"When they say it's a derivative, they probably mean closer to that herbicide then?" When they say it's a derivative, they most probably mean that they saw som

"When they say it's a derivative, they probably mean closer to that herbicide then?" When they say it's a derivative, they most probably mean that they saw something orange, and that is why they call it Agent Orange. Unfortunately, the average person seeing teargas is fairly ignorant about chemistry and biology. It makes no sense to spread a herbicide in a demonstration. It is harmful in the long term but has no impact on people in the short term, thus is just no use in that situation. Agent Orange was called AO because the containers it came in had an orange strip. The substance itself is colourless, just like the same herbicides today. And is not particularly toxic to humans, the problem in Vietnam was trace amounts of dioxin in manufacturing the 2,4,5-T component.