Chem Explorers

The Versatile Compound: Understanding the Multifarious Uses of Hydrazine

Uses of N2H4 (Hydrazine)

Hydrazine is a colorless and highly reactive inorganic compound that is an important reagent in many chemical synthesis and applications. It is an excellent reducing agent and is used as a propellant in spacecraft, rocket fuel, agrochemicals, and many others.

This article aims to provide a comprehensive understanding of the various applications of hydrazine and its properties in different industries.

Foaming Agent

Hydrazine is an essential ingredient in polymer foam production, as it acts as a foaming agent. The polymer foam produced is lightweight and has excellent insulation properties, making it ideal for the construction and transportation industries.

  • In the construction industry, it is used as insulation for buildings’ walls, floors, and roofs.
  • In the transportation industry, it is used as insulation in ships and aircraft.


Hydrazine is commonly used in spacecraft propulsion due to its high-energy content, specific impulse, and high density. It is used in monopropellant systems for attitude control and altitude maintenance.

The bipropellant system is used for primary spacecraft propulsion systems and consists of liquid oxygen as an oxidizer and hydrazine as a fuel. Hydrazine is also used as a propellant in missiles, torpedoes, and rockets.

Rocket Fuel

Hydrazine is an excellent rocket fuel because it is easy to handle, storable, and has high-energy content. It is used as a primary fuel in rockets, airbags, and spacecrafts that require rapid and precise attitude control.

The bipropellant system consists of liquid oxygen as an oxidizer and hydrazine as a fuel.

Nuclear Power

Hydrazine is used as an oxygen scavenger in the primary coolant of nuclear power plants. It helps in maintaining the quality and purity of water by removing the dissolved oxygen, which can cause corrosion.

Hydrazine is also used to remove metallic impurities from nuclear fuel.


Hydrazine derivatives are used as insecticides, fungicides, herbicides, plant growth regulators, and in the production of other agricultural chemicals. Hydrazine derivatives such as hydrazine sulfate, hydrazine hydrate, and carbohydrazide play a significant role in the agrochemical industry.

Reducing Agent

Hydrazine is an excellent reducing agent that is used to reduce selenium, arsenic, and tellurium compounds. It is also used in the synthesis and reduction of organic compounds in the pharmaceutical and chemical industries.

Photographic Development

Hydrazine is used as a reducing agent in the Wolff Kishner reduction process for the preparation of organic compounds. The Wolff Kishner reduction is an essential step in the photographic development process.

Chemical Properties

Hydrazine is also known as diazane, diamine, tetrahydridodinitrogen, or diamidogen. It is a highly reactive compound that readily forms salts with inorganic and organic acids.

Hydrazine reacts violently with oxidizing agents and can ignite spontaneously in contact with numerous substances.

Physical Properties

Hydrazine is a colorless and flammable liquid that has a fishy odor. It is highly reactive and requires careful handling and storage.

Hydrazine boils at 113.5°C and has a density of 1.00 g/cm3 at 20°C. Hydrazine is stable only in acidic solutions; at neutral or basic pH, it rapidly decomposes to ammonia, nitrogen, and hydrogen.


In conclusion, hydrazine is an essential reagent in various industries due to its unique chemical properties. It is an excellent reducing agent, propellant, rocket fuel, and agrochemical product.

Hydrazine is also used as an oxygen scavenger in nuclear power plants. Its physical and chemical properties are critical in determining its suitability for different applications.

With careful handling and storage, hydrazine continues to be an indispensable compound in numerous industries. Hydrazine is a versatile and crucially important compound used in a wide variety of industries due to its unique chemical properties.

It is a reliable propellant, rocket fuel, and reducing agent, while it is also used as an oxygen scavenger, agrochemical product, and photographic reducer, among others. Understanding hydrazine’s properties is paramount in determining its applicability, while careful storage and handling are essential.

Knowledge of the multifarious uses of hydrazine serves as a reminder of how versatile and valuable chemistry can be.


  1. What is hydrazine used for?
  2. Hydrazine is used in rocket fuel, propellants, reducing agents, agrochemicals, and as an oxygen scavenger.

  3. What are the chemical and physical properties of hydrazine?
  4. Hydrazine is a colorless, flammable liquid with highly reactive properties that require careful handling and storage.

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