L-Arginine L-Glutamate CAS 4320-30-3 (L-Arg L-Glu) Assay 98.5~101.0%

L-Arginine L-Glutamate (L-Arg L-Glu) (CAS: 4320-30-3) AJI97 Test Method
L-Arginine L-Glutamate, when calculated on the anhydrous basis, contains not less than 98.5 percent and not more than 101.0 percent of L-Arginine L-Glutamate (C11H23N5O6).
Description: White crystals or crystalline Powder, characteristic taste
Freely soluble in formic acid and in water, very slightly soluble in glacial acetic acid, practically insoluble in methanol and in ethanol and in ether.
Dissolves in Dilute Hydrochloric Acid
Solubility (H2O, g/100g): about 38 (20℃)
Identification: Compare the infrared absorption spectrum of the sample with that of the standard by potassium bromide disc method.
Specific Rotation [α]20/D: Sample calculated on the anhydrous basis, C=8, 6mol/L HCl
State of Solution (Transmittance): 0.5g in 10ml of H2O, spectrophotometer, 430nm, 10mm cell thickness.
Chloride (Cl): 0.7g, A-1, ref: 0.40ml of 0.01mol/L HCl
Ammonium (NH4): B-1
Sulfate (SO4): 0.80g, (1), ref: 0.50ml of 0.005mol/L H2SO4
Iron (Fe): 1.5g, ref: 1.5ml of Iron Std. (0.01mg/ml)
Heavy Metals (Pb): 2.0g, (1), ref: 2.0ml of Pb Std. (0.01mg/ml)
Arsenic (As2O3): 2.0g, (1), ref: 2.0ml of As2O3 Std.
Other Amino Acids: Test Sample: 50μg, B-1-a control; L-Glu 0.25μg
Loss on Drying: 300mg, methanol for Karl Fischer Method, B, for 30 minutes
Residue on Ignition (Sulfated): AJI Test 13
Assay: Sample calculated on the anhydrous basis, 110mg, (1), 3ml of formic acid, 50ml of glacial acetic acid, 0.1mol/L HCLO4 1ml=10.711mg C11H23N5O6
pH: 1.0g in 10ml of H2O
Recommended storage limit and condition: Preseved tight containers at controlled room temperature (2 years).