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Appearance
|
White crystalline powder
|
|
Assay (alkalimetric)
|
99.0-101.0%
|
|
Insoluble matter
|
Max 0.02%
|
|
Residue on ignition
|
Max 0.1%
|
|
Chloride (Cl)
|
Max 0.001%
|
|
Salicylic acid (C7H6O3)
|
Max 0.04%
|
|
Heavy metal (as Pb)
|
Max 0.002%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Solubility (10% in water)
|
Clear colourless
|