For chemists and formulators in the B2B sector, a thorough understanding of chemical properties is fundamental to successful synthesis and application. 5-Chloroindole (CAS 17422-32-1) is a prime example of a versatile fine chemical intermediate whose utility is directly linked to its distinct chemical and physical characteristics. This article explores these properties and offers insights for professionals looking to buy or utilize this compound.

5-Chloroindole, with the molecular formula C8H6ClN and a molecular weight of approximately 151.60 g/mol, typically presents as a White to slightly grayish-green crystalline powder. Its physical state as a solid at room temperature is a significant advantage for handling and storage in industrial settings. The melting point of 5-Chloroindole is reported in the range of 69-71 °C (lit.), indicating a relatively stable solid form under typical laboratory and warehouse conditions. This property is crucial for manufacturers and formulators who need to maintain material integrity during transport and storage.

In terms of solubility, 5-Chloroindole is noted to be soluble in alcohol, a common characteristic that facilitates its incorporation into various solvent systems used in chemical reactions and formulations. This solubility profile is advantageous for processes requiring homogeneous reaction mixtures or precise dosing of the intermediate. While specific details on density and refractive index are often provided for reference, the primary focus for most buyers is the compound's reactivity and purity.

The reactivity of 5-Chloroindole is attributed to the indole ring system, which is susceptible to various electrophilic substitution reactions, and the presence of the chlorine atom, which can also participate in nucleophilic substitution or coupling reactions under specific conditions. This dual reactivity makes it a versatile building block in organic synthesis, enabling chemists to construct complex molecular architectures with a degree of control. Its application as an intermediate in pharmaceutical synthesis, for example, often involves functionalizing the indole ring or utilizing the chlorine atom for further elaboration.

Safety considerations are also paramount when handling any chemical intermediate. 5-Chloroindole is classified as an irritant, with hazard statements typically including warnings for skin, eye, and respiratory irritation (e.g., H315, H319, H335). Therefore, appropriate personal protective equipment (PPE), such as gloves, safety glasses, and lab coats, should always be worn when handling this material. Proper ventilation in the work area is also recommended to minimize exposure. When you buy 5-Chloroindole, always refer to the provided Safety Data Sheet (SDS) for comprehensive handling, storage, and emergency procedures.

For B2B clients seeking to procure 5-Chloroindole, understanding these chemical and physical properties ensures that they select the right material for their specific needs, optimize their synthetic processes, and maintain safe working environments. Working with a reliable supplier that provides detailed technical specifications and safety data is key to a successful procurement and utilization strategy.