In the specialized world of advanced materials for organic electronics, the specifications of chemical intermediates are of paramount importance. For 2,7-Dibromo-9H-carbazole (CAS 136630-39-2), understanding its key parameters, particularly purity, is essential for procurement managers and R&D scientists alike. This guide aims to demystify these specifications and highlight why they matter when you buy this crucial carbazole derivative.

The Significance of Purity for 2,7-Dibromo-9H-carbazole

2,7-Dibromo-9H-carbazole is a building block used in the synthesis of polymers and small molecules for applications such as Organic Light-Emitting Diodes (OLEDs), Organic Field-Effect Transistors (OFETs), and Organic Photovoltaics (OPVs). In these high-performance devices, even minute impurities can act as defects, disrupting charge transport, quenching luminescence, or catalyzing degradation pathways. Therefore, sourcing material with a high purity level, typically exceeding 98%, is a fundamental requirement.

Suppliers will usually indicate purity using analytical techniques like High-Performance Liquid Chromatography (HPLC). A purity of '≥98.0% (HPLC)' means that at least 98% of the sample, as detected by HPLC, is the target compound. Other common analytical data provided includes:

  • Melting Point: For 2,7-Dibromo-9H-carbazole, a sharp melting point range, often around 230-234 °C, indicates good purity and crystalline structure. Deviations or a broad melting range can suggest the presence of impurities.
  • Molecular Formula (C12H7Br2N) and Molecular Weight (approx. 325 g/mol): These are basic identifiers that confirm the chemical identity of the compound.
  • Appearance: Often described as an off-white or white powder, the visual appearance can be a preliminary indicator of quality.
  • CAS Number (136630-39-2): This unique identifier is crucial for accurate identification and sourcing.

Interpreting Technical Data and Sourcing Strategies

When you are ready to buy 2,7-Dibromo-9H-carbazole, carefully review the Certificate of Analysis (CoA) provided by the supplier. This document details the actual tested values for purity and other key parameters for a specific batch. Understanding these specifications allows you to confidently select a material that meets your synthesis requirements and ensures optimal performance in your target electronic devices.

For businesses seeking a reliable supplier, particularly for bulk quantities, consider manufacturers based in China who specialize in electronic chemicals. They often provide comprehensive product data and can offer competitive pricing. When making an inquiry, always ask for the latest CoA and be prepared to discuss your specific purity needs. By paying close attention to these specifications, you can ensure that your investment in 2,7-Dibromo-9H-carbazole translates directly into successful material development and high-performing electronic components.