Carboxy Methyl Cellulose ( CMC ) is synthesized by the alkali-catalyzed reaction of cellulose with chloroacetic acid. The polar (organic acid) carboxyl groups render the cellulose soluble and chemically reactive. The functional properties of Fooding Carboxy Methyl Cellulose(CMC) depend on the degree of substitution of the cellulose structure (i.e., how many of the hydroxyl groups have taken part in the substitution reaction), as well as the chain length of the cellulose backbone structure and the degree of clustering of the carboxymethyl substituents. 

CMC has a high ability to control water loss. In particular, PAC is a highly effective fluid loss reducer at lower dosages. You can control the loss of water to a higher level. It does not affect other properties of the mud.
The formed mud cake is of good quality, strong and tough.

It has good temperature resistance and excellent salt resistance. Under a certain salt concentration, it still has a good ability to reduce water loss and maintain a certain rheology. Compared to soluble in salt water and soluble in water, the viscosity hardly changes. Particularly suitable for offshore drilling and deep well requirements.
It can well control the rheological properties of the mud. It has good non-Newtonian fluidity.

In addition, KELAIDE® CMC is used as a cementing fluid to prevent fluids from entering pores and fractures. It is used as a fracturing fluid to control fluid loss into the well.

1. "KELAIDE®" CMC is applied to water-based latex paint. It can meet the rheological properties of a certain flow under the action of brush or roller shear force.
   It can control viscosity and suspension.
   3. Generally, CMC accounts for 1-3% in water-based paints and coatings.

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CMC E466 Description:

Carboxymethyl cellulose (CMC) or cellulose gum is a cellulose derivative with carboxymethyl groups (-CH2-COOH) bound to some of the hydroxyl groups of the glucopyranose monomers that make up the cellulose backbone. It is often used as its sodium salt, sodium carboxymethyl cellulose.

CMC E466 Application

In foods, Sodium Carboxymethyl Cellulose CMC is used in food science as a viscosity modifier or thickener, and to stabilize emulsions in various products including ice cream. As a food additive, Sodium Carboxymethyl Cellulose CMC has E number E466. 

Sodium Carboxymethyl Cellulose CMC is also a constituent of many non-food products, such as personal lubricants, toothpaste, laxatives, diet pills, water-based paints, detergents, textile sizing, and various paper products.Sodium Carboxymethyl Cellulose CMC is used primarily because it has high viscosity, is nontoxic, and is generally considered to be hypoallergenic as the major source fiber is either softwood pulp or cotton linter.

Sodium Carboxymethyl Cellulose CMC is used extensively in gluten free and reduced fat food products.

In laundry detergents, Sodium Carboxymethyl Cellulose CMC is used as a soil suspension polymer designed to deposit onto cotton and other cellulosic fabrics, creating a negatively charged barrier to soils in the wash solution.

In Pharmaceuticals,Sodium Carboxymethyl Cellulose CMC is also used in pharmaceuticals as a thickening agent, and

In the oil-drilling industry as an ingredient of drilling mud, where it acts as a viscosity modifier and water retention agent.