Yantai Junbang: carboxymethyl cellulose manufacturer with sufficient supply

Natural cellulose is the most widely distributed and abundant polysaccharide in nature, and its sources are very rich. Current cellulose modification technology mainly focuses on etherification and esterification. Carboxymethylation reaction is a type of etherification technology. Carboxymethyl cellulose (CMC) is obtained after carboxymethylation of cellulose. Its aqueous solution has the functions of thickening, film-forming, adhesion, moisture retention, colloid protection, emulsification and suspension, etc., and is widely used in petroleum, food, medicine , textile and paper making industries, it is one of the most important cellulose ethers.

Sodium carboxymethylcellulose (CMC) is an anionic cellulose ether, appearing as white or slightly yellow flocculent fiber powder or white powder, odorless, tasteless, and non-toxic; easily soluble in cold or hot water, forming A transparent solution with a certain viscosity. The solution is neutral or slightly alkaline, insoluble in ethanol, ether, isopropyl alcohol, acetone and other organic solvents, but soluble in 60% water-containing ethanol or acetone solution. It is hygroscopic, stable to light and heat, and the viscosity decreases as the temperature increases. The solution is stable at a pH value of 2 to 10. If the pH value is lower than 2, solids will precipitate. If the pH value is higher than 10, the viscosity will decrease. The discoloration temperature is 227°C, the carbonization temperature is 252°C, and the surface tension of 2% aqueous solution is 71mn/n.

Productparameters:

PackagingBottledOriginYantaiQuantitativeCanbecustomizedPlaceofsupplyYantaiAppearanceColorlessandtransparentImplementqualitystandardsNationalstandardsMinimumorderquantity1Referenceprice￥200

Cellulosederivativeswithcarboxymethylsubstituentsaretreatedwithsodiumhydroxidetoformalkalicellulose,whichisthencombinedwithPreparedfromthereactionofmonochloroaceticacid.Theglucoseunitsthatmakeupcellulosehavethreehydroxylgroupsthatcanbereplaced,soproductswithdifferentdegreesofsubstitutioncanbeobtained.Onaverage,1mmolofcarboxymethylgroupisintroducedper1gofdryweight.Itisinsolubleinwateranddiluteacid,butcanswellandcanbeusedforionexchangechromatography.ThepKaofcarboxymethylisabout4inpurewaterandabout3.5in0.5mol/LNaCl.ItisaweaklyacidiccationexchangerandisusuallyusedfortheseparationofneutralandalkalineproteinsabovepH4.Thosewithmorethan40%ofthehydroxylgroupsreplacedbycarboxymethylgroupscanbedissolvedinwatertoformstablehigh-viscositycolloidalsolutions.

Yantai Junbang: Carboxymethylcellulose manufacturers have sufficient supply

What are the uses of carboxymethylcellulose? ?

Carboxymethyl cellulose (CMC) is a non-toxic and odorless white flocculent powder with stable performance and easy to dissolve in water. Its aqueous solution is a neutral or alkaline transparent viscous liquid, soluble in other Water-soluble glue and resin, insoluble in organic solvents such as ethanol. CMC can be used as a binder, thickener, suspending agent, emulsifier, dispersant, stabilizer, sizing agent, etc.

Sodium carboxymethylcellulose (CMC) is the product with the largest output, the most wide range of uses, and the most convenient use among cellulose ethers. It is commonly known as “industrial MSG”.

1. Used in oil and 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 shear force, making it easy for the mud to release the gas trapped in it, and at the same time, the debris will be quickly discarded in the mud pit.

③Drilling mud, like other suspended dispersions, has a certain existence period. Adding CMC can stabilize it and extend its existence period.

④ Mud containing CMC is rarely affected by mold. Therefore, there is no need to maintain a high pH value or use preservatives.

⑤Contains CMC as a drilling mud cleaning fluid treatment agent, which can resist the pollution of various soluble salts.

⑥CMC-containing mud has good stability and can reduce water loss even if the temperature is above 150°C.

CMC with high viscosity and high degree of substitution is suitable for mud with low density, while CMC with low viscosity and high degree of substitution is suitable for mud with high density. The selection of CMC should be determined based on different conditions such as mud type, region, and well depth.

2. Used in the textile, printing and dyeing industrial textile industry. CMC is used as a sizing agent for light yarn sizing of cotton, silk wool, chemical fiber, blended and other strong materials;

Yantai Junbang: Carboxymethylcellulose manufacturers have sufficient supply

3. Used in the papermaking industry CMC can be used as a smoothing agent and sizing agent in the papermaking industry . Adding 0.1% to 0.3% CMC to paper pulp can increase the paper’s tensile strength by 40% to 50%, increase its compressive strength by 50%, and increase its kneadability by 4 to 5 times.

4. CMC can be used as a dirt adsorbent when added to synthetic detergents; in daily chemicals such as toothpaste industry, CMC’s glycerin aqueous solution is used as the gum base of toothpaste; in the pharmaceutical industry, it is used as a thickener and emulsifier; after the CMC aqueous solution is thickened, Used for flotation mineral processing, etc.

5. Used in the ceramic industry as an adhesive, plasticizer, glaze suspending agent, and color-fixing agent for blanks.

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 substitution as a thickener for ice cream, cans, instant noodles, and a foam stabilizer for beer, etc. , used as a thickening agent, binder or shaping agent in the processing of jam, sugar juice, sherbet, snacks, ice cream drinks, etc.

8. The pharmaceutical industry uses CMC of appropriate viscosity as a binder, disintegrant for tablets, and suspending agent for suspensions.

What precautions should be taken during transportation?

When storing this product, attention should be paid to moisture, fire, and high temperature protection, and it is required to be stored in a ventilated and dry place.

Protect from rain during transportation, and iron hooks are strictly prohibited for loading and unloading. After long-term storage and stacking pressure, this product may agglomerate when unpacking, which will cause inconvenience but will not affect the quality.

This product is strictly prohibited from contact with water during storage, otherwise it will gel or partially dissolve and become unusable.

Editor in charge: Li Zhuang