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Appearance
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White or slightly yellow crystalline powder or waxy solid, having a faint, characteristic odor
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Purity (by GC)
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Min 98.5%
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Solubility
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Insoluble in water, freely soluble in alcohol, in propylene glycol, in chloroform & in ether
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Identifications
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To comply USP tests
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Melting point
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48 – 63°C
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Heavy metal (as Pb)
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Max 0.001%
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Arsenic (As)
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Max 0.0003%
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Sulphated ash
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Max.0.1%
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Residue on ignition
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Max 0.01%
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Organic volatile impurities (By GC)
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To meet the requirement of USP-NF
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