Nitrogen Gas
1. Introduction
Nitrogen (N₂) is chemically inert at room temperature and atmospheric pressure. It is a colorless, odorless, tasteless, non-toxic, and non-flammable gas. Nitrogen makes up about 78.03% of the Earths atmosphere by volume.
Forms of Supply:
- High-pressure cylinders: 5L, 10L, 40L, 47L, 50L, and more.
- Dewar flasks
- Liquid containers: Taylor Wharton, Japan, and others.
- Cryogenic tanks
2. Applications:
- Metallurgy: Heat treatment, rapid cooling, metal slag cleaning, metal powder production, plasma cutting, and float glass manufacturing.
- Construction: Soil freezing, concrete cooling.
- Environmental Protection & Safety Engineering: Pipe and tank purging, fire and explosion protection, composite material recycling.
- Rubber and Plastics Technology
- Food Industry: Packaging and preserving food, rapid freezing, and preserving cryopreserved samples.
- Biology & Medicine: Cryopreservation of biological materials, cryosurgery, sperm preservation.
- Semiconductor Electronics: Process protection gases.
- Scientific Research
3. Properties:
- Main Hazards: Asphyxiation, high-pressure risks.
- Explosive Limits: None
- Flammability: Non-flammable
- Odor: None
- Molecular Weight: 28.1
- Specific Volume at 20°C: 0.858 m³/kg
- Specific Gravity (Air = 1) at 20°C: 0.967
- Critical Temperature: -146.9°C
- Critical Pressure: 34.7 Bar
- Purity Levels: Depending on usage requirements, Nitrogen can be supplied at the following purities: N₂ 4.0, N₂ 5.0, N₂ 6.0
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