Environmentally friendly red light flare
An environmentally friendly red-light flare was a pyrotechnic (firework) flare which used
Formulation
As of 2018, this is the first documented red-light flare compound that is based on
Previously, many formulations for red-light-emitting pyrotechnics depended on a chemical reaction involving strontium chloride (SrCl). SrCl emits the red color after the flare is ignited. This chemical compound is known as a metastable molecular emitter, meaning, it is not stable at low temperatures but stable in excited high-temperature combustion processes.[3]
History
Before 2018, the formulations for red-light emitting pyrotechnic formulations included powdered metal fuels like magnesium, aluminum, strontium nitrate and perchlorate oxidizers, as well as carbon-based chlorinated organic materials such as poly(vinyl) chloride.[3]
In 2014, the
See also
References
- ^ a b Ellis, T'Jae. "Environmentally-safe red glare rocket changes fireworks, Soldier technology". ARL.Army.Mil.
- ^ a b Mraz, Stephen (January 22, 2018). "The Rockets' Red Glare Just Got a Little Cleaner". Machine Design.
- ^ a b US Army Research Laboratory (January 3, 2018). "Environmentally safe red glare rocket changes fireworks, soldier technology". Angewandte Chemie International Edition.
- ^ "Announcement of Preliminary Regulatory Determinations for Contaminants on the Third Drinking Water Contaminant Candidate List". Federal Register. 2014-10-20. Retrieved 2018-08-06.