For professionals in the chemical and pharmaceutical industries, understanding the detailed specifications of L-Arginine (CAS 74-79-3) is crucial for ensuring product integrity and efficacy. As a dedicated manufacturer and supplier, we aim to demystify these technical requirements, helping you make informed purchasing decisions.

The physical appearance of high-grade L-Arginine is typically described as white rhomboidal (dihydrate) crystals or a white crystalline powder. It is soluble in water and presents a strong alkaline property in its aqueous solution. When sourcing L-Arginine, look for manufacturers that provide comprehensive specifications, including:

  • Assay: Typically ranging from 98.0% to 101.5%, ensuring high purity.
  • Appearance: White crystals or crystalline powder.
  • Specific Rotation: For L-Arginine, the specific rotation at D25 should fall within a defined range, often +26.3° to +27.7°.
  • Loss on Drying: A low percentage, usually ≤0.50%, indicating minimal moisture content.
  • Residue on Ignition: A low limit, typically ≤0.30%, signifying low inorganic impurities.
  • Impurity Limits: Strict limits for Chloride (≤0.05%), Sulfate (≤0.03%), Iron (≤0.003%), and Heavy Metals (≤0.0015%) are standard for pharmaceutical-grade L-Arginine.

These specifications are vital because L-Arginine's effectiveness in applications such as promoting nitric oxide production, supporting cardiovascular health, and aiding wound healing is directly dependent on its purity and chemical integrity. Manufacturers who clearly state these parameters and provide supporting documentation like CoAs are reliable partners.

When you need to buy L-Arginine, selecting a supplier that can consistently meet these demanding specifications is paramount. We, as a leading manufacturer in China, ensure our L-Arginine production adheres to international pharmacopoeial standards. We invite you to contact us to learn more about our product quality and to obtain a quote for your chemical procurement needs.