Mud triangle is a ceramic tool used in chemical experiments to support crucibles for heating. It is triangular in shape, with a flat bottom and three sharp corners at the top, used to stabilize the crucible. Mud triangles can withstand high temperatures, generally up to 1000 degrees Celsius, and are suitable for use on gas lamps, alcohol lamps, or electric furnaces. In chemistry teaching, the mud triangle is an important tool for conducting operations such as burning, ashing, and melting of substances. It can ensure the safety and accuracy of experiments, allowing students to intuitively observe the changes of substances at high temperatures. It is a commonly used teaching tool in chemistry experiments.