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Appearance
|
White or almost white crystalline powder
|
|
Specific optical rotation ([α]20/D; 10% in water; on dried substance)
|
+54.4 to +55.9°
|
|
Water (H2O)
|
4.8 - 5.4%
|
|
Free acid
|
Max 0.25 ml N%
|
|
Insoluble matter
|
Max 0.005%
|
|
Alcohol soluble impurities
|
Max 0.2%
|
|
Sulphated ash
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Max 0.3%
|
|
Nitrogen compounds (as N)
|
Max 0.02%
|
|
Arsenic (As)
|
Max 0.0001%
|
|
Copper (Cu)
|
Max 0.00005%
|
|
Iron (Fe)
|
Max 0.0002%
|
|
Lead (Pb)
|
Max 0.00005%
|