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Potassium Sulfide
Potassium Sulfide (Product Code: SCI-737/324) is an analytical reagent grade alkali-metal sulfide used as a source of sulfide ions for precipitation, hydrolysis and redox experiments in school and college chemistry laboratories. It is packed as 100 g with its MSDS and serves as the potassium counterpart of sodium sulfide in inorganic teaching. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, as part of its work as a laboratory chemicals supplier in India.
Specifications
| Parameter | Detail |
|---|---|
| Grade | Analytical reagent |
| Pack capacity | 100 g |
| MSDS | Supplied with the product |
| Shelf life | Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted. |
| Product code | SCI-737/324 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Potassium Sulfide Used For?
Solutions of potassium sulfide precipitate coloured metal sulfides from salt solutions, such as black lead and copper sulfides and white zinc sulfide, and release hydrogen sulfide when acidified, which must be done in a fume cupboard. The solution is strongly alkaline because sulfide ions react with water, a point worth showing with universal indicator paper in salt-hydrolysis lessons.
Sulfide is also a good reducing agent: adding bromine water or acidified potassium permanganate to a potassium sulfide solution produces a pale yellow cloudiness of sulfur as the sulfide is oxidised, and the permanganate loses its purple colour. The solid absorbs moisture and slowly reacts with air, so reseal the container promptly and wear gloves and eye protection when making up solutions.
What to Specify When Ordering
- The number of 100 g packs each laboratory needs.
- The code SCI-737/324, because the catalogue also shows a second Potassium Sulfide 100 g listing.
- Companion reagents such as bromine water, potassium permanganate or zinc and lead salts for the same practicals.
Supplier
ScienceLab — the trading name of Jain Scientific Equipments Private Limited — supplies Potassium Sulfide from Ambala in 100 g packs with the MSDS for inorganic and analytical chemistry teaching. Orders can combine it with oxidising agents, metal salts and indicator papers on one quotation for schools, colleges, dealers and importers in India and international markets. Company information is on the ScienceLab profile.
Related Laboratory Equipment
Reagents used with potassium sulfide in precipitation, hydrolysis and redox work:
- Bromine (Water Bromine) — oxidises sulfide to yellow sulfur in the redox demonstration.
- Potassium Permanganate — acidified, it loses its purple colour as it oxidises sulfide.
- Zinc Sulfate — gives white zinc sulfide with the sulfide solution.
- Universal PH Indicator (Indicator) — indicator paper that shows how alkaline the solution is.
- Sodium Sulfide — the sodium counterpart for comparing results.
More chemicals are listed in Laboratory Equipment.
Frequently Asked Questions
What is Potassium Sulfide used for in teaching laboratories?
Potassium Sulfide SCI-737/324 supplies sulfide ions for precipitating coloured metal sulfides, showing salt hydrolysis through its strongly alkaline solution, and demonstrating redox reactions in which sulfide is oxidised to sulfur. It comes as a 100 g analytical reagent pack with its MSDS.
Why is a Potassium Sulfide solution alkaline?
A Potassium Sulfide solution is alkaline because sulfide ions take hydrogen ions from water, leaving hydroxide ions behind. Testing it with universal indicator paper beside a neutral salt solution makes this hydrolysis effect easy for students to see and explain.
Is Potassium Sulfide hazardous?
Potassium Sulfide is corrosive to skin and eyes, and it releases toxic hydrogen sulfide gas on contact with acids. Handle the SCI-737/324 reagent with gloves and eye protection, acidify samples only in a fume cupboard, and follow the MSDS supplied with each 100 g pack.
How should Potassium Sulfide be stored?
Store Potassium Sulfide SCI-737/324 tightly closed in a cool, dry, ventilated cabinet, away from acids and oxidising agents, since it absorbs moisture from the air. 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 SCI-737/324?
Potassium Sulfide SCI-737/324 is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, India. The company sources the reagent and provides it with its MSDS to schools, colleges, dealers and importers in India and international markets.
What does a Potassium Sulfide quotation need?
A Potassium Sulfide quotation needs the product code SCI-737/324, the number of 100 g packs, your delivery location and any companion reagents for the same practicals. Send the details through the contact page or the enquiry cart and we will reply.
Request a Quote
Request Potassium Sulfide on the ScienceLab contact page or add it to the enquiry cart with the bromine water and metal salts for your sulfide practicals.
Last updated: 24 September 2026
