Nitrogen
We are a manufacturer based in China. We specialize in providing high-quality Nitrogen for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Specialty Gases Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
| Category | Details |
|---|---|
| Purity | – Industrial Grade: 99.5% (2.5 grade) |
| – High-Purity Grade: 99.998% (4.8 grade) to 99.9999% (6.0 grade) | |
| – Impurity Limits: O₂ ≤ 0.5 ppm, H₂O ≤ 1 ppm, CO₂ ≤ 0.1 ppm (6.0 grade) | |
| Physical Properties | – Density: 1.2506 g/L (gas, 0°C/1 atm); 807 kg/m³ (liquid, -196°C) |
| – Boiling Point: -195.79°C (77.36 K) | |
| – Critical Temperature: -147.05°C (126.1 K) | |
| – Pressure: 150–200 bar (compressed gas cylinders); 22 bar (liquid at 15°C) | |
| Key Applications | – Electronics: Carrier gas in semiconductor manufacturing (CVD, etching) |
| – Food & Beverage: Modified atmosphere packaging (MAP) and freezing | |
| – Healthcare: Pharmaceutical freezing/storage, laser surgery, and respiratory therapy | |
| – Chemicals: Inert atmosphere for polymerization and catalysis | |
| – Metallurgy: Annealing, heat treatment, and welding shielding | |
| Technical Specifications | – Cylinder Sizes: 2L, 10L, 50L, 100L (compressed gas); 50L–10.000L (liquid) |
| – Valve Types: CGA 580 (US), DIN 477 (EU), and QF-30 (cryogenic) | |
| – Flow Rate: 0.1–100 L/min (adjustable via regulator) | |
| – Purity Analysis: GC-TCD (Gas Chromatography with Thermal Conductivity Detector) | |
| Safety Data | – CAS No.: 7727-37-9 |
| – UN Number: 1066 (compressed); 1977 (liquid) | |
| – NFPA 704: Health 0. Flammability 0. Reactivity 0 | |
| – Asphyxiation Risk: Displaces oxygen in confined spaces; monitor O₂ levels (≥19.5%) | |
| – Cryogenic Hazard: Liquid nitrogen causes severe frostbite (use PPE: gloves, face shield) | |
| Storage & Handling | – Compressed Gas: Store upright in cool, well-ventilated areas (≤50°C); secure cylinders to prevent falls |
| – Liquid Nitrogen: Use vacuum-insulated dewars; avoid spills (rapid vaporization) | |
| – Ventilation: Ensure airflow in enclosed spaces to prevent CO₂/N₂ buildup | |
| Certifications | – ISO 14175: Welding and allied processes |
| – USP/Ph. Eur.: Medical and pharmaceutical applications | |
| – ASTM D4489: Cryogenic liquid testing | |
| – ISO 7291: Gaseous purity standards | |
| Environmental Impact | – Inert and Non-Toxic: Minimal direct environmental impact |
| – Energy-Intensive Production: Cryogenic distillation (liquefaction consumes ~0.3 kWh/L) | |
| Quality Control | – Traceability: Lot-specific certificates of analysis (COA) |
| – Leak Testing: Helium mass spectrometry (≤1×10⁻⁹ atm·cm³/s) | |
| – Shelf Life: 24–36 months (certified stability when stored properly) |
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