Spontaneous Ignition Behavior of Nitrocellulose–Sulfuric Acid Mixtures

Katsumi Katoh; Eiko Higashi; Tei Saburi; Shunsuke Ito; Yuji Wada; Shuhei Kawaguchi; Kosuke Kumagae; Mitsuru Arai

doi:10.4028/www.scientific.net/AMM.625.280

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 625Spontaneous Ignition Behavior of...

Spontaneous Ignition Behavior of Nitrocellulose–Sulfuric Acid Mixtures

Abstract:

Nitrocellulose (NC) is known to undergo spontaneous ignition, and its thermal stability has been previously reported to decrease in the presence of sulfuric acid. In this study, we evaluated the decomposition and ignition behavior of NC in the presence of sulfuric acid using an accelerating rate calorimeter (ARC) and hand-built ignition testing equipment. The results of the ARC experiment indicated that the thermal stability of NC decreased when the amount of sulfuric acid was increased above 10^-5 mol/g (NC). In addition, when NC (4 g) mixed with sulfuric acid (6.6 mol/L, 1 g) was isothermally stored at 75°C in a glass flask, the color of the reaction mixture changed from white to brown. After 83–127 min, NC spontaneously ignited and produced a loud explosion.

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Periodical:

Applied Mechanics and Materials (Volume 625)

Pages:

280-284

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.625.280

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Online since:

September 2014

Authors:

Katsumi Katoh*, Eiko Higashi, Tei Saburi, Shunsuke Ito, Yuji Wada, Shuhei Kawaguchi, Kosuke Kumagae, Mitsuru Arai

Keywords:

Accelerating Rate Calorimeter (ARC), Explosion Safety, Hazard Evaluation, Nitrocellulose

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References

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