双甘氨肽?556-50-3
Item
Standard
Analysis data
Appearance
White
crystalline powder
Conforms
State
of solution
(Transmittance)
Clear
and colorless
Not
less than 95.0%
Conforms
98.9%
Chloride
(Cl)
Not
more than 0.020%
0.012%
Ammonium
(NH4)
Not
more than 0.02%
<0.02%
Sulfate
(SO4)
Not
more than 0.020%
0.005%
Iron (Fe)
Not
more than 30ppm
7ppm
Heavy
metal(Pb)
Not
more than 10ppm
8ppm
Arsenic(As2O3)
Not
more than 1ppm
<1ppm
Other
amino acids
Chromatographically
Not
detectable
Conforms
Loss
on drying
Not
more than 0.20%
0.15%
Residue on ignition(sulfated)
Not
more than 0.15%
0.1%
Assay
98.5
to100.5%
99.0%
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