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Sodium Carboxymethyl Cellulose CMC Is Widely Used In Various Industries
Edit: Hangzhou Hongbo New Materials Co.,Ltd    Date: May 19, 2017

Sodium Carboxymethyl Cellulose CMC Overview: natural cellulose is chemically modified fiber derivatives, is one of the important water-soluble polymer.

Carboxymethyl cellulose sodium properties: CMC is a white powder, odorless, tasteless, non-toxic. CMC is a macromolecular chemical, can be water swelling, swelling in water, you can form a transparent viscous glue, in the acidity of the performance of neutral. Solid CMC for light and room temperature are more stable, in a dry environment, can be long-term preservation.

Carboxymethyl cellulose sodium, widely used in various industries, in the annual production of industrial development is extremely rapid and gradually increased. Its excellent characteristics of rapid development is inseparable.

Temperature:

CMC can be resistant to temperature drying 140-150 ° C minutes or less, most of the same solution, when the temperature increases, reduce the viscosity of the CMC solution, but these solutions are still stable, when heated, after cooling , Its viscosity will return to the initial viscosity.

②PH value:

CMC is a strong acid acid, if treated with a strong acid management committee, will release the free acid Ho Chi Minh City, this acid is not soluble in water

Knowing that the precipitate occurs only in the case of low pH conditions (about 2.5), if the PH value exceeds this value, it will not precipitate, for example: at a pH of 350 in the acetic acid medium.

Sodium carboxymethylcellulose as a buffer, ion exchange, and if the pH is maintained within the above range, a small amount of acid can be added to the aqueous solution without changing the solubility.

③ Solvent resistance:

Sodium Carboxymethyl Cellulose CMC is insoluble in organic solvents. Even if the reaction can produce some swelling, sodium carboxymethylcellulose does not dissolve, but it can also be added to a percentage of the CMC solution (usually 30-40%) of the water-soluble organic solvent.

④ metal:

Metal salts and CMC, some reactions of hydroxyethylcellulose, the reaction of precipitated corresponding acid salts, copper salts, aluminum salts, stannates, ferrate, silver salts and zirconium salts. CMC calcium and magnesium salts do not react and produce precipitates that can be used in the presence of weak concentrations of water, alkali metal salts, which usually reduce the viscosity of the solution but have a strong concentration of alkali salt that will increase the viscosity of the solution, Sometimes even cause gelling.

⑤ Water content:

CMC is a hygroscopic substance that is placed in air by drying the CMC to absorb 12% of the moisture content of 25% (see main air humidity) to avoid changes in water content caused by changes in water content for a given period of time. The committee should be stored in the original packaging and it is recommended to keep it in a dry place. With the production process, the development of technology perfect, more quality products will come out one after another, more powerful, more extensive, towards the diversified direction of the product.


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