Name: China Calcium carbide
Chemical Formula: CaC2
CAS Number: 75-20-7
UN Number: 1402
Class Grade: 4.3
HS Code: 2849100000
As a leading Chinese chemical manufacturer with over 15 years of professional export experience, ZY Chemical specializes in supplying premium calcium carbide lumps to heavy industries worldwide. Strategically integrated with advanced production lines and professional warehousing near China's major hubs, we ensure an uninterrupted supply chain that perfectly matches the rigid compliance and regulatory framework of different destination countries. Our commitment to purity, high gas yield, and strict quality control has made us a trusted global partner in the chemical trading sector.

The 15-25mm particle size is one of the most versatile and highly demanded specifications of calcium carbide lumps in the industrial market. It serves as a vital component in several core fields:
Acetylene Gas Production: Ideally sized for automated acetylene generators, providing a steady and controllable reaction rate.
Steelmaking and Desulfurization: Widely utilized in metallurgy as a powerful deoxidizer and desulfurizer to improve steel purity.
Chemical Synthesis: Acts as an essential raw material for manufacturing PVC, synthetic rubbers, and organic solvents.

Choosing our 15-25mm calcium carbide lumps offers clear technical and economic benefits for your operations:
Optimized Reaction Control: The precise 15-25mm granulation prevents sudden pressure spikes in generators, ensuring a safer and more uniform gas release compared to irregular sizes.
Guaranteed High Gas Yield: Our factory-direct lumps consistently deliver a high gas yield of up to 305L/KG, maximizing your production efficiency and reducing operational waste.
Minimized Dust and Waste: The uniform screening process drastically reduces fine powder content, lowering material loss during transport and storage.

Navigating international chemical logistics requires absolute compliance. With over 15 years in the market, we possess full export certifications required for smooth customs clearance across Europe, Southeast Asia, and Africa. From standardized 50kg, 100kg, to 120kg hermetically sealed iron drums, our packaging meets the strictest international maritime dangerous goods (IMDG) standards.
We warmly welcome clients from all over the world to visit our modern manufacturing facility in China. If you have any hesitation regarding product specifications or load capacities, we fully support onsite factory audits and pre-shipment inspections by independent third-party agencies (such as SGS or BV) to guarantee total transparency and peace of mind before your cargo departs the port.