For professionals engaged in organic synthesis, particularly in the pharmaceutical and agrochemical sectors, the selection of high-quality raw materials is paramount. 3-Chloro-o-xylene (CAS: 608-23-1) is a prime example of an intermediate where precise specifications directly translate to successful synthesis outcomes.

As a widely used building block, 3-Chloro-o-xylene is valued for its role in creating more complex organic molecules. However, its effectiveness hinges on meeting certain critical quality parameters. The most fundamental specification is purity, typically stated as ≥98.0% by Gas Chromatography (GC). This high purity level is crucial because any significant impurities could interfere with reaction mechanisms, lead to undesired side products, or reduce the overall yield of the target compound. For any manufacturer or supplier, demonstrating consistent adherence to this purity standard is non-negotiable.

Beyond purity, other physical and chemical properties also play a role. The appearance, described as a colorless transparent liquid, is a basic visual check. Key parameters like boiling point (around 186°C), flash point (approx. 63.6°C), and refractive index (n20/D ~1.532) are important for process design, safety protocols, and quality assurance. For instance, knowing the exact boiling point helps in designing distillation or separation processes, while the flash point is critical for assessing flammability and implementing appropriate safety measures.

For businesses looking to purchase 3-Chloro-o-xylene, it’s vital to establish clear expectations with suppliers regarding these specifications. Requesting a Certificate of Analysis (CoA) with each batch purchased is a standard practice that verifies the product meets the agreed-upon quality standards. This document typically includes results for assay (purity), moisture content, and other relevant physical properties.

The price of 3-Chloro-o-xylene can vary based on purity, quantity, and supplier. However, prioritizing suppliers that consistently provide high-purity material, even at a slightly higher initial cost, often proves more economical in the long run by preventing downstream issues. Engaging with a reputable supplier in China can offer competitive pricing, but due diligence is essential to ensure quality is not compromised.

In conclusion, when sourcing 3-Chloro-o-xylene (CAS: 608-23-1) for your synthesis needs, focus on the critical specifications: high purity (≥98.0%), accurate physical properties, and a reliable supplier who provides detailed CoAs. This diligence will ensure the integrity of your research and production processes.