HYARC
Hydrogen Properties
Discover the Remarkable Properties of Hydrogen

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Comparative Properties of Hydrogen and Other Fuels
PropertyUnitsHydrogenMethanePropaneMethanolEthanolGasolineChemical Formula H2CH4C3H8CH3OHC2H5OHCxHy (x = 4 - 12)Molecular Weight [a, b] 2.0216.0444.132.0446.07100 - 105Density, NTP [3, a, c]kg/m³0.08380.6681.87791789751 lb/ft³0.…
Hydrogen Fuel Quality Standards
Presents hydrogen fuel specifications currently prescribed by the State of California.Updated July, 2019.
International Hydrogen Fueling Stations
This spreadsheet provides characteristics of active and planned hydrogen stations outside of the United States.  Fueling stations used to refuel over-the-road hydrogen vehicles are the intended scope; stations built for the sole purpose of…
Standard Financial Inputs for Hydrogen Analysis
Standard Financial Inputs for Hydrogen Analysis (based on H2A Guidelines).
U.S. Hydrogen Fueling Stations
Existing and planned hydrogen fueling stations in the U.S. are available to view on a map or download as a spreadsheet from the Alternative Fuels Data Center.  The site includes information regarding location, accessibility, hours of…

This material was prepared as an account of work sponsored by an agency of the United States Government.
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The portal brings together and enhances the utility of a variety of tools and web-based content on the safety aspects of hydrogen and fuel cell technologies to help inform those tasked with designing, approving or using systems and facilities, as well as those responding to incidents.

Copyright © 2025 by H2Tools; H2 Tools is intended for public use. It was built, and is maintained, by the Pacific Northwest National Laboratory with funding from the DOE Office of Energy Efficiency and Renewable Energy's Hydrogen and Fuel Cell Technologies Office. All Rights Reserved
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