SICHUAN TONGSHENG AMINO ACID CO.,LTD
Reference Standard
Product Name: H-DL-Pyr-OH
CAS#: 149-87-1
Synonyms: DL-Pyroglutamic acid
Molecular Formula: C5H7NO3
Molecular Weight: 129
Reference standard: AJI92
Specification:
|
Items |
Standard |
|
Appearance |
White crystalline powder |
|
Melting Point(ºC) |
160.0 to 162.0ºC |
|
Chloride(C1) |
Not more than0.02% |
|
Ammonium(NH4) |
Not more than0.02% |
|
Sulfate(SO4) |
Not more than 0.02% |
|
Heavy metals(Pb) |
Not more than 10ppm |
|
Iron(Fe) |
Not more than 10ppm |
|
Arsenic(As2O3) |
Not more than 1ppm |
|
Loss on drying |
Not more than 0.50% |
|
Residue on ignition |
Not more than0.1% |
|
Assay |
99.0-101.0% |
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