Is white corundum poisonous? Is it harmful to people touching white corundum?

Is white corundum poisonous? Is it harmful to people touching white corundum?
The first thing to emphasize is that white corundum is non-toxic. The main chemical component of white corundum is Al2O3, which is not harmful to the human body. It is almost harmless to the human body like silicon carbide abrasives, but because this kind of abrasives belong to the powder category. Therefore, in daily workshop work, workers who can contact white corundum powder need to take protective measures, such as wearing labor protection supplies and dust masks, because any powder is harmful to human breathing.