Sodium carboxymethyl cellulose (CMC) is a commonly used excipient in the pharmaceutical industry. It is a type of cellulose derivative and is used as a thickener, stabilizer, emulsifier, and binder in various pharmaceutical products, including tablets, capsules, suspensions, and creams. CMC has a high water-absorbing capacity and can form a gel-like substance when mixed with water. This makes it useful for controlling the flow properties and improving the stability of pharmaceutical formulations. Additionally, CMC has excellent lubricating properties, which makes it ideal for use in tablet production, as it helps to prevent the tablets from sticking to each other during processing. Overall, sodium CMC is a versatile and widely used excipient in the pharmaceutical industry due to its functional properties and ease of use.