The products you purchase have been tested before hitting the market, so they are generally recognized as safe, but that's not saying that you can't have a possible reaction to them - it's common with adhesives, and some people need to try different products in order to find one that doesn't cause skin irritation.
If your skin is being irritated around your stoma, then it could be a sign of your wafer not holding up 100% - try using moldable rings or change your appliance more often to see if it helps. Looks like you are a new ostomate, so irritation is almost expected for the first little while