| Customization: | Available |
|---|---|
| CAS No.: | 9000-11-7 |
| Formula: | C8h15nao8 |
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Natural cellulose is the most widely distributed and most abundant polysaccharide in nature, and its sources are very rich. The current modification technology of cellulose mainly focuses on etherification and esterification. Carboxymethylation reaction is a kind of etherification technology. Carboxymethyl cellulose (CMC) is obtained after carboxymethylation of cellulose. Its aqueous solution has the functions of thickening, film formation, adhesion, water retention, colloid protection, emulsification and suspension, etc. It is widely used in petroleum, food, medicine , textile and paper industries, is one of the most important cellulose ethers.
Carboxymethylcellulose (CMC) is a non-toxic, odorless white flocculent powder with stable performance and is easily soluble in water. Its aqueous solution is a neutral or alkaline transparent viscous liquid, soluble in other water-soluble glues and resins, and insoluble in organic solvents such as ethanol. CMC can be used as a binder, thickener, suspending agent, emulsifier, dispersant, stabilizer, sizing agent, etc.
Carboxymethyl cellulose (CMC) is the product with the largest output, the widest range of uses, and the most convenient use among cellulose ethers, commonly known as "industrial monosodium glutamate".
1. Used in oil and natural gas drilling, well digging and other projects
2. Used in textile, printing and dyeing industries. In the textile industry, CMC is used as a sizing agent for light yarn sizing of cotton, silk wool, chemical fiber, blended and other fabrics;
3. Used in paper industry CMC can be used as paper smoothing agent and sizing agent in paper industry. Adding 0.1% to 0.3% of CMC in the pulp can increase the tensile strength of the paper by 40% to 50%, increase the crack resistance by 50%, and increase the kneading property by 4 to 5 times.
4. CMC can be used as a dirt adsorbent when added to synthetic detergents; daily chemicals such as toothpaste industry CMC glycerol aqueous solution is used as toothpaste gum base; pharmaceutical industry is used as a thickener and emulsifier; CMC aqueous solution is used as a float after thickening Mining and so on.
5. It can be used as adhesive, plasticizer, suspending agent of glaze, color fixing agent, etc. in the ceramic industry.
6. Used in construction to improve water retention and strength
7. Used in the food industry. The food industry uses CMC with a high degree of replacement as a thickener for ice cream, canned food, instant noodles, and a foam stabilizer for beer. For thickeners, binders or conformal agents.
8. The pharmaceutical industry chooses CMC with appropriate viscosity as the binder, disintegrating agent of tablets, and suspending agent of suspensions, etc.
| Item | Limit |
| Color | White or light yellow |
| Form | Powder or granule |
| Sodium Carboxy Methyl Cellulose content, w/% | ≥ 99.5 |
| 1% solution viscosity Brookfield 25ºC, mPa.s |
≥ 5.0 |
| Degree of substitution | 0.20-1.50 |
| PH (10g/L water solution) | 6.0-8.5 |
| Dry weight loss, w/% | ≤ 8.0 |
| Sodium glycollate | ≤ 0.4 |
| Pb, Mg/kg | ≤ 2.0 |
| As, Mg/kg | ≤ 2.0 |
| Chloride (as NaCl), w/% | ≤ 0.5 |
| Na, w/% | ≤ 12.4 |
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