L-Arginine Base is a free-form amino acid powder with a specified assay of 98.5%–101.5%. It should not be confused with L-Arginine HCl: the two materials differ in chemical form, CAS number, molecular weight, handling characteristics, and formulation requirements.
The page outlines quality controls for nutrition and supplement production. Specific rotation must remain between +26.3° and +27.7°, while loss on drying is capped at ≤0.5%, residue on ignition at ≤0.3%, chloride at ≤0.05%, and sulfate at ≤0.03%.
These parameters allow buyers to assess identity, optical quality, moisture control, and inorganic residues before the material is used in dry blends, tablets, capsules, or powdered nutrition products. Before shipment, the final COA should confirm the agreed grade, assay, microbial standard, and packaging.
