White crystalline granule or powder
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Description
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White crystalline granule or powder
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Assay(as C4H6O5)
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99.0%~100.5%
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Specific rotation [α]D 25℃
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-0.10°~ +0.10°
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Heavy Metals(as Pb)
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10mg/kg max
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Fumaric acid
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1.0% max
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Residue on Ignition
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0.1% max
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Maleic acid
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0.05% max
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Water-insoluble Matter
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0.1% max
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Arsenic (as As2O3)
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4mg/kg max
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Sulphate
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300mg/kg max
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Chloride
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100mg/kg max
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Initial melting point
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127.0 ℃min
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