L-Arginine Base, l-arginine, cas 74-79-3 Molecular Weight,174.20 CAS No:74-79-3 Characteristics:White crystalline powder. L-Arginine ... Base, l-arginine, cas 74-79-3Chemical NameL-2-Amino-5 ... º~ +27.9ºLoss on drying, %≤0.5Transmittance, % ≥98.0Chloride (as Cl), %≤0.02Sulfate (as SO4), %≤0.02Ammonium as (as NH4), %≤0 ...