Product Details

Product performance:

Ferroferric oxide is a kind of iron oxide, its chemical formula is Fe3O4, relative molecular mass of 231.54. Ferroferric oxide is the only high school can be magnetized iron compounds. Ferroferric oxide containing Fe2 + and Fe3 +, X ray diffraction experiments show that the ferroferric oxide with trans spinel structure, there is never partial iron acid radical ion in the crystal FeO2 -.

Ferroferric oxide, also known as magnetic iron oxide, iron oxide black, magnets, magnet, magnet, natural mineral types of magnetite. Iron has two valence in ferroferric oxide, for trans spinel structure, namely the Fe Ⅲ [Fe Ⅲ Fe Ⅱ] m1. And ferroferric oxide or conductor, because in magnetite because of Fe2 + and Fe3 + in octahedral position of disordered arrangement is basically, electrons can in iron quickly shift between two kinds of oxidation state, so ferroferric oxide solid has good electrical conductivity.

Physical Properties:

Crystalline solid black, insoluble in water, magnetic, solid has good electrical conductivity.

Wire in the pure oxygen combustion generated ferroferric oxide; (phenomenon: sparks, exothermic, black solid - ferroferric oxide generated. When doing the experiment in the lab attention to experiment to put a layer of fine sand or water in the bottle, the reason is: prevent splash down melt burst bottle!) ; The blue gray clastic mainly scattered around the blacksmith's anvil ferroferric oxide; The steam displacement reaction of iron with high temperature generated ferroferric oxide and hydrogen; The main composition of natural magnetite is ferroferric oxide crystals. Ferroferric oxide is a kind of important common iron compounds. Are stable in the air.

In Fe3O4, iron show two valence, a price of ferrous ions + 2, two iron + 3 valence, so ferroferric oxide were classified as composed with Fe2O3 FeO compounds, can be expressed as FeO · Fe2O3, but can't say with mixture of Fe2O3 FeO, it belongs to pure.

Basic performance:

Say again ferroferric oxide, iron oxide black. Molecular weight 231.54, inverse spinel, cubic crystal system, black solid powder, the density of 5.18 g/cm3. The melting point of 1867.5 K (1867.5 ℃).

Specification:

ITEM NO	Content	Chromatism	Tinctorial strength	Water solubles	PH value	Oil absorption	105℃ Volatile matter	1000℃ 0.5h Heat loss
	Min%	ΔE Max%	Rang%	Max%	Rang	Rang g/100g	Max%	Max%
722	95	1.0	95~105	0.5	5~8	15~25	1.0	7
724	95	1.0	95~105	0.5	5~8	15~25	1.0	7
726		1.0	95~105	0.5	5~8	15~25	1.0	7
722-1		1.0	95~105	0.5	5~8	15~25	1.0