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Color Codes for the Gas Cylinders in Pharmaceuticals


Gas cylinders color codes and their identification according to the gas property.
Gas cylinders are widely used in pharmaceutical industries. It is important to know the color codes of the same because most of the gas cylinders don’t have any written information about their contents. Color codes are given for safety purpose and to prevent mix-ups in handling.

The color codes are specific for the different gases. Gas cylinders may be colored with one or more colors according to gas filled in them. Upper curved part of cylinder is known as shoulder and the lower as body. Different color combinations of shoulder and body are used for different gases. Color codes of gas cylinders may differ from country to country.

Following table shows the general concept for the coding-
Color Code

S. No.
Gas Cylinder
Color
Shoulder
Body
1.
Air
Grey
Grey
2.
Ammonia
Red
Yellow & Black
3.
Carbon Dioxide
Silver
Black
4.
Chlorine
Yellow
Yellow
5.
Helium
Brown
Brown
6.
Hydrogen
Red
Red
7.
Nitrogen
Black
Grey
8.
Oxygen
White
Black

Gas Property
Color of the gas cylinder indicates the hazard but not the filled gas. Poisonous and corrosive gas cylinders have yellow color while red colored cylinders indicate the inflammable gas in them. Oxidizing gas cylinders are light blue in color and inert gas cylinders are bright green.

Note: Valves of oxygen gas cylinders should not be lubricated using oil and grease.







Ankur Choudhary is India's first professional pharmaceutical blogger, author and founder of Pharmaceutical Guidelines, a widely-read pharmaceutical blog since 2008. Sign-up for the free email updates for your daily dose of pharmaceutical tips.
Email: .moc.enilediugamrahp@ofni Need Help: Ask Question


7 Comments so far : Add yours...

PaulusDumex said...

It is a universal code. Perhaps someone can inform the reference.

Paulus G

Amit Srivastava said...

Thanks for the providing a valuable knowledge about pharmaceuticals. but in the above text, how to differentiate the oxygen and carbon dioxide cylinders ? while both color code are same.

Amit Srivastava said...

How can we differentiate between oxygen and carbon dioxide cylinders ? as per above text the color code for the both are same.

Menka said...

Thanks for sharing

Menka said...

Thanks for sharing

Lalitha B said...

The shoulder colors are different .For Oxygen its white and for Carbon dioxide its Silver

Nimesh Shah said...

Thanks very much for providing good information.

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