Name: Calcium carbide
Chemical Formula: CaC2
CAS Number: 75-20-7
UN Number: 1402
Class Grade: 4.3
HS Code: 2849100000
In the industrial synthesis of Polyvinyl Chloride (PVC), selecting the right raw materials is paramount to operational safety and final product integrity. For PVC plants utilizing the calcium carbide method, calcium carbide crystals 50-80mm have long been established as the gold standard particle size. As a certified, direct-manufacturing powerhouse, our factory delivers exceptionally uniform calcium carbide crystals that empower PVC producers worldwide to maximize their output while minimizing operational hazards.
The production of PVC hinges entirely on the continuous, controlled reaction of calcium carbide (CaC2) with water to generate acetylene gas (C2H2)—the essential building block for Vinyl Chloride Monomer (VCM). The 50-80mm particle size is uniquely suited for large-scale wet-type and fixed-bed acetylene generators for several critical reasons:
Optimal Gas Evolution Kinetics: Oversized lumps can cause incomplete hydrolysis, creating a "shielded core" that leaves unreacted chemical waste. Conversely, fine powders react too violently, sparking dangerous pressure surges. The uniform 50-80mm crystals ensure a perfectly balanced, steady, and high-volume release of acetylene gas.
Enhanced Mechanical Reliability: Our highly uniform granularity prevents mechanical jamming in automated feeding hoppers, reducing unexpected maintenance downtime and ensuring uninterrupted PVC polymerization lines.
High Gas Yield and Purity: Our crystals yield cleaner acetylene with minimal phosphine and hydrogen sulfide impurities, directly improving the efficiency of subsequent synthesis stages.
We recognize that chemical compliance and logistics stability are just as crucial as product quality. To provide our international buyers with absolute peace of mind, we operate under a framework of complete transparency and elite standards:
Comprehensive Certification & Global Standards: Our factory holds all essential hazardous goods export permits, ISO quality management certifications, and compliant safety data documentation. We strictly adhere to international maritime dangerous goods (IMDG) packing regulations.
Third-Party Inspection Welcomed: We fully support and accept independent third-party inspections (such as SGS, BV, or Intertek) for factory audits, chemical testing, and pre-shipment loading supervision. What you see is exactly what you get.
Global Invitation to Our Facilities: We warmly welcome clients from around the globe to visit our state-of-the-art production lines, internal steel drum manufacturing units, and advanced testing laboratories to witness our quality firsthand.
Hassle-Free After-Sales Support: Backed by over 15 years of chemical export expertise, we stand behind every shipment. Our dedicated technical support team ensures worry-free after-sales service, safeguarding your production continuity from port to plant.
Elevate your PVC manufacturing efficiency with our reliable, high-purity industrial materials. Contact our export desk today to request a quotation, coordinate a site visit, or arrange a tailored third-party testing protocol.
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 >>]
