Yesterday, I discussed ammonium nitrate, an industrial fertilizer. One problem with it is its lavish reactivity. On its own, and particularly in combination with hydrocarbons, it makes a potent explosive – it was used in the attack on Oklahoma City in the 1990′s.
Apparently, adding a different counterion makes a world of difference. This week, Honeywell reported a new fertilizer, Sulf-N26, which is just a mix of ammonium nitrate and ammonium sulfate. Apparently, it doesn’t support the explosive combustion of fuel oil like pure ammonium nitrate does.