Electrodeposition bath saccharin additive (saccharin sodium / saccharin soluble, electroplating grade) is a high-purity organic additive designed for electroplating and electrodeposition bath formulations.
Chemical Identity & Key Identifiers
Chemical Name: Saccharin Sodium / 1,2-Benzisothiazol-3(2H)-one 1,1-dioxide sodium salt
CAS Number: 128-44-9 (Dihydrate: 6152-67-2)
EC / EINECS No.: 204-874-6
HS Code: 2925.1100
Molecular Formula: C7H4NNaO3S · 2H2O
Molecular Weight: 241.19 g/mol (Dihydrate)
Physical Appearance: White crystalline powder or granular crystals
Technical Specifications
|
Parameter |
Product Specification |
Test Method / Reference |
|
Product Grade |
Electroplating Grade (Soluble) |
In-house / Customer standard |
|
Appearance |
White crystalline powder or fine granules |
Visual inspection |
|
Assay (Dry Basis) |
>= 99.0% |
Titration / HPLC |
|
Loss on Drying (Moisture) |
<= 15.0% (Dihydrate standard) |
Gravimetric (140°C) |
|
pH (10% Aqueous Solution) |
6.0 – 7.5 |
Potentiometric |
|
Water Solubility |
Fully soluble (>= 200 g/L at 20°C) |
Visual / Solubilization test |
|
Heavy Metals (as Pb) |
<= 10 ppm |
AAS / ICP-OES |
|
Arsenic (As) |
<= 2 ppm |
AAS |
|
Clarity of Solution |
Clear and colorless |
Colorimetric |
|
Batch / Lot Traceability |
Unique lot ID assigned to every production run |
Traceability system |
|
Documentation |
COA, TDS, GHS-compliant SDS available |
Quality Control System |
Applications & Functional Performance
Nickel Electroplating (Watts & Sulfamate Baths)
Internal Stress Reduction: Acts as a Class I additive to neutralize tensile stress, preventing peeling, pitting, or micro-cracking in thick deposits.
Grain Refinement: Promotes fine-grained crystal growth for higher brightness and superior physical ductility.
Synergistic Action: Combines effectively with Class II brighteners (e.g., PPS, BEO) to yield uniform, high-leveling mirror finishes.
Electroplating Chemical Formulation
Designed as a key raw material for proprietary additive formulations, brightener concentrates, and stress-reducing maintenance blends.
Features rapid dissolution behavior and excellent compatibility with common bath surfactants, wetting agents, and primary brighteners.
Industrial Metal Finishing & Functional Coatings
Suitable for both decorative chrome-nickel stacks and functional engineering nickel coatings (e.g., electronics, automotive parts, tooling).
Helps maintain consistent plating performance across varying current density ranges (1 - 6 A/dm²).
Laboratory & Process Optimization
Available in laboratory sample quantities for:
- Stress-measurement studies (e.g., via spiral contractometer or bent strip test)
- Hull cell evaluation and bath formulation optimization.
- Raw material qualification and comparative validation.
Quality Control & Compliance
Raw Material Qualification: Strict testing of raw inputs prior to reaction and crystallization stages.
Controlled Batch Processing: Automated temperature and pH controls during crystallization to ensure uniform particle size and purity.
In-Process Quality Checks: Real-time sampling during purification and drying stages.
Finished Product Testing: Comprehensive testing per batch for assay, moisture, clarity, and trace metals.
Regulatory Compliance: Manufactured under ISO 9001:2015 quality management systems. Fully compliant with EU REACH, RoHS, and GHS SDS standards.
Lot Traceability & Retained Samples: Every batch is linked to its COA and retain samples are archived for a minimum of 24 months.
Packaging, Logistics & Supply Chain
Laboratory Samples: 100 g – 1 kg sealed aluminum foil pouches.
Trial & Standard Orders: 25 kg fiber drums or moisture-barrier PE-lined woven bags.
Bulk Orders: 500 kg / 1000 kg palletized super-sacks with stretch wrap.
FAQ
Q: What is the role of Saccharin Sodium in nickel electroplating?
A: Saccharin Sodium acts as a Class I organic additive and stress reliever. It lowers internal tensile stress in the nickel deposit, improves ductility, and refines crystal structure, preventing plating cracks or flaking.
Q: What is the difference between insoluble saccharin and saccharin sodium for plating?
A: Saccharin Sodium (CAS 128-44-9) is readily soluble in water (>= 200 g/L), making it ideal for direct addition into aqueous plating baths. Insoluble saccharin (CAS 81-07-2) requires pre-dissolution in alkaline solutions before use.
Q: What is the recommended dosage in a Watts nickel bath?
A: Typical concentrations range from 0.5 g/L to 2.0 g/L, depending on current density, bath temperature, and secondary brightener concentration. Exact dosage should be validated using Hull cell tests.
Q: Can you supply REACH-compliant material for the European market?
A: Yes. Regulatory documentation including REACH compliance statements, GHS-compliant SDS, and Certificate of Analysis (COA) are provided with every shipment.
Q: Can we request a sample for laboratory evaluation?
A: Yes. We provide 100 g to 500 g lab evaluation samples along with a batch-specific COA and Technical Data Sheet (TDS).
Hot Tags: electrodeposition bath saccharin additive, China electrodeposition bath saccharin additive manufacturers, suppliers, factory, soluble sweeteners, sweeteners for sweetening jams, sweeteners for sweetening lard, sweeteners for sweetening nut bars, sweeteners for sweetening trail mix, white sugar