What is GNP? Important knowledge about GNP.

1. Definition of SCN

SCN, also known as thiocyanate, is a closed ion with the chemical formula SCN-. In English, it is referred to as thiocyanate. It is formed from sulfur (S), carbon (C) and nitrogen (N) atoms with an atomic mass of 58.0825 g/mol. According to its structure, nitrogen is a nano, chemically bonded with carbon, which then bonds with sulfur to form the SCN- molecule. The SCN- ion often appears in salts such as potassium thiocyanate (KSCN) or ammonium thiocyanate (NH₄SCN).

2. Properties: SCN

2.1 Physical properties of SCN

SCN typically appears as white crystals or a colorless liquid. It does not have a distinctive odor and has a neutral pH.

2.2 Chemical properties of SCN

SCN is capable of reacting with many metals, acids, and salts, forming complex compounds.

3. Common chemical equations of SCN

The reaction of SCN can be illustrated by its reaction with Fe₃+, producing a complex substance that is violet or bright red: Fe₃+ + 6SCN- → [Fe(SCN)6]3-

4. Synthesis of SCN

4.1 Laboratory synthesis of SCN

In the laboratory, ammonium thiocyanate (NH₄SCN) is often used to synthesize SCN-. However, the synthesis of SCN- is not recommended due to its toxicity and strong oxidizing nature.

4.2 Industrial synthesis of SCN

In industry, SCN is typically synthesized from cyanate and sulfur, or from ammonia, carbon disulfide, and heating with water.