The preparation of iron oxide pigments, especially red iron oxide, in the laboratory usually involves a series of chemical reactions and operation steps. The following is a simplified protocol for preparing red iron oxide in the laboratory based on conventional chemical principles:

1. Experimental purpose

Prepare red iron oxide pigment and understand the principles of related chemical reactions.

2. Experimental principle

Red iron oxide is mainly produced by the stable existence and coloration of iron oxide at high temperature, and the common form is Fe₂O₃. In the laboratory, it can be prepared by heating and decomposing iron hydroxide (such as Fe(OH)₃) in air.

The preparation of iron oxide pigments, especially red iron oxide, in the laboratory usually involves a series of chemical reactions and operation steps. The following is a simplified protocol for preparing red iron oxide in the laboratory based on conventional chemical principles:

1. Experimental purpose

Prepare red iron oxide pigment and understand the principles of related chemical reactions.

2. Experimental principle

Red iron oxide is mainly produced by the stable existence and coloration of iron oxide at high temperature, and the common form is Fe₂O₃. In the laboratory, it can be prepared by heating and decomposing iron hydroxide (such as Fe(OH)₃) in air.