For any chemical compound, understanding its specifications is fundamental, especially when it's destined for sensitive applications like pharmaceutical synthesis or advanced material development. 4-Ethoxybenzoic Acid (CAS 619-86-3) is no exception. As a key intermediate, its purity, physical form, and adherence to established specifications directly impact the success of downstream processes. This guide outlines the critical details buyers should look for when sourcing this compound.

Key Specifications of 4-Ethoxybenzoic Acid (CAS 619-86-3)

When sourcing 4-Ethoxybenzoic Acid, attention to detail regarding its properties is vital. Here are the key specifications commonly provided by reputable manufacturers:

  • Appearance: Typically described as a White powder or White to off-white crystalline powder. Variations in color can sometimes indicate impurities or differences in the manufacturing process.
  • Purity: This is arguably the most critical specification. Purity levels are usually determined by analytical techniques such as Gas Chromatography (GC) or High-Performance Liquid Chromatography (HPLC). For most applications, a purity of ≥98.0% or, ideally, ≥99.0% is sought. Higher purity ensures fewer side reactions and a cleaner product in synthesis.
  • Melting Point: The reported melting point range is generally between 197-199 °C. A sharp melting point within this range is indicative of high purity.
  • Molecular Formula and Weight: C9H10O3 and 166.18 g/mol, respectively. These are fundamental identifiers of the compound.
  • CAS Number: 619-86-3 is the unique identifier for this chemical, essential for accurate sourcing and regulatory compliance.

Why Purity Matters

The importance of purity cannot be overstated, especially in industries where product integrity is paramount:

  • Pharmaceutical Synthesis: Impurities in intermediates can lead to the formation of unwanted by-products in APIs, potentially affecting drug efficacy, safety, and regulatory approval.
  • Organic Synthesis: High purity ensures predictable reaction outcomes, better yields, and cleaner products, reducing the need for extensive purification steps.
  • Material Science: In polymer and material applications, even trace impurities can alter the physical, thermal, or optical properties of the final material.

Choosing Your Supplier

When you decide to buy 4-Ethoxybenzoic Acid, selecting a supplier that clearly communicates these specifications is crucial. Reputable manufacturers and distributors will readily provide Certificates of Analysis (CoA) with each batch, detailing the actual test results for purity, melting point, and other relevant parameters. Many leading chemical suppliers and manufacturers, especially those in China, offer high-quality 4-Ethoxybenzoic Acid at competitive prices. Thoroughly vetting potential suppliers and requesting samples can help ensure you are obtaining material that meets your exact requirements.

By prioritizing these specifications and working with trusted chemical suppliers, you can ensure that your projects involving 4-Ethoxybenzoic Acid proceed with confidence and achieve the desired outcomes.