Import 3-(Amidinothio)-1-Propanesulfonic Acid — Buy in wholesale FOB from Supplier in China

3-(Amidinothio)-1-Propanesulfonic Acid, commonly known as UPS, is a speciality sulfonic acid compound with the molecular formula C4H10N2O3S2 and CAS number 21668-81-5. The product supplied by Wuhan Excellent Voyage Chemical Co., Ltd. is offered at 95% purity as a white powder, classified under HS code 2930909090. This organosulfur compound contains both an amidinothio group and a terminal sulfonic acid moiety, giving it strong chelating and surface-active properties in acidic aqueous environments.

The 95% purity grade indicates this is a technical-grade material suitable for electroplating applications rather than pharmaceutical use. The remaining 5% typically comprises residual moisture, inorganic salts from synthesis (often sodium chloride or sulfate traces), and unreacted intermediates such as 3-mercaptopropanesulfonic acid or guanidine derivatives. Standard synthesis routes involve the reaction of 3-mercaptopropanesulfonic acid with cyanamide or equivalent amidine precursors. Buyers should request a certificate of analysis specifying the exact assay method, as titrimetric and HPLC methods may yield slightly different purity figures for this compound.

Primary application is as an additive in acidic copper plating baths, where it functions as a brightener and levelling agent when combined with polyvinyl alcohol or nonionic surfactants. The compound is also used in acidic silver and palladium plating solutions. Typical buyers include electroplating chemical formulators, PCB manufacturers, and surface finishing companies. Packaging and minimum order quantities should be confirmed directly with Wuhan Excellent Voyage Chemical Co., Ltd., as these are not specified in the listing. The supplier operates from Hubei Province with export capability indicated by HS code inclusion.

Wuhan Excellent Voyage Chemical Co., Ltd. is located in Wuhan, Hubei Province, China, with a registered address at Room 4505, 5th Building, Vanke Hankou Legend. The supplier holds a harbor trust tier classification on the platform. The response rate is recorded at 0.00% with zero average response hours, which indicates either a new listing, limited platform engagement, or that response metrics have not yet populated for this account.

The company specialises in fine chemicals and electroplating additives, as evidenced by this listing for UPS and its CAS-numbered product presentation. No verified manufacturing certifications, ISO accreditations, or export licence details are stated in the available profile data. Buyers should independently verify the supplier's production capacity, quality management systems, and whether the 95% purity represents a standard or customised specification. The Hubei location places the supplier within one of China's established chemical manufacturing corridors, with access to Wuhan's logistics infrastructure and Yangtze River port facilities.