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CMC,PAC-Sodium carboxymethyl cellulose
Published:2010-6-23 15:36:54     Hits: ( 5578 )

Sodium carboxymethyl cellulose
Code name :CMC((Sodium carboxymethyl cellulose; Carboxy methylcellulose sodium;Sodium cellulose glycolate;Carmethose;Cellulose, carboxymethyl ether, sodium salt;Cellulose gum)
  Molecular formula :[C6H7O2(OH)2OCH2COONa]
  CAS# :  9004-32-4
 Main Physical & chemical Features
  Sodium carboxymethyl celluose(CMC-Na)is a anion type linear macromole substances . Features of pure substance: white or ivory, insipidity ,innocuity, fluidity, fibrous powder, freely soluble in cold or hot water to form transparent sticky solution, unique function.
Products
Function and Application
CMC Food Grade
CMC is widely used in food industry, it play the roles of taste improvement, thickening and stabilization when used in various kinds of dairy drinks and seasonings. As an additive of molding, taste improvement, anti-fragmentation, water retaining and tenacity strengthening, CMC is also used in ice cream, bread, cake, biscuit, instant noodle and fast paste foods.
The recommended addition is 0.3-1.0%.
CMC Toothpaste Grade
CMC has an efficiency of adhesion and molding when used in toothpaste, and stabilizes the quality of toothpaste owing to good compatibleness.
The recommended addition is 0.5-1.5%.
CMC and PAC for oil drilling
CMC and PAC can reduce water loss, and increase viscosity in drilling fluid, cementing fluid and fracturing fluid. They play the roles of protecting the wall of well, taking drilling trifles, protecting drilling bit, preventing mud loss and increasing drilling rate.
Usage: add to mud directly or glue solution preparation.
Addition: 0.1-0.3% in fresh water mud;
          0.5-0.8% in salt water mud.
CMC Ceramic Grade
CMC is used for ceramic embryo, glazing pulp and colored glaze in ceramic industry.
Addition: 0.03%-0.2% used in ceramic embryo.
          0.05-0.2% used in glazing pulp.
          1.4-4.0% used in colored glaze.
CMC Paper Grade
In making paper, CMC is used in making pulp so as to improve the retention rate and increase humidity and strength; when used in surface sizing, CMC can improve internal adhesion, decrease printing dust and enhance printing quality as molding reagent. In paper coating, CMC also helps the dispersion and fluidity of paint, improves appearance of paper and smoothness, upgrades optical performance and printing adaptability.
Addition: 0.3-1.5%.
CMC for other industries
As coagulant, water retaining, thickener and binder, CMC is also used in paint, carpet gum, mosquito coil incense, tobacco, electric welding, textile, battery, printing and others.


Packing, identification , transport and storage of CMC.
  ■  Packing
  Two layers package, inner layer adopted polyethylene bag, outer layer adopted composite paper bag with inner lining knitting bag or outer knitting bag. Net weight:25kg , or we can pack as per  customers’ demand .
  ■  Identification
  Marked on packing: producer, article, brand, design code, spec., B.N., date of production, net weight and other necessary identification. " CMC for toothpaste especially", " addition agent for food".
  ■  Transportation , Storage
  In storage and transportation, the product may be placed in clean, dried and ventilated warehouse, don't mix with toxical, peculiar smell substances, take care of waterproof package. Complied with the standard, transportation and storage, the expiry date is two years from manufacturing date.
 
PAC&CMC for Oil Drilling
 The Specifications Sheet for PAC and CMC Oil Drilling Grade
 1: Polyanionic Cellulose (PAC)
   
                                          Type
 Specifications                          
PAC-LVT1
PAC-LVT2
PAC-LV1
PAC-LV2
PAC-HVT
PAC-HV1
PAC-HV2
Degree of Substitution (D.S)
≥0.90
pH Value
6.5-9.0
Purity (%)
≥65.0
≥75.0
≥95.0
≥98.0
≥75.0
≥95.0
≥98.0
Loss on Drying (%)
≤10.0
Performance Specifications
 
Apparent Viscosity (cps)
≤20
≤20
≤40
≤30
≥35
≥50
≥60
Fluid Loss
(ml)
≤16
≤13
≤12
≤11
 
≤23
≤18
Remarks
The performance testing as per API 13I
 
  
2、HV-CMC&LV-CMC   
Specifications
Performance Specifications
Physical and Chemical specifications
Items
Technical Data
D.S
PH
Purity (%)
Loss on Drying(%)
In distilled water
In salt water
In saturated Salt water
Base Mud
Fluid Loss (ml)
60±10
90±10
100±10
--
--
--
--
Apparent Viscosity (cps)
≤6
≤6
≤10
PH
8.0±1.0
8.0±1.0
7.5±1.0
HV-CMC
Yield(m3/t)
≥200
≥150
≥160
≥0.80
6.5-8.0
≥95.0
≤10
LV-CMC
Fluid Loss: 10ml
Addition (g/l)
--
≤7.0
≤10.0
7.0-9.0
≥80.0
Apparent Viscosity (cps)
--
≤4.0
≤6.0
Remarks
The performance test for HV-CMC as per OCMA Spec.DFCP-7, and LV-CMC as per OCMA Spec.DFCP-2
 
3、CMC-HVT & CMC-LVT                

                       Type
 Specifications                          
                CMC-HVT
       CMC-LVT
Solution viscosity
Fann  600 rpm
In distilled water 
        ≥30
         ≤90
In salt water 
        ≥30
In saturated Salt water 
        ≥30
Fluid Loss (ml)
≤10.0
Remarks
The performance testing as per API 13 A

 
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