification: Facilitates the functionalization of surfaces with gold for enhanced biocompatibility, conductivity, or chemical reactivity.

Basic Information

Product Name	Trisodium Bis[Thiosulphato(2-)-O,S]Aurate(3-)
CAS No.	15283-45-1
Molecular Formula	AuNa3O6S4
Molecular Weight	490.21 g/mol
Synonyms	Sodium Gold Thiosulfate; Gold Sodium Thiosulfate; Auric Sodium Thiosulfate; Sodium Aurothiosulfate; Trisodium Dithiosulphatoaurate(I); Sodium Aurothiosulphate; Gold(I) Sodium Thiosulfate; Disodium Gold Thiosulfate (common trade variant)
EINECS	Contact for details

Quality Control

Our Trisodium Bis[Thiosulphato(2-)-O,S]Aurate(3-) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for gold content, purity, and solubility. A comprehensive Certificate of Analysis (COA) detailing assay results, impurity profiles, and physical characteristics is provided with every shipment to guarantee traceability and compliance with your technical requirements.

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 (store away from light) and hygroscopic (moisture-sensitive). Keep away from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to pale yellow crystalline powder
Identification (IR)	Conforms to standard
Assay (Au content)	≥ 40.0 %
Purity (HPLC)	≥ 98.0 %
Solubility (in Water)	Clear, colorless solution
pH (5% solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm
Chloride (Cl)	≤ 0.1 %
Sulfate (SO4)	≤ 0.5 %

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