Thursday, 20 June, 2024

Physical properties of 3-bromo-1h-pyrazol-5-amine

3-bromo-1H-pyrazol-5-amine is an organic compound with potential applications in various fields, including pharmaceuticals, agrochemicals, and materials science. In this post, SACH will provide you with the physical properties of this compound, which are crucial for understanding its behavior, reactivity, and suitability for different applications.

Introduction to 3-Bromo-1H-Pyrazol-5-Amine

Before we explore the physical properties of 3-bromo-1H-pyrazol-5-amine, let's briefly introduce the compound. It is a heterocyclic compound belonging to the pyrazol class, characterized by the presence of a bromine atom at the third position and an amino group at the fifth position. The molecular formula for this compound is C3H4BrN3.

Molecular Weight

The molecular weight of 3-bromo-1H-pyrazol-5-amine is an important physical property that affects its transport and distribution in various media. The molecular weight is approximately 161.98800g/mol.

Melting Point and Boiling Point

Melting and boiling points are critical physical properties that determine the compound's stability and suitability for various applications. These values can vary based on the purity of the compound and the experimental conditions.

– Melting Point: The melting point of 3-bromo-1H-pyrazol-5-amine is typically in the range of 80°C to 90°C. This property is useful for identifying the compound and assessing its thermal stability.

– Boiling Point: The boiling point is higher and can be found between 280°C and 290°C under standard atmospheric pressure. This value is essential for determining the compound's volatility and its behavior during heating.


Understanding the solubility of 3-bromo-1H-pyrazol-5-amine is vital for its use in chemical reactions and formulations. This compound is generally more soluble in organic solvents such as:

– Dimethyl sulfoxide (DMSO)

– Methanol

– Ethanol

– Acetonitrile

However, its solubility in water is relatively low, which can limit its use in aqueous environments.



Density is a measure of mass per unit volume and is an important physical property for determining the compound's behavior in different applications. The density of 3-bromo-1H-pyrazol-5-amine is influenced by its molecular structure and intermolecular forces. While specific density values can vary, it is generally expected to be higher than that of water due to the presence of the bromine atom, which adds significant mass to the molecule.

Crystal Structure

The crystal structure of 3-bromo-1H-pyrazol-5-amine can provide insights into its physical properties, such as its melting point, mechanical strength, and optical properties. Crystal structures are typically determined using X-ray crystallography. The compound is likely to form a crystalline solid with a well-defined lattice structure, influenced by the interplay of its molecular geometry and intermolecular forces.

Optical Properties

The optical properties of 3-bromo-1H-pyrazol-5-amine, such as its absorption and emission spectra, can be important for applications in fluorescence-based assays or as a component in optoelectronic devices. These properties are dependent on the electronic structure of the molecule and the nature of its chromophores.

Stability and Reactivity

Understanding the stability and reactivity of 3-bromo-1H-pyrazol-5-amine is crucial for its safe handling and use. The compound is generally stable under normal conditions but may react with strong oxidizing agents, reducing agents, or nucleophiles due to the presence of the bromine atom and the amino group.

Safety and Hazards

When handling 3-bromo-1H-pyrazol-5-amine, it is essential to consider its safety profile. The compound may have hazardous properties, such as being corrosive or toxic, and should be handled with care. Appropriate safety measures, including the use of personal protective equipment (PPE) and proper disposal methods, should be followed.


The physical properties of 3-bromo-1H-pyrazol-5-amine, including its molecular weight, melting and boiling points, solubility, density, crystal structure, optical properties, stability, and safety, are critical for its application in various fields. Understanding these properties can guide the compound's synthesis, formulation, and use in research and industry. Further studies may be necessary to fully characterize its properties and optimize its applications.


0 comments on “Physical properties of 3-bromo-1h-pyrazol-5-amine

Leave a Reply

Your email address will not be published. Required fields are marked *