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Physical & Chemical properties

Density

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Description of key information

Zinc ferrite has a density of approximately 5.2 g/mL. The test method was DIN EN ISO 787 -10:1995.

Key value for chemical safety assessment

Relative density at 20C:
5.2

Additional information

The result is given as density in unit g/mL. The relative density was calculated according to the following definition.

The relative density D204 of solids or liquids is the ratio between the mass of the substance, determined at 20°C, and the mass of the same volume of water, determined at 4°C. At this temperature the density of water is 0.999975 g/mL.

To convert the density to relative density the following formula is used:

D204= pSubstance(20°C) / pWater(4°C)

The relative density has no dimension.

There is only one data from a poorly documented source available for zinc ferrite, read across with diiron trioxide, triiron tetraoxide and iron hydroxide oxide

is proposed to support this endpoint. The substances are members of the ”Iron Oxides Category”. In regard to structure, physicochemical properties, environmental fate characteristics, ecotoxicity and toxicity, the grouping of diiron trioxide, triiron tetraoxide, iron hydroxide oxide, iron manganese trioxide, manganese ferrite, and zinc ferrite in the "Iron Oxides Category" is justified. Therefore, a read across between these substances to support physico-chemical endpoints for iron manganese trioxide is justified. The density of the following iron oxides is reported: Diiron trioxide 5.25 kg/L; Triiron tetraoxide 5.17 kg/L; Iron hydroxide oxide 4.26 kg/L. From the average of the three stated oxide the density of zinc ferrite was estimated to be ca. 5 g/cm³ at ca. 25°C.