Explore our export-certified product lines optimized for microelectronics, advanced metallurgy, and specialized chemical syntheses.
A rigorous industrial perspective on Carbon Tetrafluoride supply reliability, contamination mitigation, and wafer etching dynamics.
Tetrafluoromethane (CF4, R-14, CAS: 75-73-0) is the most thermodynamically stable saturated fluorocarbon known to physical chemistry. Possessing an sp3-hybridized tetrahedral geometry with four intensely polarized C–F bonds (bond dissociation energy approaching 544 kJ/mol), CF4 exhibits extreme inertness under ambient atmospheric conditions. However, when accelerated within high-density radio-frequency (RF) plasma reactors, it dissociates systematically into fluorine radicals (F*) and fluorocarbon ionic fragments (CF3+, CF2+).
In high-precision reactive ion etching (RIE) and inductively coupled plasma (ICP) environments, CF4 serves as the primary reactive gas for volatile stripping of silicon dioxide (SiO2), silicon nitride (Si3N4), and refractory metals like tungsten (W). The volatilization reaction proceeds through the reaction SiO2 + CF4 (plasma) → SiF4↑ + CO/CO2↑, demanding tight control over oxygen (O2) and hydrogen (H2) blending parameters to achieve selective anisotropic profiles down to sub-5nm fabrication nodes.
| Physical / Chemical Parameter | Industrial Grade (4N) | Electronic Grade (5N) | Ultra-VLSI Grade (5.5N - 6N) |
|---|---|---|---|
| Assay / Gas Purity (CF4) | ≥ 99.99% | ≥ 99.999% | ≥ 99.9995% - 99.9999% |
| Moisture (H2O) Content | ≤ 10.0 ppmv | ≤ 1.0 ppmv | ≤ 0.2 ppmv |
| Oxygen + Argon (O2 + Ar) | ≤ 20.0 ppmv | ≤ 2.0 ppmv | ≤ 0.5 ppmv |
| Total Hydrocarbons (as CH4) | ≤ 10.0 ppmv | ≤ 1.0 ppmv | ≤ 0.1 ppmv |
| Acidity (as HF) | ≤ 1.0 ppmv | ≤ 0.1 ppmv | ≤ 0.05 ppmv |
| Critical Boiling Point | -128.1 °C (145.05 K) at 101.3 kPa | ||
China holds over 60% of the world’s accessible fluorite (CaF2) mineral reserves. Yanxatech integrates operations directly with anhydrous hydrofluoric acid (AHF) distillers, eliminating volatile input price spikes and safeguarding downstream synthesis from supply-side bottlenecks.
Our production facilities employ advanced multistage cryogenic rectification and trace-impurity molecular sieve adsorption arrays, reliably capturing difficult volatile azeotropes (SF6, CO, N2, O2) to deliver dependable 5N5 to 6N bulk quality.
Packaging integrity is critical. Cylinders undergo internal mechanical polishing, high-vacuum ultrasonic baking, and automated inert-gas flush cycling to guarantee that inner canister wall desorption does not contaminate the CF4 payload during transport.
Quantitative benchmarks demonstrating our capacity to support Tier-1 semiconductor wafer foundries and global bulk distributors.
Analyzing cross-regional technological adaptations of high-volume Carbon Tetrafluoride.
Crucial for silicon oxide spacer patterning, deep trench isolation (DTI), and high-aspect-ratio contact etching. Our ultra-low moisture parameters (< 0.2 ppm) eliminate lethal micro-corrosion inside mass flow controllers and process gas lines.
Large-generation glass substrates (Gen 8.5 to Gen 10.5) utilize bulk CF4/O2 gas blends for uniform plasma stripping of passivation layers across wide vacuum chambers without localized thermal burn-in.
In crystalline silicon PERC and TOPCon cell architectures, CF4 plasma dry-texturing creates light-trapping micro-roughness on wafer surfaces while stripping spurious edge junctions, boosting module conversion efficiencies.
Due to its exceptionally low freezing point (-183.6 °C) and non-toxic profile, mixed-refrigerant cryocoolers deploy industrial CF4 (R-14) in cascade refrigeration loops for specialized medical, biopharmaceutical, and aerospace thermal chambers.
Navigating strict hazardous materials protocols across North American, European, and Asia-Pacific customs regimes.
Tetrafluoromethane is regulated globally as UN 1982, Class 2.2 Non-Flammable, Non-Toxic Gas. Our logistics architecture is audited according to IMDG (International Maritime Dangerous Goods) and ICAO/IATA protocols. We provide certified packaging options from DOT-3AA / ISO 9809-1 47L/50L cylinders to massive multi-ton ISO T50 tank containers.
For European buyers, importing specialty fluorinated gases requires stringent compliance under EU REACH regulations, alongside the European F-Gas Regulation (EU 2024/573) quota frameworks. Yanxatech provides direct OR (Only Representative) certificates, complete GHS-compliant 16-section Safety Data Sheets, and transparent import documentation.
While CF4 has an atmospheric lifetime exceeding 50,000 years and a Global Warming Potential (GWP100) of ~7,380, modern fabs install point-of-use thermal and plasma abatement scrubbers. We collaborate directly with facility engineers to supply optimized mixture formulations that maximize chamber ionization efficiency and minimize unreacted effluent gas escaping downstream.
Authoritative answers addressing quality control, trace contamination, documentation, and export handling.
Every production batch is tested in our ISO 17025-compliant laboratory utilizing Gas Chromatography with Pulsed Discharge Helium Ionization Detectors (GC-PDHID) for sub-ppm hydrocarbon and light gas traces, Fourier Transform Infrared Spectroscopy (FTIR) for moisture and fluorinated by-products, and Cavity Ring-Down Spectroscopy (CRDS) to detect moisture down to parts-per-billion levels.
All export cylinders undergo specialized chemical de-passivation, mechanical internal burnishing, and bake-out heating under vacuum (10^-5 Torr) at 150°C. Canisters are subsequently filled under cleanroom manifold conditions and equipped with specialized dual-port diaphragm valves to prevent ambient atmosphere ingress.
We supply cylinders tailored to regional connection standards, including CGA 580 and CGA 320 for North America, DIN 477 No. 6 / No. 10 for European facilities, and JIS DISS (Diameter Index Safety System) fittings for high-purity Japanese and South Korean microelectronic distribution lines.
Palletized 47L/50L cylinders (typically packed in 12-cylinder or 16-cylinder bundled racks) maintain steady rolling stock with lead times of 10 to 14 days from our production base to main Chinese departure ports (Qingdao, Shanghai). Dedicated T50 ISO tanks require 20 to 25 days depending on customer inspection and international certification renewal cycles.
Yes. We frequently produce precision ternary and binary gas mixtures, such as CF4/Oxygen (CF4/O2 for enhanced SiO2 etching velocity), CF4/Argon (CF4/Ar for physical bombardment stabilization), and CF4/Hydrogen blends formulated with gravimetric precision up to +/- 1% tolerance.
Complete product offerings from our advanced materials synthesis base ready for international bulk consolidation.
