DL-Pyr amino acids

amino acids
Product Name: H-DL-Pyr-OH CAS#: 149-87-1
Synonyms: DL-Pyroglutamic acid Molecular Formula: C5H7NO3
Molecular Weight: 129

Specification: (Reference Standard: AJI92)
Items
Standard
Analysis data

Appearance
White crystalline powder
Conforms

Melting Point(oC)
160.0 to 162.0oC
160.5oC

Chloride(C1)
Not more than0.02%
0.01%

Ammonium(NH4)
Not more than0.02%
Conforms

Sulfate(SO4)
Not more than 0.02%
0.005%

Heavy metals(Pb)
Not more than 10ppm
Conforms

Iron(Fe)
Not more than 10ppm
6ppm

Arsenic(As2O3)
Not more than 1ppm
Conforms

Loss on drying
Not more than 0.50%
0.36%

Residue on ignition
Not more than0.1%
Conforms

Assay
98.0-101.0%
99.1%