CMC, also known as Carboxymethyl Cellulose, is a water-soluble polymer that is used as a thickening, emulsifying, and stabilizing agent in various technical industries. In the construction industry, CMC is used as an admixture in cement-based products, such as concrete and mortar. It helps to improve the workability, strength, and setting time of these products, making them easier to work with and providing better performance over time.

In the oil drilling industry, CMC is used as a fluid loss control agent in drilling muds. It helps to maintain the consistency of the mud and prevent fluid loss, leading to more efficient and effective drilling operations.

Overall, CMC is a versatile and useful ingredient in many technical industries, providing a range of functional benefits that help to improve the performance of products and processes.