Calcium carbide
Calcium carbide (CAS: 75-20-7), with the chemical formula CaC2, is a solid inorganic compound available as granulated pieces. It is known for its reactivity, particularly its reaction with water to produce acetylene gas. Primarily utilized in industrial applications, it serves as a key reagent in the synthesis of acetylene and in the production of calcium cyanamide, a nitrogen fertilizer. TSS supplies this technical-grade material for various chemical processes.

Acetylene Gas Production
Calcium carbide reacts vigorously with water to generate acetylene (C2H2) gas. This acetylene is a fundamental feedstock for organic synthesis and has historically been used in welding and cutting applications due to its high flame temperature.
Chemical Synthesis
It serves as a precursor for the production of calcium cyanamide (CaCN2), a nitrogen fertilizer and a raw material for various organic compounds. This makes it important in the agricultural and chemical industries.
Desulfurization Agent
In the metallurgical industry, calcium carbide can be used as a desulfurizing agent for iron and steel. It effectively removes sulfur impurities, thereby improving the quality of the metal.
| Molecular weight | 64.10 |
|---|---|
| Linear formula | CaC2 |
| Assay | ≥75% (gas-volumetric) |
| Grade | technical |
| Form | pieces |
| Density | 2.22 g/mL at 25 °C(lit.) |
| Particle size | 0.3-1 mm |



Hazard statements
- H260In contact with water releases flammable gases
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P223Do not allow contact with water
- P231Handle under inert gas
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P370In case of fire
- P422
| Protective equipment | Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 1402 4.3 / PGI |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | F |
| Risk statements (R) | 15-37/38-41 |
| Safety statements (S) | 8-26-39-43 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Quality | granulated |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Calcium Carbide primarily used for?
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Calcium carbide is primarily used for the production of acetylene gas and as a precursor for calcium cyanamide, a nitrogen fertilizer. It also finds application as a desulfurizing agent in metallurgy.
What are the CAS number and formula for Calcium Carbide?
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The CAS number for Calcium Carbide is 75-20-7, and its chemical formula is CaC2.
What grade and purity does Tech Serve Solutions supply for Calcium Carbide?
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Tech Serve Solutions supplies Calcium Carbide in technical grade, granulated form, with an assay of ≥75% (gas-volumetric). We do not represent this product as USP, BP, or EP grade.
How should Calcium Carbide be handled safely?
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Calcium carbide is a dangerous substance that reacts with water to produce flammable gas. Handle it with extreme care, avoiding contact with moisture. Wear appropriate personal protective equipment, including eyeshields, gloves, and a respirator, and ensure adequate ventilation. Refer to the Safety Data Sheet for comprehensive handling instructions.
How is Calcium Carbide packed and exported?
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Calcium carbide is packed as granulated pieces. TSS exports this chemical in compliance with all relevant transportation and safety regulations for hazardous materials.
How can I request a quote or sample for Calcium Carbide?
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To request a quote or sample for Calcium Carbide, please contact our sales team through the details provided on our website.
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