Type: | Biological Buffer |
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Appearance: | Powder |
Grade Standard: | Reagent Grade |
Purity: | 99.63% |
Water Content: | 0.18% |
Dry Weight Loss: | 0.25% |
Samples: |
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Customization: |
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Point of melting: | >300 °C(lit.) |
Density of density: | 1.1809 (rough estimate) |
Pressure of vapor: | 0Pa at 25ºC |
Index of refraction: | 1.5250 (estimate) |
Storage conditions: | room temp |
Point of flash: | >110ºC |
form: | White powder |
PH value: | 3.0-7.0 (20ºC, 0.5M in H2O) |
Acid-base indicator discoloration ph range: | 3 - 7 |
Coefficient of acidity (pKa): | 10.4(at 25ºC) |
Solubility of water: | 9 g/100 mL (20 ºC) |
Maximum wavelength (λmax): | λ: 260 nm Amax: ≤0.04λ: 280 nm Amax: ≤0.04 |
LogP: | 0.3 at 25ºC |
Properties | of standard | Result of Analysis |
Appearance | White crystalline powder | White crystalline powder |
Assay | 99.0-101% | 99.63% |
Water Content | ≤0.3% | 0.18% |
losson drying | ≤0.1% | 0.25% |
Melt point | Point of melting300ºC(decomposition) | 300ºC |
solubility (1.0M aqueous) | , | , |
PH(1%) | 5.0-6.0 | 5.58 |
(Pb) | ≤0.0005 | 0.0002 |
/260nm (Ultraviolet absorbance) |
≤0.05 | 0.014 |
/280nm (Ultraviolet absorbance) |
≤0.03 | 0.012 |
: Conclusion: Meet the requirement |
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