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%