|
Appearance
|
White crystalline powder
|
|
Assay (titration)
|
Min 99.9%
|
|
pK (at 20°C)
|
7.05
|
|
Solubility (20°C)
|
663 g/L (H2O)
|
|
Useful pH range
|
6.2 - 7.8
|
|
DNAase/RNAase
|
Not detectable
|
|
Proteases/Phosphatases
|
Not detectable
|
|
Melting point
|
88 - 90 deg C
|
|
pH (0.1 M solution in water)
|
9.5 - 11
|
|
Water (H2O)
|
Max 0.01%
|
|
Chloride (Cl)
|
Max 0.005%
|
|
Sulphate (S)
|
Max 0.005%
|
|
Aluminium (Al)
|
Max 0.0005%
|
|
Arsenic (As)
|
Max 0.00001%
|
|
Cadmium (Cd)
|
Max 0.0005%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Manganese (Mn)
|
Max 0.0005%
|
|
Lead (Pb)
|
Max 0.0005%
|
|
Zinc (Zn)
|
Max 0.0005%
|
|
UV absorbance (1 cm; 0.1 M in water)
|
|
|
260 nm
|
Max 0.1
|
|
280 nm
|
Max 0.1
|