Description

Products Description

Sodium carboxymethyl cellulose, referred to as carboxymethyl cellulose (CMC), is a kind of high polymer fiber ether obtained by chemical modification of natural cellulose. Its structure is mainly composed of D-glucose units connected by β (1→4) glycosidic bonds.

CMC is a white or milky white fibrous powder or granules with a density of 0.5-0.7 g/cm3. It is almost odorless and tasteless and hygroscopic. It is easily dispersed in water to form a transparent colloidal solution and is insoluble in organic solvents such as ethanol. The pH of a 1% aqueous solution is 6.5-8.5. When the pH is >10 or <5, the viscosity of the slurry is significantly reduced, and the performance is best at pH=7. It is thermally stable. The viscosity rises rapidly below 20°C and changes slowly at 45°C. Heating for a long time above 80°C can denature the colloid and significantly reduce the viscosity and performance. It is easily soluble in water and the solution is transparent; it is very stable in alkaline solutions and is easily hydrolyzed when it encounters acids. Precipitation will occur when the pH value is 2-3, and it will also react to precipitate when it encounters multivalent metal salts.

Products feature

Thickener And Paste Carboxymethyl Cellulose

(I) CMC has good stability

In cold foods such as popsicles and ice cream, using CMC can control the formation of ice crystals, increase the expansion rate, maintain uniform and consistent tissue, resist melting, have a delicate and smooth taste, and whiten the color. In dairy products, whether it is flavored milk, fruit milk or yogurt, it can react with protein within the isoelectric point range of pH value (PH4.6) to form a complex structure, which is beneficial to the stability of the emulsion and improve the impedance of protein.

(II) CMC can be compounded with other stabilizers and emulsifiers.

In food and beverage products, general manufacturers use a variety of stabilizers, such as xanthan gum, guar gum, carrageenan, dextrin, etc., and emulsifiers such as monostearate glyceride, sucrose fatty acid esters, etc. for compounding. It can complement each other's advantages, play a synergistic role, and reduce production costs.

(III) CMC has pseudoplasticity

(III) CMC has pseudoplasticity
The viscosity of CMC is reversible at different temperatures. When the temperature rises, the viscosity of the solution decreases, and vice versa. When shear force exists, the viscosity of CMC decreases, and as the shear force increases, the viscosity decreases. These properties enable CMC to reduce the load of equipment and improve the homogenization efficiency during stirring, homogenization, and pipeline transportation, which is unmatched by other stabilizers.

Products application

Carboxymethyl cellulose (CMC) is synthesized from fibers (fly/short cotton linters, pulp, etc.), sodium hydroxide, and monochloroacetic acid. According to different uses, CMC has three specifications: pure product purity ≥97%, industrial product purity 70-80%, and crude product purity 50-60%. CMC has excellent properties in food such as thickening, suspension, adhesion, stabilization, emulsification and dispersion. It is the main food thickening and stabilizing agent for dairy drinks, ice products, jams, jellies, juices, flavorings, alcoholic beverages and various canned foods..

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