L-茶氨酸3081-61-6
Item
Standard
Analysis data
Appearance
White
crystalline powder
Conforms
Solubility
(1.0g/20ml H2O)
Clear Colorless
Conforms
Specific
rotation(a)D20
(C=1 , H2O)
+7.5o
to +8.5o
+7.9o
Assay
98.0-102.0%
99.2%
Melting
Point (oC)
200oC
to 210 oC
Conforms
Heavy
metals(Pb)
Not
more than 20ppm
10ppm
Chloride(C1)
Not
more than 0.02%
0.012%
Iron(Fe)
Not
more than 10ppm
8ppm
Arsenic(As2O3)
Not
more than 4ppm
<4ppm
Moisture
Not
more than 1.0%
0.6%
Residue
on ignition
Not
more than 0.2%
0.07%
Total
plate count
Not
more than 1,000cfu/g
Conforms
Yeast
and mold
Not
more than 100cfu/g
Conforms
PH
5.0-6.0
5.4
Conclusion
The
product conforms to the standard
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