Tetranitratoethane is a laboratory-studied solid oxidizer with an unusually high reported oxygen content of 70.1%. Its calculated combustion performance attracted attention, but its high friction and impact sensitivity and decomposition beginning around 90 °C make it a poor practical prospect. The propulsion performance is theoretical, not evidence of a working or adopted rocket propellant.
What is tetranitratoethane?
Tetranitratoethane, with the molecular formula C₂H₂N₄O₁₂, is a specific energetic compound reported by Dennis Fischer, Thomas M. Klapötke, and Jörg Stierstorfer in a 2016 Chemical Communications paper. The authors determined its crystal structure using X-ray diffraction and measured compound-specific energetic properties. The paper is available through the Royal Society of Chemistry; an institutional record is available from the LMU University Library.
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The authors framed the work within research into potential alternatives to ammonium perchlorate, a widely used oxidizer. That motivation does not mean tetranitratoethane has been adopted, commercialized, or established as a replacement.
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The 2016 paper reports that tetranitratoethane contains 70.1% oxygen by mass. A high oxygen content can make an oxidizer scientifically interesting because oxidizers supply oxygen for combustion. The authors also report a density of 1.991 g cm⁻³, measured at 173 K. Both figures describe this compound in the paper; they do not by themselves establish how it would perform in a usable propulsion system.
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Chemistry World reported that calculations of specific impulse suggested theoretical performance exceeding that of ammonium-perchlorate mixtures, among other comparisons. Specific impulse is a measure used to compare propellant performance, but this result was calculated from combustion rather than demonstrated in an operating rocket. The report characterized the compound’s sensitivity and low thermal stability as barriers to near-term practical use (Chemistry World, 18 January 2016).
What limits practical use?
High friction and impact sensitivity
The authors report friction sensitivity of 5 N and impact sensitivity of 2 J in their test context. They describe the material as comparable in sensitivity to nitroglycerin and more sensitive than PETN. These are results from the paper’s tests, not universal thresholds or safe-handling guidance. They indicate that the compound is highly sensitive, a serious obstacle to manufacture, storage, transport, and use.
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Low thermal stability
In the reported differential scanning calorimetry conditions, decomposition began around 90 °C. That relatively low onset temperature further narrows the margin for practical processing and operation. The reported value belongs to the study’s measurement conditions; it should not be treated as a universal temperature limit.
Behavior in air
The paper reports stability at room temperature under a dry atmosphere, while also noting that tetranitratoethane slowly hydrolyzes in air. The dry-atmosphere observation therefore does not imply general stability under ordinary environmental conditions.
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How should its promise be weighed against ammonium perchlorate?
Tetranitratoethane is interesting as a research compound because its reported oxygen content and calculated combustion performance invite comparison with ammonium-perchlorate mixtures. But a performance calculation is only one part of assessing an oxidizer. The measured sensitivity and thermal behavior point in the opposite direction: they present substantial practical constraints, and the reported study does not establish a viable replacement or an operational propulsion application.
The key distinction is between a promising theoretical figure and a material that can be handled and used reliably. In this case, high sensitivity and decomposition beginning around 90 °C outweigh the appeal of calculated performance for near-term practical applications.
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