Chemical nature
|
Chemical name
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Bis-(Sodium Sulfopropyl)-Disulfide |
| Molecular formula | C6H12Na2 O6S4 |
| Molecular weight | 354.4 |
| CAS No. | 27206-35-5 |
Properties
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Physical form
|
White to yellowish powder |
| Concentration (%) | ≥90% or ≥95.0 |
| PH | 2.0~6.0 |
| Solubility(20℃) | 38 % water solution is transparent and clear |
Application
SPS-95 is used as a brightener and grain refiner in copper electroplating baths at a concentration of 10-50mg/L.
Packing
25kg/drum, stored in cool and dry place.
Chemical Profile and Purity
Bis‑(Sodium Sulfopropyl)‑Disulfide, abbreviated as SPS, has CAS number 27206‑35‑5, molecular formula C₆H₁₂Na₂O₆S₄, molecular weight ~354.4 g/mol. Appearance is a white to light yellow powder (or crystalline solid) with a typical purity in the range of 90‑95%. It is soluble in water (e.g., about 38% aqueous solution becomes transparent and clear). This chemical profile supports precision needs for coating chemicals and chemical coating applications where brightness, grain structure, and consistency in copper electroplating are required. The powder form allows dosage control and mixing flexibility.
Physical Behavior and Handling Guidelines
The product is a powder to crystalline solid. It dissolves in water; dissolution at ambient temperature yields clear solutions in typical concentrations. Solution pH of a 38% aqueous solution falls in a range of about pH 3.0‑7.0. It should be stored in a cool, dry place with standard export packaging (e.g., drums) to avoid moisture uptake. Delivery time typically 15‑25 working days, with minimum order quantity negotiable. These handling, storage, and logistics details are relevant to industrial coating supplier operations and users of coating production chemicals who need supply assurance and consistent physical properties.
Functionality in Coating Processes
SPS is used primarily as a brightener and grain refiner in acid copper electroplating baths. Typical effective dosage is 10‑50 mg/L. When applied, it improves brightness of copper deposits and refines the crystal structure of the copper coating. It is compatible with non‑ionic surfactants, polymeric amines, dyes, and other sulfur‑containing compounds. It is used for decorative and functional copper coatings, including for printed circuit boards and copper foil applications. These functional characteristics make it relevant for paint chemicals suppliers seeking additives for decorative finishes or functional copper layers in chemical coating systems.
Product Advantages
Improved Appearance and Deposit Quality
At usage levels around 10–50 mg/L in copper plating baths, SPS enhances brightness and provides fine grain structure. For paint chemicals suppliers and coating chemicals formulators, using SPS helps produce smoother, more reflective copper surfaces, making decorative and functional coatings more uniform and visually appealing. The consistent grain structure also contributes to reduced surface roughness and improved uniformity across large surface areas, which is important for both visual standards and downstream process adhesion.
Broad Compatibility with Additives
SPS works alongside surfactants, polyamines, dyes, and other sulfur-based additives (e.g. DPS or EXP2887) in electroplating formulations. This compatibility allows coating production chemicals developers to tailor bath chemistry without severe adverse interactions, enabling optimized performance in acid copper plating scenarios. It can be integrated into formulations for complex multilayer coating systems or additive packages where component interaction must remain stable over time or under continuous operation.
Reliable Supply and Handling
With purities ≥90–95%, powder form, typical packaging like export drums, and negotiable minimums, SPS from Fengfan offers predictable supply. The 15–25 working day delivery window supports planning for industrial coating supplier operations, helping reduce risks of delays or inconsistent input quality that could affect plating uniformity or batch yields. Additionally, the material's long shelf life under proper storage conditions adds to its reliability, making it a suitable inventory item for users operating under stringent quality control regimes.
Use Scenarios
Decorative Copper Finishes
In decorative electroplating (e.g., decorative copper coatings on visible parts or surfaces), SPS is used to improve brightness and luster. It refines grain structure so coatings have better reflectivity and fewer defects. Paint chemicals suppliers who produce formulation additives for decorative finishes will find SPS valuable for these purposes. Its consistent behavior in both small-scale and continuous plating operations makes it suitable for high-volume decorative finishing applications where uniformity and aesthetics directly affect product value.
Printed Circuit Board (PCB) Copper Plating
PCBs require copper tracks with precise deposition, smooth morphology, and reliable electrical conductivity. SPS addition in acid copper baths helps ensure uniform copper deposit and grain refinement, contributing to lower profile, high-quality copper foils. This is a typical requirement for coating chemicals employed in electronics. The role of SPS in enhancing mechanical strength and reducing internal stress of plated layers further supports its application in multilayer PCBs and high-density interconnect (HDI) manufacturing lines.
Functional Copper Coatings for Industrial Components
Beyond aesthetics, copper coatings are used for corrosion protection, heat conduction, or conductivity. SPS assists in forming coatings with adequate grain structure and uniform surface. For coating production chemicals manufacturers supplying industrial components, using SPS enhances functional performance in these coatings. In environments requiring thermal stability, improved surface hardness, or electrical connectivity, consistent use of SPS as a plating aid supports predictable, repeatable performance across large production batches.
About Us
Fengfan is a fine chemicals enterprise with long‑standing engagement in specialty chemical intermediates and plating additives. The company supplies products such as SPS (Bis‑(Sodium Sulfopropyl)‑Disulfide), sultones, electrolyte additives, and other chemical intermediates. Its markets include copper electroplating, battery materials, pharmaceutical applications, and coating sectors. Fengfan serves paint chemicals suppliers and industrial coating supplier customers globally. It operates with export standard packaging, negotiable order volumes, and delivery lead times typical of 15‑25 working days. Quality assurance includes specifications for purity, appearance, and solubility, ensuring its coating chemicals meet industrial requirements.
FAQ
What is the purity of SPS supplied by Fengfan?
Purity is in the range of 90‑95% for standard grade SPS, suitable for coating chemicals and additive use.
What form does the product take and what is its appearance?
It is offered as a white to light yellow powder or crystalline solid.
In what concentration is SPS effective in copper plating baths?
Typical effective concentration is 10‑50 mg/L for brightening and grain refinement in copper electroplating.
What is the molecular formula and molecular weight of SPS?
The molecular formula is C₆H₁₂Na₂O₆S₄, and molecular weight is approximately 354.4 g/mol.
How is SPS packaged and what is typical delivery time?
Standard export packaging (such as drums), with delivery lead time approximately 15‑25 working days, minimum order quantity negotiable.
Secure your supply of SPS brightener from Fengfan if you are a paint chemicals suppliers or industrial coating supplier seeking reliable electroplating additives now!
