Electro Plating, High-Purity Solvents

Dibenzene Sulfonimide (BBI)

Dibenzene sulfonimide, identified by CAS number 2618-96-4 and often abbreviated as BBI, is a high-performance organosulfur compound predominantly utilized as a primary leveler and brightener in the electroplating industry. Chemically classified as a secondary sulfonamide, this white to off-white crystalline powder is indispensable for nickel plating processes. Its molecular structure provides exceptional stability and reactivity within acidic plating baths, where it functions effectively to refine grain structure. Beyond its primary role in surface finishing, BBI serves as a critical intermediate in organic synthesis for pharmaceuticals and agrochemicals. Its high purity levels ensure minimal interference with electrolyte conductivity, promoting uniform metal deposition across complex geometries. By controlling the crystallization rate during electrodeposition, dibenzene sulfonimide enhances the ductile properties and aesthetic brilliance of the finished nickel layer. As a versatile chemical reagent, it maintains a robust presence in global industrial applications, balancing performance efficiency with consistent chemical reliability for modern manufacturing requirements.

Attributes

Key Features and Benefits

Superior leveling properties ensure exceptionally smooth metal surfaces.
High chemical stability within acidic nickel plating baths prevents decomposition.
Provides outstanding brightening effects, enhancing the aesthetic quality of finished components.
Reduces internal stress in electrodeposited layers, preventing brittleness.
Compatible with secondary brighteners like saccharin for optimized results.
Exceptional purity levels minimize bath contamination and maintenance frequency.
Improves ductility and adhesion of nickel coatings on diverse substrates.
Cost-effective dosage requirements offer high industrial efficiency.
Facilitates uniform thickness across complex part geometries.
Long shelf life and ease of handling during chemical formulation processes.

Specifications

Technical Highlights

Chemical Formula: (C6H5SO2)2NH, representing two phenylsulfonyl groups linked by an imide nitrogen.
Molecular Weight: Approximately 297.35 g/mol, ensuring predictable stoichiometric reactions.
Melting Point: Typically ranges between 153°C and 158°C, indicating high material purity.
Solubility: Soluble in organic solvents such as ethanol and moderately soluble in alkaline solutions.
pH Stability: Remains robust across a wide range of acidic electrolyte environments.
Appearance: Fine white crystalline powder with consistent particle size distribution.
CAS Number: 2618-96-4 for precise regulatory identification.
Low toxicity profile compared to alternative aromatic sulfonimides.
High thermal stability during standard industrial storage.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Primary brightener and leveler in bright nickel plating bath formulations.
Essential intermediate for the synthesis of advanced pharmaceutical active ingredients.
Utilized in agrochemical production for specific pesticide and herbicide derivatives.
Key component in the formulation of high-performance electrolytes for automotive parts.
Applied in the electronics industry for decorative and functional metal coatings.
Used in the manufacturing of specialty polymers and resin additives.
Active reagent in organic laboratory research for imidation reactions.
Component in corrosion inhibitor formulations for industrial metal protection.
Employed in the textile industry for specific dye synthesis industrial processes.