Physical Properties
Physical state at 20 °C
|
Solid
|
Colour
|
White crystalline
|
pH value
|
5.5 - 7.5
|
Melting point/ Freezing point [°C]
|
300 °C
|
Solubility in water [% weight]
|
Soluble in water
|
Specifications
Appearance A white crystalline powder
Assay (acidimetric; on anhydrous basis) Min 99%
Identity (IR) Conforms
pH (10% solution) 5.5 - 7.5
UV transmittance (0.005 mol/L; 1cm; water)
at 200 nm Min 70%
at 220 nm Min 90%
at 250 nm Min 98%
Loss on drying (at 120°C) Max 2%