The faulty Takata airbags use Ammonium Nitrate as a propellant, most other manufacturers decided it wasn't safe but Takata reckoned their product was of a high enough quality to use it. They may have got away with it but they decided they didn't need to add a chemical drying agent, bad move damp Ammonium Nitrate not nice. Add to that some of the raw material handling protocols in some of their subsidiary plants seem to have been more on paper than actually executed. As a result instead of a controlled inflation of the bag they've been getting full on explosions blowing the thing to bits with fatal consequences.
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