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Bismuth subgallate
Molecular formula:C7H707Bi
Molecular weight:412.13
Descriptio,: Brilliant yellow powder,no smell or taste,almost not dissolve in water,alcohol ether and chloroform but dissolve in weak lye
Usage:For astringent and antiseptic,as well skin disease like eczema etc.
Quality standard:USP
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Test
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Specification
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Loss on dry
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≤7.O%
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Nitrate
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Accord with require
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(As) Arsenic
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≤7.5ppm
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Alkalies&Alkalin earth metals
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≤0.5%
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(Cu) Copper
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Accord with require
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(Ag) Silver
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Accord with require
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(Pb)Lead
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Accord with require
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Free gallic acid
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≤O.5%
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(以Bi203计)Content of Bi203
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52%一57%
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