Iron oxide red can be used as a pigment, with rich and adjustable colors and excellent coloring effects. In use, we will find that it has good acid and alkali resistance and strong functionality. Its acid and alkali resistance can be referred to as:
1. The physical properties of iron oxide red have good acid and alkali resistance, and iron red maintains very stable performance at any acid-base strength. In some cases, after exceeding its upper limit temperature, the color brightness will gradually change with the increase of temperature.
2. The selection of iron oxide red should be based on its quality characteristics. Iron red can be used for the processing of paints and coatings, as well as the production of marble and terrazzo. After all, it has excellent coloring ability to protect buildings and plastic products.
3. Light resistance, good dispersibility, odorless, non-toxic. It is difficult for the human body to absorb iron oxide red, so it is harmless to human health.
Iron oxide red is a cubic powder ranging from orange red to purple red. The relative density is 5.24. Melting point 1565 ℃ (decomposition). Insoluble in water, soluble in hydrochloric acid and sulfuric acid, slightly soluble in nitric acid and ethanol. The oxygen released during combustion can be reduced to iron by hydrogen and carbon monoxide. Good dispersibility, strong coloring and covering power. Non oil permeability and water permeability. Temperature resistance, light resistance, acid and alkali resistance.
The preparation methods of iron oxide red include wet and dry methods. Wet process products have small crystals, soft particles, and are easy to grind, making them suitable for use as pigments. Dry crystals are large and hard particles, suitable for magnetic materials and polishing and grinding materials.
Iron oxide red is an inorganic pigment used as an anti rust pigment in the coating industry. It can also be used as a coloring agent for rubber, artificial marble, and terrazzo on the ground, a coloring agent and filler for plastic, asbestos, synthetic leather, and leather polishing solutions, a polishing agent for chemical instruments and optical glass, and a raw material for manufacturing magnetic ferrite components.