Carboxymethyl cellulose (CMC) is a carboxymethylated derivative of cellulose, also known as cellulose gum, and is the most important ionic cellulose gum.

The global food-grade carboxymethyl cellulose (CMC) market size was approximately $555 million in 2025 and is expected to grow at a compound annual growth rate (CAGR) of 3.2% over the next six years, reaching $693 million by 2031.

​The future development direction of HPMC With the continuous advancement of science and technology and the continuous growth of people's demand for high-performance materials, hydroxypropyl methyl cellulose (HPMC) is a multifunctional chemical material, and its application fields and technology development are also constantly expanding and deepening.

The etherification method is the mainstream preparation method for hydroxypropyl methylcellulose, which can be subdivided into continuous etherification method, one-step etherification method, etc.

The open time of hydroxypropyl methylcellulose (HPMC) refers to the period of time during which the material can remain operable after application. During this time period, the material can be freely applied, shaped, and other operations without losing operability due to rapid drying. The opening time of HPMC is affected by various factors, including temperature, humidity, viscosity, etc. ‌