.jpg) CAS No.: [ CAS 1317-61-9 ]
Molecular formula: Fe3O4
Molecular weight: 231.53
Property: black crystal; soluble in acid, insoluble in water and alcohol, ether.
Uses: pigment and polishing agent
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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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Fe3O4
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≥98.0%
|
|
2
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(SO42-)
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≤0.10%
|
|
3
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(Insolubles in HCl)
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≤0.20%
|
|
4
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(Solubles in water)
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≤0.20%
|
|
5
|
(Cu)
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≤0.05%
|
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6
|
FeO
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≥21.0%
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|
7
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（Cl-）
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≤0.15%
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|
8
|
SiO2
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≤0.25%
|
|
9
|
P2O5
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≤0.06%
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Enterprise standard: Factory standard
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