Potassium Sulfide 100 g Manufacturer,Supplier and Exporter in India

Potassium Sulfide 100 g (Product Code: SCI.-737/324) is an analytical reagent grade potassium sulfide used to show metal tarnishing, dark sulfide films on copper and silver, and polysulfide formation in chemistry and materials-science laboratories. The 100 g pack comes with its MSDS, so staff have the handling data for a reagent that gives off hydrogen sulfide with acids. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, a chemistry consumables supplier to schools and colleges.

Specifications

What Is Potassium Sulfide 100 g Used For?

Dipping a cleaned strip of copper or a piece of silver into a dilute, warm potassium sulfide solution quickly forms a dark sulfide film, which shows students why silver tarnishes in air containing traces of hydrogen sulfide and how metalworkers create antique finishes. Potassium sulfide is closely related to “liver of sulfur”, the potassium sulfide–polysulfide mixture used to darken copper and silver, so the experiment links corrosion chemistry with craft and conservation.

Boiling the solution with a little powdered sulfur turns it yellow to orange as polysulfides form, a simple way to show that sulfur atoms can join into chains in solution. Acidify samples only inside a fume cupboard, because acids release hydrogen sulfide, and keep the solid tightly closed since it takes up moisture from the air.

What to Specify When Ordering

• Which listing you are ordering: this page and the separate Potassium Sulfide page both describe a 100 g analytical reagent, so name one code to avoid a double order.
• The number of 100 g packs each laboratory needs.
• Companion items such as copper pieces or sulfur powder for the same demonstration.

Supplier

Jain Scientific Equipments Private Limited supplies Potassium Sulfide 100 g under its ScienceLab name from Ambala, with the MSDS accompanying each pack, for chemistry departments and materials-science classes. Export shipments are handled under Importer-Exporter Code AAECJ8618A (DGFT), and the company's GSTIN 06AAECJ8618A1ZT is available for vendor registration. Schools, colleges, dealers and importers in India and international markets can read more on the ScienceLab profile.

Related Laboratory Equipment

Metals, reagents and small apparatus for sulfide-film and polysulfide demonstrations:

• Copper (Pieces) 100 g — copper metal that darkens as the sulfide film forms.
• Sulfur (Powder) — boiled with the solution to form yellow polysulfides.
• Potassium Sulfide — the other listing of the same salt.
• Hydrochloric Acid Dilute — releases hydrogen sulfide in the sulfide gas test, in a fume cupboard.
• Crucible & Beaker Tongs — for lifting metal samples out of the warm solution.

Find more reagents and apparatus in Laboratory Equipment.

Frequently Asked Questions

What is Potassium Sulfide 100 g used for?
Potassium Sulfide 100 g (SCI.-737/324) is used to form dark sulfide films on copper and silver, to show why silver tarnishes, to make yellow polysulfide solutions with sulfur, and for general sulfide-ion tests. It is an analytical reagent supplied with its MSDS.

How does Potassium Sulfide darken copper or silver?
Sulfide ions from Potassium Sulfide 100 g react with the metal surface to form a thin, dark copper or silver sulfide film. Dip a cleaned strip into a dilute, warm solution for a short time and rinse it; longer contact gives a deeper colour.

Is Potassium Sulfide 100 g the same as the other Potassium Sulfide listing?
Potassium Sulfide 100 g and the separate Potassium Sulfide listing both describe a 100 g analytical reagent with MSDS and share the code number 737/324. Name one listing on your enquiry and we will confirm the item before quoting.

How should Potassium Sulfide 100 g be stored?
Keep Potassium Sulfide 100 g tightly closed in a cool, dry, ventilated cabinet, away from acids and oxidising agents, because it absorbs moisture and releases hydrogen sulfide with acids. Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted.

Who supplies Potassium Sulfide 100 g?
Potassium Sulfide 100 g (SCI.-737/324) is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, India. The company sources the reagent and ships it with its MSDS to schools, colleges, dealers and importers in India and international markets.

What should a Potassium Sulfide 100 g enquiry include?
A Potassium Sulfide 100 g enquiry should include the product code, the number of packs, the delivery location and any copper pieces or sulfur powder for the same demonstration. Send it through the contact page or the enquiry cart to receive a quotation.

Request a Quote

Ask for Potassium Sulfide 100 g through the ScienceLab contact page or the enquiry cart, together with the copper pieces for your tarnish and sulfide-film experiments.

Last updated: 24 September 2026