Natural cellulose is the most widely distributed and abundant polysaccharide in nature, and its sources are very abundant. The current cellulose modification technology 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, bonding, moisture retention, colloid protection, emulsification and suspension. It is widely used in petroleum, food, medicine, textile and papermaking industries, and is one of the most important cellulose ethers.
Application Fields
Carboxymethyl cellulose (CMC) is the product with the largest output, the widest application and the most convenient use among cellulose ethers, commonly known as "industrial MSG".
1. Used in oil and natural gas drilling, well digging and other projects
① Mud containing CMC can form a thin and strong filter cake with low permeability on the well wall, reducing water loss.
② After adding CMC to the mud, the drilling rig can obtain a low initial cutting force, making it easy for the mud to release the gas wrapped in it, and at the same time quickly abandon the debris in the mud pit.
③ Drilling mud, like other suspended dispersions, has a certain existence period. After adding CMC, it can stabilize and prolong the existence period.
④ Mud containing CMC is rarely affected by mold, so it is not necessary to maintain a high pH value or use preservatives.
⑤ CMC is used as a drilling mud washing fluid treatment agent to resist pollution from various soluble salts.
⑥ Mud containing CMC has good stability and can reduce water loss even at temperatures above 150°C.
CMC with high viscosity and high substitution degree is suitable for mud with low density, while CMC with low viscosity and high substitution degree is suitable for mud with high density. The selection of CMC should be determined according to different conditions such as mud type, region, and well depth.
2. Used in textile and printing and dyeing industries The textile industry uses CMC as a sizing agent for sizing light yarns of cotton, silk, wool, chemical fiber, and blended fabrics;
3. Used in papermaking industry CMC can be used as a paper surface smoothing agent and sizing agent in the papermaking industry. Adding 0.1% to 0.3% CMC to pulp can increase the tension resistance of paper by 40% to 50%, increase the compressive bursting resistance by 50%, and increase the kneading property by 4 to 5 times.
4. CMC can be added to synthetic detergents as a dirt adsorbent; daily chemicals such as toothpaste industry CMC glycerol aqueous solution is used as the gum base of toothpaste; pharmaceutical industry is used as a thickener and emulsifier; CMC aqueous solution is used for flotation after viscosity increase.
5. It can be used in the ceramic industry as an adhesive, plasticizer, glaze suspension, color fixative, etc. for blanks.
6. Used in construction to improve water retention and strength
7. Used in the food industry. The food industry uses high-replacement CMC as a thickener for ice cream, canned food, instant noodles, and a foam stabilizer for beer. It is used as a thickener, binder or shape agent in the processing of jams, syrups, fruit dew, snacks, ice cream drinks, etc.
8. The pharmaceutical industry selects CMC with appropriate viscosity as a tablet binder, disintegrant, and suspending agent for suspensions.
| CAS号 | 9000-11-7 | |
| Common Name | Cellulose CM | |
| Density | 1.450 g/cm3 | |
| Molecular Formula | C8H16O8 | |
| Boiling Point | 527.1ºC at 760 mmHg |
Packaging and Storage
High-end cigarettes: Used for manufacturing low-tar
Packaging:
20kg per bag (inner lining with PE film, outer layer with kraft paper bag).
25kg per bag or ton bag packaging is also available.
Storage
Store in a cool and dry place, avoiding moisture absorption (humidity ≤60%). Shelf life: 12 months.
FAQ
Q1: Can I get samples?
A: Yes, we can supply free sample, you pay for the freight charge only.
Q2: How to pay?
A: PI will be sent firstly after our aligned products specification. Payment by T/T, LC.
Q3: How is your MOQ?
A: Normally speaking, our MOQ is 1kg. But we can also accept less quantity such as 100g on the condition that sample charge is100% paid.
Q4: How can you guarantee the quality of your products?
1. Our staff are all experienced in chemical products or related major background, they are well trained before quotation.
2. Free sample or pre-shipment sample are available for our new cooperation before you place commercial order. We are sure the same specification commercial products as sample to customers
3. Third Party Inspection like SGS can be arranged according to your requirement before shipping.
4. On-Spot QC in our APPROVED associated production bases with necessary certification like GMP, ISO etc.