Testing Item

Standard

Result

Appearance
 L-Arginine

White    crystals or crystalline powder

Complies

Identification
 L-Arginine

Infrared    absorption spectrum

Complies

Specific    Optical Rotation

+26.3°    ~ +27.7°

27.4°

Loss    on drying

≤    0.5%

0.23%

Residue    on Ignition

≤    0.3%

0.15%

Chloride

≤    0.05%

<    0.05%

Sulfate

≤    0.03%

<    0.01%

Heavy    Metals

≤    0.0015%

<    0.0010%

Chromatographic    Purity

As    per USP30 (By TLC)

Complies

Individual    Impurity

≤    0.5%

<    0.5%

Total    Impurity

≤    2.0%

<    2.0%

Organic    volatile impurities

Meets    the requirements

Complies

Assay
 L-Arginine

98.5%    ~ 101.5%

99.61%

Specifications (AJI)

Specifications (USP)

Description

White crystals or crystalline powder
 L-Arginine Hcl

Identification
 L-Arginine Hcl

Infrared absorption spectrum

Specific rotation[a]D20 °

+22.1 °- +22.9°

+21.4 °- +23.6°

State of solution

≥ 98.0%

---

Chloride (Cl)

16.58-17.00%

16.5-17.1%

Ammonium (NH4)

≤ 0.02%

---

Sulfate (SO4)

≤ 0.020%

≤ 0.03%

Iron (Fe)

≤ 10PPm

---

Heavy metals (Pb)

≤ 10PPm

≤ 0.002%

Arsenic (As2O3)

≤ 1PPm

---

Other amino acids

Conforms

---

Loss on drying

≤ 0.20%

≤ 0.20%

Residue on ignition (sulfated)

≤ 0.10%

≤ 0.10%

Assay

99.0-101.0%
 L-Arginine Hydrochloride

98.5-101.5%

PH

4.7-6.2

---

Organic volatile impurities

---

Meets the requirements