Vizag chemical is one of the leading formula for potassium sulfide manufacturers, suppliers, exporters, producers, in Visakhapatnam India. We are supplied into various industrial markets including Household, Institutional Cleaning, Personal Care, and Industrial sectors including Oil fields, Agriculture, Lubricants, Marine Industry, Metal Working chemical industry, and Coatings markets. Potassium sulfide is the inorganic compound with the formula K2S. The colorless solid is rarely encountered, because it reacts readily with water, a reaction that affords potassium hydrosulfide (KSH) and potassium hydroxide (KOH). Most commonly, the term formula for potassium sulfide refers loosely to this mixture, not the anhydrous solid.

Potassium sulfides are formed when black powder is burned and are important intermediates in many pyrotechnic effects, such as Senko Hanabi and some glitter
formulationsBy treating potassium hydroxide with an excess of hydrogen sulfide potassium hydrosulfide (KHS) forms, which with further treatment with the same quantity of potassium hydroxide yields potassium sulfide: Hydrogen sulfide is passed through 3 parts of concentrated potassium hydroxide solution until no further absorption takes place. Then 2 parts of concentrated potassium hydroxide solution is added in order to neutralize potassium hydrosulfide. The rule, however, is to add only two-thirds of the quantity of solution of potassium hydroxide, as it is better the preparation should contain a little potassium hydrosulfide than that free potassium hydroxide should be present. Potassium sulfide should be well protected from air and moisture.

The electro chemical behavior of copper electrode in 2M potassium sulfide solution was studied using cyclic voltammograms and potentiostatic polarization techniques. The morphology studies were applied using scanning electron microscope (SEM) and energy dispersive analysis of X-rays (EDAX) and X-ray powder diffraction. Three anodic peaks were observed in the anodic scan of cyclic voltammograms. SEM and EDAX analysis show the formation of an anodic copper sulfide layer on the surface of copper. Chemical sulfidization of the copper shown to be an important layer growth pathway. The sulfide layers do not passivate copper and the formation of passivating oxide layer is suppressed. The sulfide layer on copper has a Cu2S stoichiometry with roxybyite and digenite structure and it grows by a nucleation. A small patches were consistent with a CuS composition. The formation of KCu7S4 or any other ternary compound could not be observed. Only a presumable polysulfide phase very similar to KCuS4 could be detected.

Copper has been one of the preferred materials in industry owing to its excellent electrical and thermal conductivities, good mechanical work ability and relatively noble properties. It is commonly used as a material in heating and cooling system. There are several authors studied the electrochemical behavior of copper in alkaline environments but there is lack to study the electrochemical behavior of copper in formula for potassium sulfide solutions.
The present work aims to study the electrochemical behavior of copper electrode in potassium sulfide solutions using cyclic voltammogram and potentiostatic polarization techniques. The film formed was investigated by scanning electron microscope (SEM) and energy dispersive analysis of X-ray (EDAX).