1. Lithium carbonate is the starting material for the production of other important lithium compounds. For example, lithium hydroxide, lithium fluoride, lithium chloride and lithium metal are obtained by further reaction of lithium carbonate. These compounds have a wide range of applications in their respective fields, such as battery manufacturing, glass and ceramics industries, and oil and gas extraction.

2. Lithium carbonate plays a key role in the preparation of organolithium compounds. For example, alkyl lithium, aryl lithium and alkenyl lithium are produced by reacting with lithium carbonate. These

 organolithium compounds are important intermediates in the synthesis of rubber, synthetic resins and other polymer materials. They are also used in the synthesis of pharmaceuticals, pesticides and dyes.

3. Lithium carbonate is also widely used in inorganic synthesis. It can be used as a catalyst for the reaction to promote the reaction of other compounds. It can also be used as a raw material for the preparation of other inorganic compounds such as carbonates of beryllium, caesium, chromium, zirconium, hafnium, tantalum and niobium. These compounds have applications in ceramics, glass, pigments, paints and batteries.

4. Lithium carbonate also plays an important role in polymerisation reactions. It can be used as an initiator or catalyst to control the rate of the polymerisation reaction and the nature of the products. This makes lithium carbonate valuable in the research and development of polymer materials.

5. Lithium carbonate also has applications in industries such as electroplating, flotation agents and oil extraction. In these fields, the role of lithium carbonate is to improve efficiency, product quality and economic benefits.