Galvanizing process saccharin powder is an industrial-grade electroplating additive tailored for zinc and zinc-alloy plating systems. It functions as a primary brightener and grain refiner, controlling crystal growth, surface morphology, and deposit brightness during electrodeposition.
Technical Specifications
|
Parameter |
Specification |
|
Product Name |
Galvanizing Process Saccharin Powder |
|
Chemical Name |
1,2-Benzisothiazol-3(2H)-one 1,1-dioxide / Sodium Salt |
|
CAS Number |
Free Form: 81-07-2 / Sodium Form: 128-44-9 |
|
HS Code |
2925.11.0000 |
|
Application |
Acid Zinc, Alkaline Zinc, and Zinc-Nickel Electroplating |
|
Chemical Form |
Free Saccharin or Sodium Saccharin |
|
Physical Form |
White to off-white crystalline powder |
|
Assay (Purity) |
98.0% - 100.5% (Grade specific) |
|
Moisture Content |
Grade specific (Free form: <= 0.5% / Sodium form dihydrate: <= 15.0%) |
|
Particle Size |
Standard 40-80 mesh or customized micronized powder |
|
Heavy Metals |
<= 10 ppm |
|
Packaging |
25 kg fiber drums / Kraft paper bags |
|
Documentation |
COA, SDS, TDS, and REACH status |
Product Characteristics & Applications
Crystal Modification: Adsorbs onto high-energy cathode sites to suppress dendrite formation, reduce crystallite size, and yield smooth, low-stress coatings.
Form Flexibility: Available in free saccharin for low-sodium systems and sodium saccharin for high water-solubility requirements.
Target Applications: Widely utilized in acid zinc, alkaline non-cyanide zinc, zinc-nickel alloy plating, and general metal finishing for fasteners and hardware.
Applications
Acid Zinc Electroplating: Acts as a primary organic additive to refine grain structure and improve brightness across medium-to-high current density zones.
Zinc-Nickel Electroplating: Serves as a critical stress-reducer and deposit refiner in high-corrosion-resistance alloy plating used in automotive and aerospace parts.
Metal Finishing & Surface Treatment: Used in proprietary additive packages for plating fasteners, stampings, hardware, and structural steel components.
Chemical Blending & Formulations: Formulators integrate saccharin into comprehensive additive packages alongside carrier brighteners, wetting agents, and grain refiners.
Comprehensive Quality Checks:
Chemical Identity & Assay: Verified by HPLC/titration against batch acceptance limits.
Moisture Control: Strictly monitored to ensure caking resistance and storage stability.
Dissolution & Clarity Test: Checked for complete solubility with no visible un-dissolved particulate matter.
Impurity Profiling: Heavy metals and organic impurities are analyzed to protect bath longevity.
Traceability: Every drum/bag bears a lot number linked to raw material records, processing conditions, and final COA test results.
FAQ
Q: What is the primary function of this product?
A: It acts as an organic primary brightener and grain refiner to control crystal structure, minimize internal stress, and enhance deposit appearance in zinc plating.
Q: How do I choose between free saccharin and sodium saccharin?
A: Sodium saccharin offers high water solubility for easy stock solution preparation, whereas free saccharin is chosen for sodium-sensitive formulations.
Q: Can this additive be used in zinc-nickel alloy plating?
A: Yes, it is effective in zinc-nickel systems to improve corrosion resistance, reduce deposit stress, and refine grain morphology.
Q: What documents are provided with commercial orders?
A: Every shipment includes a batch-specific COA, GHS-compliant SDS, TDS, and necessary customs documentation.
Q: Is sample testing available before placing a bulk order?
A: Yes, laboratory evaluation samples and technical data are provided to support Hull Cell testing and bath compatibility verification.
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