L-Arginine
Chemical Name and Synonyms:
2-Amino-5-guanidinovaleric acid; 2-Amino-5-guanidinopentanoic acid; Arg; Arginine; L-Arginine; L-(+)-Arginine;
2-Amino-5-guanidinovaleric acid; 2-Amino-5-guanidinopentanoic acid; Arg; Arginine; L-Arginine; L-(+)-Arginine;
Molecular Formula:
C6H14N4O2
Molecular Weight:
174.2022
Melting Point:
223 - 224
Cas No:
[74-79-3]
Characteristics:
White crystals or crystalline powder; Freely soluble in water.
Quality Standards:
USP24, AJI92.
| Item | Specifications (USP24) | Specifications (AJI92) |
| Description | White crystals or crystalline powder | White crystals or crystalline powder |
| Identification | Infrared absorption spectrum | Infrared absorption spectrum |
| Specific
rotation [a]D20° |
+26.3 °- +27.7° | +26.9 °- +27.9° |
| State of
solution /Transmittance |
--- | ≥ 98.0% |
| Chloride (Cl) | ≤ 0.05% | ≤ 0.020% |
| Ammonium (NH4) | --- | ≤ 0.02% |
| Sulfate (SO4) | ≤ 0.03% | ≤ 0.020% |
| Iron (Fe) | ≤ 0.003% | ≤ 10PPm |
| Heavy metals (Pb) | ≤ 0.0015% | ≤ 10PPm |
| Arsenic (As2O3) | --- | ≤ 1PPm |
| Other amino acids | --- | Chromatographically not detectable |
| Loss on drying | ≤ 0.5% | ≤ 0.5% |
| Residue on
ignition (sulfated) |
≤ 0.3% | ≤ 0.10% |
| Assay | 98.5-101.5% | 99.0-101.0% |
| PH | --- | 10.5-12.0 |
| Organic volatile impurities | Meets the requirements | --- |
Packaging and Storage: In 25kgs fiber drum
double polyethylene bags inside; Preserve in well-closed containers, at
controlled room temperature.
Recommended limit: 2 year.
