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