Nitrogen (N)

Place of Origin:

Vietnam

Brand Name:

Khoa Dung Industrial Gas

Usage:

UN Number: 1977
Hazard Label: 2.2 — Non-flammable Gas
CAS Number: 231-783-9

Min. Order:

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Supply Ability:

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Delivery time:

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Main market:

Vietnam, International

Contact infomation

Contact name: Ms. Dung (Eng/Vie)

Mobiphone:+84 902.184.848

Email: khoadung@khicongnghiepkd.vn

Product & service detail

NITROGEN (N)

1. Overview

Nitrogen is a chemical element with the symbol N and atomic number 7. Under normal conditions, it is a colorless, odorless, tasteless, and quite inert gas in its molecular form, N2, also known as nitrogen gas. It makes up about 78% of Earths atmosphere and is a component of all living organisms. Nitrogen produces many important compounds such as amino acids, ammonia, nitric acid, and cyanides.

2. Properties

Nitrogen is a nonmetal with an electronegativity of 3.04. It has five electrons in its outermost shell, making it typically trivalent in most compounds. Pure nitrogen is a colorless molecular gas that only participates in chemical reactions at room temperature when reacting with lithium. It liquefies at 77 K (-196°C) under atmospheric pressure and freezes at 63 K (-210°C). Liquid nitrogen is commonly used as a refrigerant.

At normal temperature and air pressure, nitrogen is almost chemically inert. It is a colorless, odorless, tasteless, non-toxic, and non-flammable gas. In the air, nitrogen accounts for 78.03% by volume.

3. Applications

Nitrogen has two special features: it is an inert, non-toxic, and non-flammable gas, and liquid nitrogen at standard pressure (1.013 bar) has a very cold temperature (-196°C). As a major component of Earths atmosphere, nitrogen is produced on an industrial scale in large quantities. Because of this, nitrogen is used more than any other industrial gas.

• Preserving the freshness of packaged foods
• Ensuring safety on top of liquid explosives
• Production of electronic components
• Stainless steel production
• Inflating car and airplane tires
• Heat treatment
• Welding or laser cutting
• Liquid nitrogen is extremely useful in various applications
• Refrigerating, freezing, or controlling the temperature of food products
• Temperature control during transportation and distribution by indirect liquid nitrogen spraying
• Preserving body parts, sperm and egg cells, samples, and biological products
• Medical applications (dermatology)

4. Characteristics

— Main risks: suffocation, high-pressure risk
— Explosion limit: None
— Flammability: None
— Smell: None
— Molecular weight: 28.1
— Specific capacity 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 is available in the following purities: N2 4.0, N2 5.0, N2 6.0.