Is L-Cystine (CAS: 56-89-3) safe?

L-Cystine is generally considered safe when used in recommended amounts. It is non-toxic and well-tolerated in most applications. However, handling precautions should be taken to avoid inhalation or skin contact, especially in industrial settings. Proper protective equipment, such as gloves and masks, is advised. Safety standards ensure its controlled use in pharmaceuticals and food products. Its CAS number, 56-89-3, is used to monitor its safe handling and regulatory compliance.