Electro Plating, High-Purity Solvents

3 Benzothiazolyl-2-mercapto Propylsulfonate Sodium Salt

3-Benzothiazolyl-2-mercapto Propylsulfonate Sodium Salt, registered under CAS number 49625-94-7, is a high-performance organosulfur compound extensively utilized as a primary additive in the electroplating industry. Characterized by its unique molecular structure involving a benzothiazole moiety coupled with a propylsulfonate sodium salt group, this chemical acts as an essential grain refiner and brightening agent. It is specifically designed for acidic copper plating baths where it facilitates the deposition of smooth, high-luster copper layers on various substrates. The compound operates by adsorbing onto the cathode surface, effectively regulating the electrocrystallization process to ensure uniform metal distribution. Its superior solubility and chemical stability make it a preferred choice for advanced PCB manufacturing and decorative metal finishing. By minimizing internal stress within the plated copper film and enhancing the brightness across high and low current density areas, this specialized sulfonate salt ensures structural integrity and aesthetic excellence in critical electrochemical applications worldwide

Attributes

Key Features and Benefits

Exceptional solubility in acidic aqueous environments ensures rapid bath integration.
Provides superior leveling properties for smooth surfaces even on complex geometries.
Significantly enhances the brightness of copper deposits across wide current density ranges.
Acts as an effective grain refiner to prevent dendritic growth during plating.
Low volatility and high thermal stability ensure prolonged bath life and reliability.
Promotes excellent adhesion between the copper layer and various underlying substrate materials.
Minimizes internal tensile stress in the deposited metal to prevent peeling or cracking.
Highly compatible with common non-ionic surfactants used in modern plating formulations.
Ensures high-purity chemical composition for consistent performance.

Specifications

Technical Highlights

Molecular Formula: C10H10NNaO3S3 specifically optimized for high-conductivity electrolytes.
High purity levels exceeding ninety-eight percent for consistent electrochemical performance.
Synergistic behavior when combined with polyethers and other sulfur-containing brighteners.
Strong adsorption characteristics on the cathode, influencing the cathodic polarization curve effectively.
Stable pH range performance typically observed in sulfuric acid-based copper baths.
Precise molecular weight distribution facilitates controlled diffusion rates within the diffusion layer.
Resistant to oxidative decomposition, maintaining effectiveness during continuous electrolytic processes.
Compatible with high-speed plating equipment requiring rapid electrolyte turnover and high agitation.
Enhances Throwing Power for deep-hole plating in sophisticated electronics and semiconductor packaging technologies.
Always consistent.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Primary brightener in acidic copper plating for high-density interconnect printed circuit boards.
Essential additive for decorative copper finishing on automotive parts and plastic substrates.
Utilized in the manufacture of semiconductor lead frames to ensure precise metal deposition.
Employed in electroforming processes for the production of high-precision metal components.
Key component in copper electrolyte formulations for gravure printing cylinder manufacturing.
Integrated into through-hole and micro-via filling processes for advanced electronics.
Used in jewelry manufacturing for achieving mirror-like finishes on base metal items.
Applicable in the production of functional copper coatings for heat sinks and conductors.
Broadly supports general industrial electroplating operations.