Description

Bis-(Sodium Sulfopropyl)-Disulfide is an organosulfur compound widely utilized as a key intermediate and additive in various industrial chemical synthesis processes. Its primary commercial value lies in its role as a brightener and leveling agent in electroplating baths, significantly enhancing the quality and performance of metal coatings. This product is essential for manufacturers in the electronics, automotive, and surface finishing industries seeking to improve the durability and appearance of plated components.

Application

• Primary brightener and leveling agent in acid copper electroplating baths for printed circuit boards (PCBs) and semiconductor packaging.
• Critical additive in electrolytic copper foil production for lithium-ion battery current collectors.
• Functional intermediate in the synthesis of specialty surfactants and wetting agents.
• Component in electroless plating formulations for uniform metal deposition on non-conductive substrates.
• Used in metal finishing processes for decorative hardware, automotive trim, and consumer electronics.
• Research and development chemical for novel organosulfur compound synthesis.

Basic Information

Product Name	Bis-(Sodium Sulfopropyl)-Disulfide
CAS No.	27206-35-5
Molecular Formula	C6H12Na2O6S4
Molecular Weight	354.38 g/mol
Synonyms	3,3'-Dithiobis(1-propanesulfonic acid) disodium salt; SPS (Sodium 3,3'-Dithiodipropanesulfonate); Disodium 3,3'-dithiobis(propanesulfonate); Bis(3-sulfopropyl) disulfide disodium salt; 3,3'-Dithiodipropanesulfonic Acid Disodium Salt; Sodium 3,3'-dithiodipropylsulfonate; Electroplating Brightener SPS; SPS Additive
EINECS	Contact for details

Quality Control

Our Bis-(Sodium Sulfopropyl)-Disulfide is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity and performance, meeting the exacting standards required for high-end electroplating and chemical synthesis. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are provided with each shipment to guarantee supply reliability and product consistency for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
pH (5% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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