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Deuterium is a colorless, odorless, flammable, stable isotope of hydrogen, it is also referred to as "heavy hydrogen".

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Formula: 2H, D2

What is Deuterium?

The name Deuterium is derived from the Greek deuteros, meaning “second”, to denote the two particles composing the nucleus. Deuterium was discovered and named in 1931 by Harold Urey.

Does Deuterium Occur Naturally?

Deuterium is produced for industrial use but does exist naturally. Nearly all deuterium found in nature was produced in the Big Bang 13.8 billion years ago, as the basic or primordial ratio of hydrogen-1 to deuterium (about 26 atoms of deuterium per million hydrogen atoms). This is the ratio found in gas giant planets, such as Jupiter.



Further Specifications

Cylinder Sizes

  • Used in nuclear power, fusion power, lasers and lighting.
  • Used to prepare deuterated biological compounds, deuterated lubricants, deuterated optical fibers, and in electronics as a replacement for hydrogen in the annealing or sintering of silicon based semiconductors, flat panel displays, and solar panels
  • Used in reaction rate studies and exchange reaction studies
Grade 4.5 Grade 5.0
Purity 99.995% 99.999%
Nitrogen < 5 ppmv < 1 ppmv
Oxygen < 1 ppmv < 1 ppmv
Moisture / Deuterated Water < 5 ppmv < 1 ppmv
Carbon Dioxide < 2 ppmv < 1 ppmv
Carbon Monoxide < 1 ppmv < 1 ppmv
Deuterium Hydride < 5000 ppmv < 3000 ppmv
Hydrogen < 150 ppmv < 100 ppmv
Hydrocarbons < 1 ppmv < 1 ppmv
Tritium < 0.002 uCi/L
Chemical & Physical Properties
Molecular Weight 4.03
Valve Outlet CGA 350
Shipping Data
DOT Name Deurtium
Hazard Class 2.1
DOT No. UN 1957
DOT Label Flammable gas
CAS No. 7782-39-0
Cylinder Size Fill Weight (L)
44L/Size 200 5,000
16L/Size 80 1,800
3L/Size 10 100

FAQs about Deuterium

Is deuterium gas safe?

Deuterium is flammable and poses a threat of asphyxiation when inhaled, however, is still considered a non-toxic and stable gas. EFC’s culture of safety ensures that deuterium is always handled correctly, safely, and according to industry standards.  

Where is deuterium gas found?

On Earth, deuterium exists in liquid form in ocean water. Dueterium is made in space. It is present on gas giant planets in our solar system and is present in comets. It is theorized that deuterium played a large role in the Big Bang. 

**Moisture level guaranteed only when Electronic Fluorocarbons prepares the cylinders.
All concentrations are on a mol/mol basis unless otherwise stated.
Product sold on the basis of total impurities. Individual impurities may vary slightly.

*This gas not available for purchase online.