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Appearance
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White crystals or crystalline powder
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|
Assay (on anhydrous basis)
|
98.5 - 101.5%
|
|
Identity (IR)
|
Passes test
|
|
Residue on ignition
|
Max. 0.4%
|
|
Sulphate (SO4)
|
Max. 0.03%
|
|
Iron (Fe)
|
Max. 0.003%
|
|
Heavy metal (as Pb)
|
Max. 0.0015%
|
|
Related compounds
|
Passes test
|
|
Individual impurities
|
Max. 0.5%
|
|
Total impurities
|
Max. 2.0%
|
|
Specific optical rotation (at 589 nm) (c=8, 6 N HCl) on dried substance
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+5.5° to +7.0°
|
|
Loss on drying (at R.T.; pressure max 5 mm of mercury; 24 hrs)
|
8.0 - 12.0%
|