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Copper plating intermediate
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Chemical nature           
Chemical name: 3-[(Aminoiminomethyl)thio]-1-propanesulfonic acid
Molecular formula: C4H10N2O3S2
Molecular weight: 198.2
CAS No.: 21668-81-5

Appearance: White powder
PH: 1.0-4.0 (5% water solution)
Solubility(20℃): 5% water solution is transparent and clear

UPS is used as brightener in copper plating bath at a concentration of 10~50mg/L, it’s used together with polyethylene glycol and anionic surfactant, also can be used in other acid plating solution such as silver plating, palladium plating(etc.).

Packing and Storage
25 Kg/Fiber drum, store in cool and dry place.

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