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Personne àcontacter Kelly
NO 1, HUANG XIAO BEI ROAD, Wuhan, Hubei
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Appearance
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white crystalline
powder
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Identification
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IR
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Specific rotation
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**6.5~**9.*0(*0% aqueous
solution)
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Assay
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**0±2%
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pH-value
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2.0~3.0(5% aqueous
solution)
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Drying Loss
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≤0.5%
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Residue on ignition
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≤0.5%
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Heavy metal
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≤*0ppm
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Arsenic
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≤2ppm
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