Appearance | white, crystalline powder |
Purity (HPLC) | ≥99 % |
Specific rotation [α]20D (c=1, H2O, 20 °C) | -18.0 to -16.0 ° |
Solution (20 % in water) | clear, colourless |
pH value (1 % in H2O) | 5.0-7.0 |
Melting point | 87-93 °C |
Absorbance | |
240 nm | ≤0.65 |
260 nm | ≤0.010 |
280 nm | ≤0.010 |
340 nm | ≤0.010 |