Name: Calcium carbide
Chemical Formula: CaC2
CAS Number: 75-20-7
UN Number: 1402
Class Grade: 4.3
HS Code: 2849100000
As a leading Calcium Carbide supplier and direct manufacturer in China, we provide premium Calcium Carbide (CaC2) solutions tailored to the strict demands of global industrial markets. Backed by advanced manufacturing processes, rigorous quality testing, and robust international shipping capabilities, our factory delivers reliable chemical raw materials directly from the source.
Different manufacturing processes require specific reaction speeds and gas release rates. To meet all client requirements, we produce a comprehensive range of Calcium Carbide granule sizes:
0–4 mm & 4–7 mm: Fine granules designed for rapid reaction applications, laboratory testing, and specialized chemical synthesis.
7–15 mm & 15–25 mm: Medium-fine sizes used in controlled acetylene gas generation and specific desulfurization setups.
25–50 mm, 50–80 mm & 80–120 mm: Standard and large lump sizes ideal for heavy industrial operations, large-scale acetylene plants, and metallurgical processing.
Our full spectrum of sizes allows industrial buyers to optimize gas yields, reduce material waste, and maintain seamless production line efficiency.
Among all available specifications, 50–80mm Calcium Carbide is the most widely requested size globally due to its balanced physical and chemical characteristics.
Industrial Acetylene Gas Production: Serves as the primary feedstock for medium to large-scale acetylene generators, producing acetylene gas used extensively in oxy-acetylene metal cutting and welding.
Steelmaking & Desulfurization: Functions as an effective desulfurizing agent and deoxidizer in ladle metallurgy, removing impurities and improving high-grade steel purity.
Chemical Manufacturing: Acts as a foundational building block for synthesizing Polyvinyl Chloride (PVC), calcium cyanamide (lime nitrogen), synthetic rubber, and other organic chemical compounds.
Controlled Gas Reagents: Used in agricultural and industrial processing settings where controlled, steady gas generation is required.
Selecting the right particle size is critical for operational safety, gas generation stability, and equipment longevity:
| Feature / Size Range | Fine Sizes (0–4mm, 4–7mm) | Standard Lumps (50–80mm) | Large Lumps (80–120mm) |
| Reaction Speed | Immediate & Extremely Fast | Balanced & Highly Controllable | Slow & Sustained |
| Gas Yield Yield Control | Prone to sudden pressure spikes | Consistent, steady pressure curve | Gradual release, lower immediate yield |
| Handling & Storage | High surface area, moisture-sensitive | Minimal dust, safe storage, long shelf life | Heavy lumps, requires heavy-duty feed equipment |
| Primary Industrial Use | Reagent additives, rapid reactions | Mainstream Acetylene Plants & Steel Mills | Large continuous-feed generators |
Why 50–80mm is Preferred: Ultra-fine particles (0–7mm) react instantly upon contact with moisture, posing strict safety and pressure-management challenges. Conversely, large lumps (80–120mm) require longer reaction times to decompose completely. The 50–80mm specification provides the optimal sweet spot—delivering maximum, steady gas yield (minimum 295 L/kg) while ensuring manageable reaction rates and safe handling.
Factory-Direct Supply: Eliminates intermediaries to ensure competitive pricing and steady volume supply.
Strict Quality Assurance: High-purity output guarantees reliable gas generation rates.
Export-Grade Packaging: Heavy-duty steel drums sealed with inert nitrogen protection to withstand long-distance maritime transport.
TIANJIN ZHONGYING CHEMICAL CO.,LTD is a modern chemical enterprise specializing in the research, development, production, and sales of calcium carbide (commonly known as calcium carbide). With years of experience in the basic chemical industry, and leveraging regional resources and advanced production technology, the company is committed to providing downstream industries with high-quality, highly stable calcium carbide products....[ Read More >>]
