For chemists and process engineers involved in organic synthesis and the production of specialized chemicals, a deep understanding of raw material specifications is non-negotiable. Azelaic Acid (CAS 123-99-9) is a critical intermediate, and its precise chemical and physical attributes directly influence reaction outcomes and product quality. This article outlines the essential specifications and guides you on sourcing high-quality Azelaic Acid.

The primary specification for Azelaic Acid is its purity, typically stated as a percentage by weight (Wt%). For most synthesis applications, particularly those in the pharmaceutical and high-end cosmetic industries, a purity of 99.0-100.0% is desired. This ensures minimal interference from impurities during chemical reactions. Another vital parameter is the moisture content, which should be kept to a minimum, usually ≤1.0% Wt%, to prevent unwanted hydrolysis or side reactions.

Other critical specifications to consider when you buy Azelaic Acid for synthesis include limits on ions like chloride (Cl-) and sulfate (SO42-), as well as heavy metals such as iron (Fe) and lead (Pb). For instance, ≤0.0001% Wt% for Chloride and Sulfate, and ≤0.0002% Wt% for Iron and Heavy Metals are common high-purity requirements. These parameters are indicative of the overall quality of the manufacturing process and are crucial for applications sensitive to ionic contamination.

Particle size is another important aspect, especially if the Azelaic Acid is used in solid-state reactions or requires specific dissolution rates. Specifications such as '100% less than 50 micron & not less than 30% less than 30 micron' indicate a controlled particle distribution. When sourcing Azelaic Acid, partnering with a manufacturer like NINGBO INNO PHARMCHEM CO.,LTD. that can provide detailed specifications and a consistent product batch after batch is key to successful chemical synthesis. Always request a Certificate of Analysis (CoA) with your shipment to verify these critical parameters.