L-Alanine
Chemical Name: (s)-2-Amino propionic acid
Molecular Formula: C3H7NO2
Molecular Weight: 89.09
CAS NO: [56-41-7]
Characteristics:
White crystalline powder, odorless, having a peculiar sweetness. Freely soluble in water and in formic acid, almost insoluble in ethanol and in ether.

Quality Standards: AJI92, USP24, CP2000, etc.

Items
Specifications

Identification, (IR)
Positive

Assay (C 3 H 7 NO 2 ), %(on dried basis)
99.0~101.0

Specific rotation
+14.3 ~ +15.2

State of solution, %
= 98.0

Chloride(as Cl), %
= 0.020

Ammonium (as NH4), %
= 0.02

Sulphate (as SO4), %
= 0.020

Iron(as Fe), ppm
= 10

Heavy metals (as Pb), ppm
= 10

Arsenic(as As2O3), ppm
= 1

Other amino acids
Meets the requirements

Loss on drying, %
= 0.20

Residue on ignition(as sulphated ash), %
= 0.10

pH value ( 1.0g /20mL water)
5.7~6.7