In the dynamic world of chemical synthesis, certain intermediates stand out for their versatility and importance across multiple industries. 3-Chlorophthalic Anhydride (CAS 117-21-5) is one such compound, playing a pivotal role as a precursor in both the pharmaceutical sector and the advanced materials industry, particularly in the creation of polyimide engineering plastics. For research scientists and product formulators, understanding its properties and sourcing options is key to innovation.

The Chemical Significance of 3-Chlorophthalic Anhydride

Chemically, 3-Chlorophthalic Anhydride is an organic compound characterized by its phthalic anhydride structure with a chlorine atom substituted on the aromatic ring. This structural feature imparts specific reactivity, making it an ideal intermediate for further chemical transformations. Its typical form is a white or pale yellow crystalline powder, with a melting point of 123-126 °C and a boiling point of 170 °C. These properties are crucial for chemists designing reaction pathways.

Applications Driving Demand

The demand for 3-Chlorophthalic Anhydride is largely driven by its critical applications:

  • Polyimide Engineering Plastics: This is a significant area where 3-Chlorophthalic Anhydride serves as a key monomer. Polyimides are renowned for their exceptional thermal stability, chemical resistance, and mechanical strength, making them indispensable in aerospace, electronics, and high-temperature applications.
  • Pharmaceutical Intermediates: In the pharmaceutical industry, the compound acts as a vital building block for synthesizing various Active Pharmaceutical Ingredients (APIs). Its specific chemical structure allows for the creation of complex drug molecules, contributing to advancements in medicine. Researchers looking to buy this intermediate for novel drug development can benefit from its reliable supply.
  • Pesticide Intermediates: The agrochemical sector also leverages 3-Chlorophthalic Anhydride for the synthesis of pesticides. Its incorporation can lead to more effective and targeted crop protection solutions.

Sourcing High-Quality Material

For R&D scientists and formulators, obtaining high-purity 3-Chlorophthalic Anhydride is non-negotiable. When searching for a supplier, look for manufacturers that can guarantee purity levels, often exceeding 98% via GC analysis. Reputable suppliers will provide detailed specifications, including CAS number (117-21-5), molecular formula (C8H3ClO3), and molecular weight (182.56). Furthermore, understanding the manufacturer's capabilities, such as production capacity and quality control measures, is essential.

Considerations for Purchase

When you are ready to purchase 3-Chlorophthalic Anhydride, consider partnering with established manufacturers. These suppliers often provide transparent pricing, flexible payment terms, and various shipping options to cater to global research needs. Whether you require small quantities for laboratory synthesis or bulk orders for industrial production, a reliable manufacturer can provide the necessary support. Exploring options to buy this essential intermediate can significantly accelerate your research and product development timelines.

As a dedicated manufacturer and supplier, we offer 3-Chlorophthalic Anhydride meeting stringent quality standards. We invite researchers and formulators to explore our offerings and experience the reliability and quality that our products bring to pharmaceutical and polymer applications. Contact us to inquire about pricing and availability for CAS 117-21-5.