.jpg) CAS No.: [ CAS 7782-63-0 ]
Molecular formula: FeSO4 . 7H2O
Molecular weight: 278.03
Property: blue-green crystal or particle, no smell;air-slake; soluble in water, nearly insoluble in alcohol.
Uses: chromatographic analysis agent,assay determination platinum,selenium,nitrite, reducing agent
Enterprise standard: Factory standard
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Ordinal
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The　examination iterm
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Factory standard
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1
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(Appearance)
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(Light blue-green crystal)
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2
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(FeSO4 . 7H2O)(Content)
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≥99.0--101.1%
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3
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(Insolubles in water)
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≤0.02%
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4
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(Cl-)
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≤0.003%
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5
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(Fe3+)
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≤0.02%
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6
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(Cu)
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≤0.002%
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7
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(Alkaline-earth metal)
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≤0.10%
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8
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(As)
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≤0.002%
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9
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(Zn)
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≤0.01%
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10
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(Mn)
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≤0.05%
|
|
11
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（Pb)
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≤0.005%
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