D. Chapman
ABSTRACT: This paper examines the analysis of pyrotechnic compositions found in fireworks for the presence of sulfur and chlorate ion (ClO3–). Admixtures of these two components can produce compositions which have high sensitiveness to mechanical stimuli (e.g., friction and impact), may be thermally unstable, and are not normally permitted in fireworks in the UK. Analytical methods for the admixture have, in the past, been qualitative. Colorimetric techniques have been developed for the quantitative analysis of sulfur and chlorate which use readily available materials and equipment. The techniques have been validated by examining pyrotechnic mixtures with known proportions of sulfur and chlorate. Fireworks compositions have been analysed and varying levels of sulfur and chlorate found.
Keywords: sulfur/chlorate admixture, analysis, fireworks, sulfur, chlorate
Ref: JPyro, Issue 5, 1997, pp25-32
(J5_25)
© Journal of Pyrotechnics and CarnDu Ltd
