Melamine is a trimer of cyanamide. It contains 66% nitrogen (by mass) and provides fire retardant properties to resin formulas by releasing nitrogen when burned or charred.

• 三聚氰胺是氨腈的三聚体。它含66%25的氮（质量）并在燃烧或焦化时通过释放氮气为树脂产品提供阻燃特性。