Melting point 164℃～170℃
(abs. max. 262nm,ε=9,ε=10,000±2%, PH7)：
A250/A260 0.72～0.76
A280/A260 0.34～0.38
Specific rotation [a]20/D +8 ～ +10 °(C=2, W/V in H2O)
transmittance　　　　　　　　　　≥98.0%(430nm, C=1, W/V, in H2O)
Loss on drying ≤0.5%
Residue On Ignition ≤0.1%
Heavy Metals(as pb)： ≤10ppm
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