D-焦谷氨酸4042-36-8

Item

Standard

Analysis data

Appearance

White crystals

Conforms

Specific rotation[α]D/20

(C=2  in H2O)

+10.8°to +12.3°

+11.65°

Melting Point (ºC)

159 to 161 ºC

160ºC

Chloride(C1)

Not more than 0.02%

0.005%

Sulfate(SO4)

Not more than 0.02%

0.005%

Iron(Fe)

Not more than 10ppm

8ppm

Heavy metals(Pb)

Not more than 10ppm

<10ppm

Arsenic(As2O3)

Not more than 1ppm

<1ppm

Loss on drying

Not more than 0.50%

0.25%

Residue on ignition

Not more than 0.10%

0.08%

Assay

98.0%～101.0%

99%

Conclusion

The product conforms to the standard,  the method of test consult AJI92