Melamine, commonly known as close amine, protein essence, the molecular formula is C₃H₆N₆, IUPAC named "1,3, 5-triazine-2,4, 6-triamine", is a triazine-containing nitrogen heterocyclic organic compounds, used as chemical raw materials. It is a white monoclinic crystal, almost tasteless, harmful to the body, and should not be used in food processing or food additives.

It IS MAINLY USED AS THE main RAW material FOR THE manufacture of melamine formaldehyde resin, organic element analysis reagent, and also used for the synthesis of organic and resin as leather processing tanning agent and filling agent.

Precautions for operation: closed operation, comprehensive exhaust air. Operators must be specially trained and strictly follow the operating procedures. It is recommended that operators wear self-priming filter type dust mask, chemical safety protective glasses, protective clothing, and rubber gloves. Avoid dust. Avoid contact with oxidants and acids. Handling should be light, to prevent damage to the packaging and containers. Equipped with leakage emergency treatment equipment. Empty containers may retain harmful substances.

Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat source. Should be stored separately from oxidants and acids, do not mix storage. The storage area shall be equipped with suitable materials to hold the leakage.