After declaring a "terrorist plot" was foiled, travelers seeking air transport to an from of Australia will be subject to "enhanced" rules restricting the amount of powdered materials allowed in carry on baggage (archived). Travelers will be restricted to transporting 350 grams of inorganic powders. The new rules specifically mention snow globes and table salt as a example items containing now restricted inorganic powders. The alleged plot cited in the creation of these restrictions involved an "improvised device" denied entry at the flight check in desk by airline employees for a trip from Sydney to Abu Dhabi.
From pedopedia itself:
"Consequently, most commercial explosives are organic compounds"
https://en.wikipedia.org/wiki/Explosive_material