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| Specifications︰ | Items Specifications
Appearance White to off-white crystalline powder
Solubility Free soluble in water
Clarity and color of the solution ≤7B
Melting point 194.0-202.0℃
Loss on drying 0.5% max
PH 2.3-2.7
Iron ≤60 ppm
Residue on ignition 0.1% max
Heavy metals 10 ppm max
Assay 99.0% min
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