Ammonium perchlorate, with the chemical formula NH4ClO4, is a chemical compound composed of ammonium ions (NH4+) and perchlorate ions (ClO4-). It is a white crystalline solid that is highly soluble in water.

Ammonium perchlorate has several key properties and uses, including:

1. Solid Rocket Propellant: One of the most significant applications of ammonium perchlorate is as an oxidizer in solid rocket propellants. It is widely used in the aerospace industry as a component in solid rocket boosters for space launch vehicles, missiles, and fireworks.
2. Explosive: Ammonium perchlorate is used in certain explosive compositions, particularly in combination with a fuel or binder, to create powerful explosives.
3. Airbag Inflators: It is used in automotive airbag systems as a gas-generating agent for rapid inflation during airbag deployment.
4. Safety Matches: Ammonium perchlorate is used in certain safety matches as an oxidizing agent to ignite the match head.

Ammonium perchlorate is a highly powerful oxidizing agent, which means it can readily release oxygen during chemical reactions, making it an essential component in solid rocket propellants and explosives. Due to its potent oxidizing capabilities, it should be handled with extreme care and proper safety precautions.

Ammonium perchlorate is an important compound in the field of aerospace and military applications, where its ability to release large amounts of oxygen during combustion makes it invaluable for propelling rockets and generating explosive force.