Appearance:
White or almost white granules.
Assay (HPLC):
"as is": 84.5 - 86.5%
"on dry":
97 .5 - 102.0%.
Absorbance at 425 nm:
(10% w/v in buffer pH 9.2 after
filtration, measured in a 1 cm cell)
<0.050.
Appearance of solution: (Ph.Eur.):
Not more opalescent than
reference suspension II.
pH (Ph.Eur.):
3.5 - 5.5.
Wateractivity (Novasina TH 200):
<0.3 at 25 °C.
Dimethylaniline:
absent.
Particle size distribution (sieve method):
max 40%: < 250 µm
60-95%: 250 - 1000 µm
min 95%: < 1000 µm
Tapped bulk density (DIN ISO 787):
> 0.80 g/ml.
Shelf life:
Minimum 4 years in the original packaging under
'storage conditions'.
Storage conditions:
below 25 °C, protected from light and
moisture.