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CMC Easy To Absorb Water
Nov 01, 2017

CMC Easy to absorb water

Carboxymethyl cellulose sodium in English abbreviated as cmc, is a representative cellulose ether, belonging to the polymer anionic electrolyte. Speaking of which, we may wish to understand the solubility of its next.

cmc easy to absorb water, has a good water-soluble, soluble in cold water or hot water into a colloidal solution. Insoluble in methanol, ethanol, copper, chloroform and benzene and other organic solvents. The degree of substitution is an important factor affecting its water solubility, and the effect of viscosity on water solubility is also great. Usually in the viscosity of 25mPa.s-50000mPa.s between the degree of substitution in the 0.3 or so, was alkali-soluble. Degree of substitution greater than 0.4 is water-soluble. With the increase in degree of substitution, the transparency of the solution is also improved accordingly.

cmc dissolved, and other polymer dielectric, in the dissolution, the first expansion phenomenon, and then gradually dissolved. So in the preparation of the solution, the particles should be uniform wetting in order to quickly dissolve. Otherwise, it is swollen in aqueous solution, the particles adhere to each other to form a strong film or micelles, so that particles are not easy to disperse, resulting in difficulties in dissolution.

Since cmc easy to absorb moisture dissolved, then we must pay attention to the storage of products do not put it in a humid environment, the product seal must be good, the surface of the impact of the use of moisture effect. CMC storage and transportation if not, then the use of the latter part of the effect is bound to bring some impact. So be sure to master the use of storage and transportation of relevant knowledge, the following for everyone to briefly introduce as a reference.

1, CMC according to its molecular weight or degree of substitution, can be completely dissolved or insoluble polymer, it is because of its outstanding solubility, so this product is strictly prohibited in contact with water storage, or will be gelled or partially dissolved And can not be used.

2, transport rain, loading and unloading is strictly prohibited use hook. Long-term storage of this product combined with the pressure, unpacking may occur when the agglomeration, will cause inconvenience but will not affect the quality.

3, there is the basic principle of transporting chemicals, the product storage requirements stored in a ventilated, dry place.

CMC storage and transportation with its nature has a great relationship, such as this highly soluble items, other considerations are the general principles of storage, transportation, is common, so we must prevent the CMC and water contact. Carboxymethyl cellulose is a water-soluble food additives, widely used, many users have a question, that is, whether he is harmful to the human body, on this issue we are here to introduce a brief reference below.

Carboxymethyl cellulose with chemical inert and physiological inertia, do not participate in physiological metabolism; CMC production of raw materials are refined cotton, chloroacetic acid and NaOH, although chloroacetic acid is highly toxic, but the reaction of alkali is excessive, there will be no residue, and The production process of high concentrations of alcohol as solvent and high temperature treatment will not have microbial contamination, so carboxymethyl cellulose is harmless to the human body.

Carboxymethyl cellulose is widely used in food, toothpaste, paper, oil, printing and dyeing, washing and coating industry.