What is iron oxide red ?

There are two kinds of iron oxide red, natural and artificial. It is pure iron oxide, with excellent light resistance, high temperature resistance, and resistance to atmospheric influences, foul gases, and all alkalis. Mainly used for the coloring of paint, rubber, plastic, construction, etc.

Basic Information

Iron Oxide Red (Iron Oxide Red)

Chemical Properties:

Molecular formula (Formula): Fe2O3

Molecular Weight: 159.69

CASNo.:1332-37-2

EINECS Number: 215-570-8

Physical properties

There are both natural and man-made. Naturally called Xihong, it is basically pure iron oxide and is a red powder. due to production methods andDifferent operating conditions, their crystal structure and physical properties are very different, the color changes from orange to blue to violet.

between. Great hiding power and tinting power. Density 5-5.25. It has excellent light resistance and high temperature resistance, and is resistant to atmospheric influence and pollution.Gas, resistant to all alkalis. It will only gradually dissolve when heated in concentrated acid.

Basic performance

Appearance: orange-red to purple-red trigonal powder. There are two kinds of natural and synthetic. The natural one is called Xihong, with a relative density of 55.25.

Fineness 0.4~20um. Melting point 1565 (decomposition). Oxygen is released when burning, which can be reduced to iron by hydrogen and -carbon oxide. insoluble in water, soluble In hydrochloric acid, sulfuric acid, slightly soluble in nitric acid and yeast. It has excellent light resistance, high temperature resistance, acid resistance, alkali resistance and rust resistance. good dispersion, Strong tinting strength and covering power, no oil permeability and water permeability. Nontoxic. The maximum allowable concentration in the air is 5mg/m3.

The main purpose

1. In the building materials industry, it is mainly used for colored cement, colored cement floor tiles, colored cement tiles, imitation glazed tiles, concrete floor tiles, colored Mortar, colored asphalt, terrazzo, mosaic tiles, artificial marble and wall painting, etc.;

2. It is used for coloring and protecting substances of various coatings, including water-based interior and exterior wall coatings, powder coatings, etc.; it can also be used for oil-based paints including ringOxygen, alkyd, amino and other primers and topcoats; can also be used for toy paints, decorative paints, furniture paints, electrophoretic paints and enamels. Iron red primer With anti-rust function, it can replace high-priced red red paint and save non-ferrous metals.

3. For the coloring of plastic products, such as thermosetting plastics and thermoplastics, and the coloring of rubber products, such as automobile inner tubes, aircraft interiorstires, bicycle inner tubes, etc.

4. It is used for high-grade fine grinding materials, used for polishing precision hardware instruments, optical glass, etc. High purity is the main Base material for smelting various magnetic alloys and other high-grade alloy steels. It is calcined at high temperature by mixing ferrous sulfate or iron oxide yellow or iron.obtained, or made directly from a liquid medium.