Electro Plating, High-Purity Solvents

N N-Dimethyl-Dithiocarbamylpropyl Sulfonic Acid Sodium Salt (DPS)

N,N-Dimethyl-Dithiocarbamylpropyl Sulfonic Acid Sodium Salt, commonly referred to as DPS, is a specialized organic sulfur compound represented by the CAS registry number 18880-36-9. This chemical serves as a critical brightening agent and leveling component within the electroplating industry, particularly optimized for acidic copper plating processes. Chemically, it is classified as a sodium salt of a dithiocarbamylpropyl sulfonic acid derivative, which provides high solubility in aqueous solutions and excellent stability under operational electrolytic conditions. DPS functions by refining the crystalline structure of deposited metal ions, ensuring a uniform, brilliant finish on complex substrates. Its molecular architecture allows it to interact synergistically with other additives like polyethers and non-ionic surfactants. As a high-purity intermediate, it maintains consistent bath performance while minimizing the formation of detrimental decomposition products. In the contemporary manufacturing landscape, DPS remains an indispensable chemical for achieving high-quality metallic coatings required in decorative and functional electronic components globally. Indeed.

Attributes

Key Features and Benefits

Superior Brightening: Delivers exceptional mirror-like luster in acidic copper electrolytic baths consistently.
Exceptional Leveling: Effectively smooths micro-imperfections on substrate surfaces for uniform thickness and density.
High Solubility: Dissolves rapidly in water, facilitating easy preparation of plating bath concentrates and maintenance.
Excellent Stability: Maintains chemical integrity over wide temperature and current density ranges without degradation.
Synergy: Works harmoniously with polyethers and other common additives to enhance deposition rates significantly.
Purity Standards: Manufactured to high technical grades to reduce organic impurities and plating defects.
Low Consumption: High efficiency allows for lower concentration requirements.

Specifications

Technical Highlights

Molecular Formula: C6H12NNaO3S3, representing a stable dithiocarbamate sulfonic acid sodium salt structure.
Appearance: Typically available as a white to yellowish crystalline powder or concentrated liquid.
Assay: Features a high purity level, usually exceeding 95-98% for optimal industrial performance.
pH Compatibility: Operates effectively within acidic electrolytic environments, specifically optimized for pH values below 2.0.
Electrochemical Action: Acts as a primary brightener by adsorbing onto the cathode to control grain growth.
Decomposition: Low rate of harmful byproduct formation ensures longer bath lifespan and reduced waste management costs.
Handling: Non-flammable and stable under standard storage conditions.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Acidic Copper Plating: Primary use as a brightener in decorative copper plating for automotive parts.
Printed Circuit Boards (PCB): Essential for high-aspect-ratio hole plating and blind via filling in electronics.
Electroforming: Utilized in precision metal fabrication to ensure uniform thickness in complex molds and dies.
Semiconductor Packaging: Applied in advanced packaging processes to provide high-purity copper interconnects and bumps.
Jewelry and Decorative: Enhances the aesthetic appeal of consumer goods through brilliant, mirror-finish metallic coatings.
Aerospace Components: Used for functional copper layers requiring high conductivity and surface uniformity in harsh environments.