涓枃 | English
Home About Us Products Certificate Feedback Contact Us
  Products Class
Re-dispersible Emulsion Powder
Cellulose Ethers
Cellulose Fiber
Cigarette special adhesive
Ethylene Vinyl Acetate Emulsion
  Contact us
Shaanxi XuTai Technology Co., Ltd. Add: Floor 10,CITIC building,No.89 
Chang' an North Road, Beilin 
District, Xi' an, China
Tel: 86-29-87886039
Fax: 86-29-88668265
Email:sales1@xutai1998.com; 
            sales2@xutai1998.com; 
            sales3@xutai1998.com
Carboxymethyl cellulose (CMC)
1. Product introduction
 
Generic name
Carboxymethyl Cellulose
Abbreviations
CMC
CAS NO.
9004-32-4
Conform to the standards
GB/T 5005-2010
API SPEC 13A-2010
Structure Formula
 














2. 
Technical specifications
 
CAS No.: 9004-32-4
MF: [C6H7O2 (OH) 2CH2COONa] n
Item
INDEX
CMC-LV
CMC-HV
Appearance
white free-flowing or light-yellow   powder
Moisture              %
               鈮10
Purity                %
鈮80.0
鈮85.0
D S                   %
鈮0.80
鈮0.80
pH @
7.0-9.0
6.5-8.0
Viscosity 600r/min
鈮90
         ------------
Filtration  (Saturated saltwater suspension)
鈮10.0
N
N
Viscosity  (cPa.s)
600r/min
Distilled water
----------
鈮30
40g/l salt water
----------
鈮30
Saturated saltwater
----------
鈮30
 
 





 







3. 
Physical and Chemical Properties
 
It鈥檚 ionic cellulose that the appearance is white or slightly yellow flocculent fiber powder or white powder, odorless and tasteless, non-toxic; soluble in cold water or hot water to form a transparent solution that has a certain viscosity; solution is neutralor slightly alkaline, insoluble in an organic solvent such as ethanol, ethyl ether, isopropanol, acetone, but it can be dissolved in 60% ethanol or acetone solution; hygroscopicity, heat and light stability, the viscosity decreases with increasing temperature. The solution is stable range Ph2 to Ph10, below Ph2 a solid precitated, above Ph10 viscosity is reduced.
 
4. Product Application
 
CMC has the following advantages for the oil, gas drilling, digging wells and other product:
 
1).The mud containing CMC enables the borehole wall to form thin firm. The low permeability filter cake, can reduce water loss.
 
2).Added CMC to slurry can rig low initial gel strength, easily emit gases wrapped inside the mud and debris quickly abandoned in the morass.
 
3).Drilling mud and other suspended dispersion, having a certain presence added CMC can make it stable and to extend the lifespan.
 
4).Containing CMC, the mud rarely affected by mildew mold, therefore, not have to maintain a high PH, and also do not have to use preservatives.
 
5).CMC as drilling mud treatment agent flushing fluid, anti-various soluble salts pollution.
 
6).Containing CMC, the mud has a good stability, even though the temperature is above 150鈩 able to reduce water loss.
The high viscosity, high degree of subsitution of CMC suitable the smaller density of the mud, low viscosity, high degree of substitution of CMC suitable for the denser of the mud. The selection of CMC depends on the mud types and regions, well depth and different conditions.
 
闄旾CP澶12008595鍙-1 Copyright © 2021   SHAANXI XUTAI TECHNOLOGY CO.,LTD.. All Rights Reserved. WebDesign:MYKJ