Not sure if you fully understood that the red can is made from polyethylene, not steel. – Bobby
If, by polyethylene, you mean “plastic”, that’s even worse. Think about how plastic generates a static charge… and that would be very, very bad. It’s why they do not sell BP in plastic containers, only tin-lined steel.
Stick with traditional methods. Wood, copper. Store in a cool, dry place, away from anything electrical. And in small amounts only. Don’t buy 50lbs of powder and put them all together. Trust me, you don’t want to do that.
The wicked flee when none pursueth..." - Proverbs 28:1