| Description |
A very fine, pale buff or cream coloured to greyish-white powder, free or almost free from gritty particles
|
Identification |
A gelatinous precipitate is produced
|
| pH (2% w/v solution in water) |
9.0 to 10.5
|
Sedimentation value |
NMT 2 ml
|
| Swelling power |
NLT 24 ml
|
Coarse particles |
The weight of the matter on the sieve is not more than 0.1 g (NMT 0.5%)
|
| Heavy metals |
NMT 50 ppm
|
Microbial contamination |
1 g is free from Escherichia coli
|
| Loss on drying (at 105°C) |
NMT 15.0%
|