乙酰-D-谷氨酸19146-55-5
Item
Standard
Analysis data
Appearance
White crystals or crystalline powder
conforms
Specific rotation[α]20/D
(C=2,H2O)
+14.0°to+17.0°
+14.98°
Transmittance
Not less than 95.0%
98.1%
Heavy metal(Pb)
Not more than 20ppm
<10ppm
Iron (Fe)
Not more than 10ppm
9ppm
Arsenic(As2O3)
Not more than 2ppm
<2ppm
Chloride (Cl)
Not more than 0.020%
0.008%
Sulfate (SO4)
Not more than 0.10%
0.005%
Other amino acids
Chromatographically
not detectable
conforms
Loss on drying
Not more than 0.50%
0.20%
Residue on ignition
Not more than 0.30%
0.1%
Assay
98.0to102.0%
98.5%
pH
1.7to2.8
2.3
Conclusion
The product is according with standard.
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