Specifications: GB/T1610-89
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INDEX/ITEM
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INDEX
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Best quality
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First quality
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Qualified products
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(Cr2O3), content%≥
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99.7
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99.5
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99.0
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Content of insoluble substance in water,%≤
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0.02
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0.03
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0.10
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Sulfate(SO4) content≤
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0.06
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0.15
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0.30
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Sodium(Na) content≤
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0.05
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-
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-
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