In the demanding fields of pharmaceutical synthesis and advanced chemical manufacturing, the quality of raw materials and intermediates directly dictates the success and reliability of the final product. For professionals sourcing 5-Bromo-2-chlorophenol (CAS 183802-98-4), understanding its key quality specifications is paramount. As a prominent chemical supplier, we emphasize transparency and adherence to rigorous standards. This guide outlines the critical parameters you should look for when purchasing this vital intermediate.

Key Quality Specifications for 5-Bromo-2-chlorophenol

When evaluating suppliers and products, focus on these essential specifications for 5-Bromo-2-chlorophenol:

  • Appearance: Typically described as light yellow to white crystals. Any significant deviation from this could indicate impurities or improper storage. The visual appearance is the first indicator of product integrity.
  • Purity: This is arguably the most critical specification. For most applications, especially in pharmaceutical synthesis, a purity level of ≥97% or even ≥98% is required. Suppliers should provide a Certificate of Analysis (CoA) detailing the purity, often determined by Gas Chromatography (GC) or High-Performance Liquid Chromatography (HPLC).
  • Melting Point: A sharp melting point within a specified range (e.g., 46-47°C or 56-58°C as reported by different sources) is indicative of high purity. Variations can suggest the presence of impurities or isomers.
  • Molecular Formula and Weight: Confirms the identity of the compound (C6H4BrClO) and its molecular weight (approximately 207.45 g/mol). This information is standard on CoAs.
  • CAS Number: 183802-98-4 is the definitive identifier and must be accurate.
  • Solubility: While often insoluble in water, its solubility in common organic solvents (like ethanol, ether, or DMF) is important for its use in reaction media. This information is usually found in product datasheets or SDS.
  • Storage Conditions: Recommendations often include storage in a cool, dry place, away from light, and under an inert atmosphere to maintain stability. Adherence to these conditions by the supplier and understanding them for your own storage is key.
  • Other Names/Synonyms: Knowing alternative names such as 2-chloro-5-bromophenol or 5-bromo-2-chloro-phenol can help in cross-referencing and ensuring product identification.

The Importance of the Certificate of Analysis (CoA)

A CoA is an official document provided by the manufacturer that confirms the product meets specified standards. It should include:

  • Product Name and CAS Number
  • Batch/Lot Number
  • Test Date and Expiry Date
  • Analytical Methods Used (e.g., GC, HPLC, NMR)
  • Results for each specified parameter (purity, melting point, water content, etc.)
  • Signature of the Quality Control department

Always request and review the CoA for any batch of 5-Bromo-2-chlorophenol before use. For any discrepancies or lack of clear information, do not hesitate to contact the supplier for clarification.

Working with Reputable Manufacturers

As a trusted manufacturer and supplier of chemical intermediates, we prioritize product quality and transparency. Our 5-Bromo-2-chlorophenol (CAS 183802-98-4) is produced and tested to meet stringent industry standards. We encourage all our clients to examine our product specifications and CoAs to ensure they align with their research and production needs. If you are looking to buy this essential intermediate or require a quote, please reach out to us. Our commitment to quality and customer satisfaction makes us your reliable partner in chemical sourcing.