Enthone M-5-N is a green (Cadmium), permanent, two component, epoxy-based marking ink. When properly applied and cured, it has an excellent adhesion to glass, metal and thermosetting plastics. When mixed with Catalyst 77, which is an adhesion promoting catalyst, it cures at room temperature in 5-7 days. Maximum adhesion is achieved by heat cure @65.6 to 93.3°C (150 to 200°F).