For procurement managers and R&D scientists in the B2B chemical sector, a thorough understanding of product specifications is non-negotiable when considering a purchase. L-Glutamic Acid Hydrochloride (CAS 138-15-8), a widely used ingredient, has a set of typical properties that ensure its suitability for various applications, from food enhancement to biochemical research. Knowing these parameters helps in selecting the right manufacturer and ensuring product quality.

The most critical specification for L-Glutamic Acid HCl is its assay, which indicates the purity of the compound. Manufacturers commonly offer grades with an assay ranging from 98.5% to 101.5% on a dried basis. This high purity is essential for applications where precise chemical composition is vital, such as in pharmaceutical intermediates or sensitive biochemical assays. When you plan to buy L-Glutamic Acid HCl, always verify this number with the supplier.

Another important characteristic is the loss on drying. For L-Glutamic Acid HCl, a low loss on drying, typically ≤0.5%, signifies minimal moisture content. This is crucial for stability, shelf-life, and accurate weighing during formulation. A lower moisture content ensures the product is not diluted and will perform as expected.

The residue on ignition is another key indicator of purity. A low residue on ignition, usually ≤0.25%, suggests that the product contains minimal inorganic impurities. This is particularly important for applications where even trace amounts of contaminants could interfere with reactions or affect the final product's characteristics.

The appearance itself is a primary visual quality check. L-Glutamic Acid HCl is characteristically a white crystalline powder. Any deviation from this description can indicate potential issues with manufacturing or storage. When sourcing from a supplier, ensure their product matches this description.

Other specifications, such as lead content (e.g., ≤5 mg/kg) and specific rotation (e.g., 25.2°-25.8°), further define the product's quality and suitability for specific markets, especially food and pharmaceutical grades. For businesses looking to purchase L-Glutamic Acid HCl, reviewing these specifications provided by potential manufacturers in China is a vital step in ensuring they receive a product that meets their exact needs and quality standards.