oxidizer

noun

1. An oxidizing agent, especially one used to oxidize the fuel of a rocket or a fuel cell.

   “Both chemicals are solid oxidizers in granular form and have a chlorine odor. […] Plant 12 also stored super sacks of bromochloro-5,5-dimethylimidazolidine-2,4-dione (BCDMH), which is a granular solid oxidizer with a halogen odor that, in addition to chlorine gas and hydrogen chloride, can also release bromine gas and hydrogen bromide upon decomposition.”

   “BioLab officials told the investigators they had established a permanent fire watch two or three months prior to the incident after strong odors from oxidizers in two storage buildings were detected, according to the CSB report. BioLab also told CSB two employees were on duty for fire watch on September 29.”