Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

This is an AMP page - Open full page! for all features.

Classification of Gases

Sponsored Links

Compressed gases can be classified as

  • oxidizers
  • inert gases
  • flammable gases


Oxidizers are not flammable by them self, but will contribute to combustion as an oxidant. Fat or oil is not acceptable in combination with oxidizers.

Some common oxidizers:

  • Air
  • Chlorine
  • Fluorine
  • Nitric Oxide
  • Nitrogen Dioxide
  • Oxygen

Inert gases

Inert gases do not take part in combustion processes and they do not react with other materials. An inert gas supplied to a room or limited space will reduce the amount of oxygen and limit a combustion process of a fire. Inert gases are used in extinguishing systems where it is important to avoid water damage - rooms with electronic devices etc.

Some inert gases:

  • Argon
  • Carbon Dioxide
  • Helium
  • Neon
  • Nitrogen
  • Xenon

Flammable gases

Flammable gases together with air or oxygen in the right concentration burns or explodes if ignited.

If the mixture is to lean or to rich the mixture will not ignite.

Some flammable gases:

  • Acetylene
  • Ammonia
  • Arsine
  • Butane
  • Carbon Monoxide
  • Cyclopropane
  • Ethane
  • Ethylene
  • Ethyl Chloride
  • Hydrogen
  • Isobutan
  • Methane
  • Methyl Chloride
  • Propane
  • Propylene
  • Silane
Sponsored Links

Related Topics


Combustion processes and their efficiency. Boiler house and chimney topics. Properties of fuels like oil, gas, coal and wood and more. Safety valves and tanks.

Gases and Compressed Air

Properties of air, LNG, LPG and other common gases. Pipeline capacities and sizing of relief valves.

Related Documents

Fuels and Chemicals - Autoignition Temperatures

Autoignition points for fuels and chemicals like butane, coke, hydrogen, petroleum and more.

Gases - Densities

Densities and molecular weights of common gases like acetylene, air, methane, nitrogen, oxygen and others.

Hazardous Areas - European Classification Standard

European hazardous area classification with zones, protection types, temperature codes and codes.

Hazardous Areas - North America Classification

North American hazardous locations classification with classes, divisions and groups

Sponsored Links

Search Engineering ToolBox

  • the most efficient way to navigate the Engineering ToolBox!

SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!


We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.