Hydrogen FAQs

What is the substance identification of hydrogen?

Chemical formula: H₂
Synonyms: Liquid Hydrogen (LHY), Gaseous Hydrogen (BHY)
REACH Registration Number: Listed in Annex IV / V REACH, exempted from registration
Gases under pressure - Compressed gas. H280:Contains gas under pressure; may explode if heated

What is the ADR classification of hydrogen?

UN/ID No.: UN1049
Proper shipping name: HYDROGEN, COMPRESSED Class or Division : 2
Tunnel Code: (B/D) Label(s) : 2.1
ADR/RID Hazard ID no.: 23
Marine Pollutant: No

Why is hydrogen an efficient fuel for transportation such as fuel cell vehicles?

Hydrogen has the highest combustion energy per pound relative to any other fuel, meaning it is more efficient on a weight basis than fuels used currently. Hydrogen offers 2-3 times more energy than most other common fuels. It combines readily with oxygen, releasing considerable energy as heat.

Why is hydrogen the cleanest fuel?

Unlike carbon-based fuels, hydrogen produces no harmful by-products upon combustion. Only energy and clean water are produced when hydrogen is combined with oxygen in a fuel cell.

My process requires high pressure hydrogen, what's the most efficient method of supply?

I'm evaluating some changes to our process that require hydrogen. How can Air Products help me understand the potential effects?

Speak to a Specialist

One of our specialists will be able to provide you advice and the best options available for your application.