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3-s-Isothiuronium Propyl Sulfonate (UPS) is a specialty copper electroplating brightener with the molecular formula C4H10N2O3S2 and CAS number 21668-81-5. The material is supplied as a white powder with a minimum assay of 95 percent, sourced from Wuhan Silworld Chemical Co., Ltd. in China's Hubei province. It functions as a key additive in acid copper electroplating baths, operating in combination with polyethylene glycols and non-ionic surfactants to produce bright, ductile deposits.
The compound belongs to the isothiuronium sulfonate class of organic additives, where the thiuronium group provides sulfur coordination to stabilise the plating interface while the propyl sulfonate chain contributes water solubility and bath compatibility. Typical formulations employ this material at concentrations between 10 and 50 milligrams per litre, depending on current density and agitation parameters. The 95 percent assay grade indicates technical-grade material suitable for industrial electroplating rather than pharmaceutical or food applications, with the remaining five percent comprising synthesis byproducts and moisture.
Primary buyers include electroplating chemical formulators, printed circuit board manufacturers, and automotive plating operations requiring bright copper deposits on complex geometries. The material is also applicable in silver and palladium acid electroplating baths, extending its use to decorative and electronic finishing sectors. Importers should confirm with Wuhan Silworld Chemical Co., Ltd. whether the material is supplied in bulk drums or smaller quantities, and whether certificates of analysis accompany each batch for assay verification.
| CAS Number | 21668-81-5 |
| Molecular Formula | C4H10N2O3S2 |
| Appearance | White powder (source-confirmed) |
| Assay | ≥95% (source-confirmed) |
| Primary Application | Copper electroplating brightener |
| Compatible Bath Types | Acid copper, silver, palladium (typical) |
| Typical Working Concentration | 10 - 50 mg/L (typical industry range) |
| Co-additives Required | Polyethylene glycols, non-ionic surfactants (standard) |
| Solubility | Water-soluble (standard for sulfonate derivatives) |
| Storage Condition | Dry, ambient temperature, sealed container (typical) |
Wuhan Silworld Chemical Co., Ltd. is located at No.198 Jiangjun Road, Wuhan, Hubei province, postal code 430033, China. The supplier holds a harbor trust tier on the platform, with a response rate of 0.00 percent and zero average response hours recorded, indicating no buyer engagement data is currently available. The listing contains no verification of ISO certification, export licence status, or years in operation.
The company's profile does not disclose annual turnover, employee count, R&D facilities, or specific export markets beyond its domestic Chinese address. Buyers should independently verify the supplier's chemical manufacturing licence, hazardous material handling permits, and whether batch testing protocols are in place for this electroplating additive. Direct communication with Wuhan Silworld Chemical Co., Ltd. is essential to confirm export packaging standards, available incoterms, and lead time for international orders.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Before placing an order, verify that Wuhan Silworld Chemical Co., Ltd. holds valid chemical manufacturing and export licences for this CAS-registered substance. Request a current certificate of analysis for a recent production batch, and confirm that the assay method (titration, HPLC, or other) is documented. Check whether the material is classified as hazardous under UN regulations, as this affects shipping documentation and import compliance. Ask for the supplier's hazardous substance registration status in China and whether they have exported to your jurisdiction previously.
Logistics arrangements must be confirmed directly with the supplier. The source provides no lead time, incoterms, or shipping terms. For chemical exports from Wuhan, typical routes involve inland transport to Shanghai or Shenzhen followed by sea freight. Confirm whether the supplier quotes FOB, CIF, or DAP terms, and what their standard payment structure is, letters of credit, or advance payment. Clarify packaging, typically 25 kg fibre drums with polyethylene liners for powder electroplating chemicals, and whether palletisation is included. Insurance for hazardous or sensitive chemicals should be discussed with your freight forwarder.
Quality assurance on receipt should include visual inspection for caking or colour change, verification of batch number against COA, and independent assay testing if your application demands tight specification control. Store the material in a dry, ventilated warehouse away from oxidisers and bases. Retain samples from each batch for traceability. If the material is for critical plating operations, consider conducting Hull cell testing with your specific bath formulation before committing to production quantities, as brightener performance varies with bath chemistry and operating parameters.
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When sourcing 3-S-Isothiuronium Propyl Sulfonate for your business, securing the right balance of quality and cost is essential. Wuhan Silworld Chemical Co., Ltd., a supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $1/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Chemicals & Allied Products sector with strong demand from importing countries worldwide.
Importing 3-S-Isothiuronium Propyl requires careful attention to shipping logistics, customs compliance, and secure payment terms. Wuhan Silworld Chemical Co., Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading B2B marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. Ask the supplier of this 3-S-Isothiuronium Propyl for business registration and quality documents before ordering. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of manufacturers and exporters across 200+ countries. Explore similar products in the Chemicals & Allied Products category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Importing 3-S-Isothiuronium Propyl requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for 3-S-Isothiuronium Propyl Sulfonate from Wuhan Silworld Chemical Co., Ltd. is $1/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Wuhan Silworld Chemical Co., Ltd. through EximNext.
The supplier, Wuhan Silworld Chemical Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for 3-S-Isothiuronium Propyl. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
The HS Code classification for 3-S-Isothiuronium Propyl Sulfonate depends on the specific grade and form. Contact Wuhan Silworld Chemical Co., Ltd. through EximNext for the exact HS Code and customs documentation required for your destination country.
To import 3-S-Isothiuronium Propyl from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Wuhan Silworld Chemical Co., Ltd.. Ensure you have the necessary import licenses for Chemicals & Allied Products products in your destination country.
Open the Wuhan Silworld Chemical Co., Ltd. company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Wuhan Silworld Chemical Co., Ltd. through EximNext.
Wuhan Silworld Chemical Co., Ltd. offers 3-S-Isothiuronium Propyl with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
3-S-Isothiuronium Propyl is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Wuhan Silworld Chemical Co., Ltd. through our platform.
Wuhan Silworld Chemical Co., Ltd. maintains international quality certifications. These ensure that the 3-S-Isothiuronium Propyl meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Wuhan Silworld Chemical Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Wuhan Silworld Chemical Co., Ltd..
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