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Sodium Sulfide
Sodium Sulfide (Product Code: SCI-703/310) is an analytical reagent grade sulfide salt used as a solid source of sulfide ions for precipitation tests, sulfide-ion identification and hydrogen sulfide demonstrations in chemistry laboratories. It comes as a 100 g pack with its MSDS, a manageable amount of a reagent that absorbs moisture and smells of hydrogen sulfide once opened. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, among its laboratory chemicals for schools and colleges.
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-703/310 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Sodium Sulfide Used For?
A few drops of sodium sulfide solution precipitate coloured sulfides from many metal salt solutions — black with lead and copper, white with zinc and yellow with cadmium — which makes it a quick way to show insoluble-salt formation and how heavy metals can be detected in water. Adding dilute hydrochloric acid to a small amount releases hydrogen sulfide, which blackens lead acetate paper; this demonstration belongs strictly in a fume cupboard.
Sodium sulfide is also the usual sample for identifying the sulfide ion: with freshly prepared sodium nitroprusside solution it gives a purple to violet colour. In industry the same compound removes hair from hides in leather processing, a useful real-world link for chemistry and vocational lessons. Its solution is strongly alkaline, so wear gloves and eye protection when making it up.
What to Specify When Ordering
- The number of 100 g packs; modest stocks suit a solid that takes up moisture once opened.
- The tests you plan (metal sulfide precipitation, sulfide-ion test or hydrogen sulfide demonstration), so companion reagents can be added.
- Companion reagents such as lead acetate, sodium nitroprusside or dilute hydrochloric acid for the same enquiry.
Supplier
Jain Scientific Equipments Private Limited, trading as ScienceLab, supplies Sodium Sulfide from Ambala to schools, colleges and teaching or water-testing laboratories, with the MSDS sent alongside each 100 g pack. Buyers can list it with metal salts, test papers and glassware on a single enquiry, and dealers and importers in India and international markets can include it in wider reagent orders. Read about the company on the ScienceLab profile.
Related Laboratory Equipment
Reagents used with sodium sulfide in sulfide and metal-ion tests:
- Lead Ethanoate — lead acetate for the paper test that hydrogen sulfide turns black.
- Sodium Nitroprusside — gives the violet colour that confirms sulfide ions.
- Hydrochloric Acid — releases hydrogen sulfide from the salt in the gas test.
- Copper Nitrate — a copper salt that gives a black copper sulfide precipitate.
- Sodium Sulphide — the same salt in a larger pack under its own listing.
Other chemicals and apparatus are in Laboratory Equipment.
Frequently Asked Questions
What is Sodium Sulfide used for in the chemistry lab?
Sodium Sulfide SCI-703/310 supplies sulfide ions for precipitating coloured metal sulfides, identifying the sulfide ion with sodium nitroprusside, and generating small amounts of hydrogen sulfide with dilute acid in a fume cupboard. It comes as a 100 g analytical reagent pack with its MSDS.
How do you test for sulfide ions with Sodium Sulfide?
Dissolve a little Sodium Sulfide in water and add a few drops of freshly made sodium nitroprusside solution; a purple to violet colour confirms sulfide. Alternatively, warm a sample with dilute acid and hold moist lead acetate paper at the mouth of the tube, which turns black.
Why does Sodium Sulfide smell of rotten eggs?
Sodium Sulfide reacts slowly with moisture and carbon dioxide in the air, releasing traces of hydrogen sulfide with its rotten-egg smell. Keep the SCI-703/310 container tightly closed, open it in a ventilated area and never mix the solid with acids outside a fume cupboard.
How should Sodium Sulfide be stored?
Store Sodium Sulfide SCI-703/310 tightly closed in a cool, dry, ventilated cabinet, away from acids and oxidising agents. 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 Sodium Sulfide SCI-703/310?
Sodium Sulfide SCI-703/310 is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, India. The company sources the reagent and sends it with its MSDS to schools, colleges, testing laboratories, dealers and importers in India and international markets.
What does a Sodium Sulfide quotation need?
A Sodium Sulfide quotation needs the product code SCI-703/310, the number of 100 g packs, the delivery location and any companion reagents such as lead acetate or sodium nitroprusside. Send these details through the contact page or the enquiry cart and we will reply.
Request a Quote
Request Sodium Sulfide from the ScienceLab contact page or put it in the enquiry cart along with the test reagents for your sulfide and metal-ion practicals.
Last updated: 24 September 2026
