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Calcium Carbide
Calcium Carbide (Product Code: SCI-565/245) is an analytical reagent grade inorganic compound used to prepare acetylene (ethyne) gas by reaction with water in school and college organic chemistry laboratories. It gives students a simple route to an unsaturated hydrocarbon for bromine-water and permanganate tests, and it comes as a 200 g pack with an MSDS. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, as part of its chemistry lab equipment and reagent range.
Specifications
| Parameter | Detail |
|---|---|
| Grade | Analytical reagent |
| Pack contents | 200 g |
| Accompanying document | MSDS |
| 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-565/245 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Calcium Carbide Used For?
Water dripped slowly from a dropping funnel onto a few pieces of calcium carbide in a side-tube flask produces acetylene, which is collected over water in test tubes or gas jars. Bubbled through bromine water, the gas removes the orange colour; with dilute alkaline potassium permanganate it turns the purple solution brown, both confirming a carbon–carbon multiple bond. A small tube of acetylene burns with a very sooty, luminous flame, a vivid contrast with methane.
The residue left in the flask is calcium hydroxide, so a drop of indicator shows it is alkaline. Acetylene generated from carbide often carries a garlic-like smell from trace impurities, so work in a well-ventilated room, keep flames away while generating the gas, and ignite only small test-tube samples. Store the pack tightly sealed in a dry place, because moisture in the air slowly releases flammable gas.
Supplier
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, which supplies Calcium Carbide from Ambala, Haryana, for hydrocarbon practicals in schools and colleges. Bromine water, permanganate and gas-generation glassware can be quoted in the same enquiry. Learn more on the ScienceLab profile page.
Related Laboratory Equipment
Preparing and testing acetylene from Calcium Carbide usually involves:
- Conical Flask with Side Tube (Erlenmajer Bunsen) — the generating flask, with an outlet for the gas.
- Rubber Tube (Laboratory) — carries the acetylene to the collecting tubes.
- Bromine (Water Bromine) — decolourises in the test for unsaturation.
- Potassium Permanganate 500 g — for the permanganate test in which purple turns brown.
- Safety Goggles — eye protection while generating and igniting the gas.
Further organic reagents are listed in the Laboratory Equipment category.
Frequently Asked Questions
What is Calcium Carbide used for in the chemistry lab?
Calcium Carbide is used to generate acetylene (ethyne) by controlled reaction with water. Students then test the gas for unsaturation with bromine water and potassium permanganate and observe its sooty flame, a practical introduction to alkynes.
How is acetylene prepared from Calcium Carbide?
Place a few pieces of Calcium Carbide in a side-tube flask and add water slowly from a dropping funnel. The acetylene formed is collected over water, while the calcium hydroxide residue stays in the flask; control the water flow to keep the reaction steady.
How should Calcium Carbide be stored?
Keep Calcium Carbide in its tightly sealed container in a dry, well-ventilated store away from water, acids and ignition sources. Moist air slowly releases flammable acetylene, so reseal the pack immediately after use and follow the MSDS.
What grade and pack size is supplied?
This Calcium Carbide, code SCI-565/245, is listed as analytical reagent grade in a 200 g pack with an MSDS. A few small pieces are enough for each gas preparation, so one pack supports repeated class demonstrations.
What is the shelf life of Calcium Carbide?
Shelf life depends on the chemical, its grade and storage conditions, and Calcium Carbide slowly degrades if moisture enters the pack. Ask us for the expiry date of the batch you are quoted when you send your enquiry.
Can Calcium Carbide be supplied to institutions abroad?
Calcium Carbide releases a flammable gas on contact with water, so international consignments need suitable packing and a carrier that accepts it. Share the destination and quantity on the contact page, and ScienceLab will advise on supply to India and international markets.
Request a Quote
To request Calcium Carbide, give the number of 200 g packs and your delivery location on the contact page, or add it to the enquiry cart with bromine water and a side-tube flask for the acetylene practical. We will reply with pricing and dispatch advice.
Last updated: 24 September 2026
