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Appearance
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White to almost white powder
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Solubility
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Soluble in water with clear solution
|
|
Specific optical rotation
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+54.40° to 55.90°
|
|
Loss on drying
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Not more than 0.5%
|
|
pH (2% solution)
|
6.0 – 7.0
|
|
Sulphated ash
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Max. 0.1%
|
|
Heavy metal (as Pb)
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Not more than 8 ppm
|
|
Arsenic
|
Not more than 1 ppm
|