Character
This product is a sodium salt of cellulose carboxymethyl ether, belonging to the anionic cellulose ether. It is a white or milky white cellulose powder or particle with a density of 0.5-0.7 grams per cubic centimeter, almost odorless, tasteless, and hygroscopic. Easy to disperse in water into a transparent gel like solution, insoluble in organic solvents such as ethanol. The pH of the 1% aqueous solution is 6.5-8.5. When the pH is greater than 10 or less than 5, the viscosity of the slurry significantly decreases, and the performance is best at pH=7. It is thermally stable, with a rapid increase in viscosity below 20 ℃ and a slower change at 45 ℃. Prolonged heating above 80 ℃ can cause colloid denaturation and a significant decrease in viscosity and performance. Easy to dissolve in water, transparent solution; It is stable in alkaline solutions and easily hydrolyzes when exposed to acid. Precipitation occurs when the pH value is 2-3, and it also reacts with multivalent metal salts to form precipitation.
Main uses
Used as a thickener in the food industry, as a drug carrier in the pharmaceutical industry, as a binder and anti re settling agent in the daily chemical industry, as a sizing agent and protective colloid in the printing and dyeing industry. It can be used as a component of oil production fracturing fluid in petrochemical industry.
Application
The Application of CMC in Food
CMC is not only a good emulsifying stabilizer and thickener in food applications, but also has excellent freezing and melting stability, and can improve the flavor of products and extend storage time. CMC is constantly being developed in the food industry, and research on the application of carboxymethyl cellulose sodium in wine production has also been carried out.
The Application of CMC in Medicine
In the pharmaceutical industry, it can be used as an emulsion stabilizer for injections, an adhesive for tablets, and a film-forming agent. CMC can significantly prolong the retention time of anticancer drugs in tumors, enhance their anti-tumor efficacy, and improve the therapeutic effect in the treatment of liver cancer through arterial infusion of anticancer drugs. CMC also has a wide range of applications in animal medicine. There are reports that infusing 1% CMC solution into the abdominal cavity of ewes has a significant effect on preventing difficult childbirth in livestock and abdominal adhesions after reproductive tract surgery.
CMC in other industrial applications
In detergents, CMC can be used as an anti fouling redeposition agent, especially for hydrophobic synthetic fiber fabrics, with significantly better anti fouling redeposition effect than carboxymethyl fibers.
CMC can be used as a mud stabilizer and water retaining agent to protect oil wells in oil drilling;
In the textile industry, it is used as a sizing agent, thickener for printing and dyeing pulp, and for textile printing and stiff finishing. Used as a sizing agent, it can improve solubility and viscosity, and is easy to desize; Improving the bonding between fibers and ensuring the stability of viscosity ensures the uniformity of sizing, thereby improving the efficiency of weaving. It can also be used as a finishing agent for textiles, especially for permanent anti wrinkle finishing, bringing durability changes to fabrics.
CMC can be used as an anti settling agent, emulsifier, dispersant, leveling agent, and adhesive for coatings. It can evenly distribute the solid content of coatings in solvents, ensuring long-term non layering of coatings. It is also widely used in paints.
CMC is more effective as a flocculant in removing calcium ions than sodium gluconate.
CMC is used as a paper sizing agent in the papermaking industry, which can significantly improve the dry and wet strength, oil resistance, ink absorption, and water resistance of paper.
CMC is used as a water sol in cosmetics and as a thickener in toothpaste, with a dosage of about 5%.
CMC can be used as a flocculant, chelating agent, emulsifier, thickener, water retaining agent, sizing agent, film-forming material, etc. It is also widely used in fields such as electronics, pesticides, leather, plastics, printing, ceramics, toothpaste, daily chemical industry, etc. Due to its excellent performance and wide range of applications, it is constantly exploring new application fields, and the market prospects are extremely broad.
Matters Needing Attention
The compatibility of this product with strong acids, bases, and heavy metal ions (such as aluminum, zinc, mercury, silver, iron, etc.) is prohibited
The allowable intake of this product is 0-25mg/kg.
