Sodium Carboxymethyl Cellulose (CMC) Supplier and Manufacturer

CMC

Description

Sodium carboxymethyl  cellulose,  fluid‐loss  reducing  additive  supplied  in  three  grades:  low  viscosityhigh  viscosity,  and  extra high  viscosity. It  can  be  used  in  freshwater  and  seawater  mud     systems.    Characteristic and property

 

Physical  appearance........................................White to off white  powder
Specific  gravity................................................1.59  (Density  may  vary  based  on  grade  and  purity)
Solubility  in  water............................................Soluble
pH...................................................................7–10
Temperature  stability........................................Stable  to  250°F  (120°C)  in  field  use 
Applications


Sodium carboxymethyl cellulose is used as a fluid loss reducing additive in freshwater and seawater muds. It is less effective in brines and saltwater and is not generally recommended to be used if the salinity exceeds 50,000 ppm. Sodium carboxymethyl cellulose is used in high viscosity, high solids or heavily weighted fluids and produces only slight increases in viscosity. Sodium carboxymethyl cellulose are used in low viscosity or low solids fluids and increase viscosity in addition to controlling fluid loss.  

 

Recommended  Treatments:  

1. In  freshwater:   0.5  to  1.5  lb/bbl  (1.4  to  4.3  kg/m3)  
2. In  seawater:   2.0  to  3.0  lb/bbl  (5.7  to  8.6  kg/m3)  
3. Add  slowly  through  a  mixing  hopper  at  a  rate  of  10  to  20  min/sack     Advantagess


dely  available  and  an  economic  source  of  polymer  fluid loss  control  
Concentrated  chemical,  very  effective  at  small  treatment  levels   
Can  be  used  in  most  water‐base  drilling  fluids  

 

Limitations


Subject  to  bacterial  degradation,  a  biocide  should  be  used  to  prevent  fermentation  
Not  utilized  in  high salinity  fluids  that  exceed  50,000  ppm  
Not  tolerant  of  high pH  and  high calcium ion  conditions  in  combination  
Sodium   carboxymethyl  cellulose  should  be  pretreated  with  either  sodium bicarbonate  or  possibly  citric  acid  prior  to  drilling  cement  


Toxicity and Handling

Bioassay  information  is  available  upon  request.   
Handle  as  an  industrial  chemical,  wearing  protective  equipment  and  observing  the  precautions  described  in  the  Material  Safety  Data  Sheet  (MSDS).  

 

Packaging and Storage

Sodium carboxymethyl  cellulose  is  packaged  in  25 kg  (55 lb),  heavy duty,  multi wall,  water proof   sacks. Store  in  a  dry  location  away  from  sources  of  heat  or  ignition,  and  minimize  dust.  


This material is supplied solely for informational purposes and UNIVERSAL makes no guarantees or warranties, either expressed or implied, with respect to the accuracy or use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale.
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