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Carboxyl Methyl Cellulose (CMC)

Carboxyl Methyl Cellulose (CMC)

Molecular formula: C6H7O2(OH)2OCH2COONa 

CAS No.: 9004-32-4
H. S. No: 39123100

Apperance: white or yellowish fib 

Package:25kg/paper bag

Description: The Carboxyl Methyl Cellulose (CMC) is a kind of cellulose ether with anion contour’s high molecular structure.
It has no smell,no taste and no toxicity.
The powder can be easily melt in water to being colloidal solution,but it can’t melt in alcohol,ether,acetone and other organic solvent. 

Application classification:CMC is widely used in oil drilling, textiles, food, tobacco, pharmaceutical, paint, welding electrode, battery, ceramics, daily-use chemicals, paper and sodium carboxy nethyl.

Viscosity scope(mpas) 500 min 200-500 400-2000 25-400
1% aqueous solution 2% aqueous solution
Technique Requirements
Viscosity(2% aqueous solution, mpas) 25 min
Degree of Substitute 0.2-1.5
PH &#118alue (10g/l aqueous solution) 6.0-8.5
Loss on Drying (%) 10.0 max
Chloride (cl, %) 1.2 max
Arsenic (As, %) 0.0002 max
Lead (Pb, %) 0.0005 max
Heavy Metal (Pb, %) 0.0015 max
Iron (Fe, %) 0.02 max
Applications: Food grade CMC is widely used in Food Industry as thickener, stabilizer, moisture sustainer and emulsifier to improve taste.

It is used in making yoghurt, beverage, jelly, syrup, cookies, instant noodles and inebriant.
Index Technique Requirements
LZ-01 LZ-01
Physical Form Pure white powder
Viscosity(2%aqueous solution, mpas) 500 min 20 max
D.S 0.25 min 0.6 min
Loss on Drying (% ) 13.0 max 10 max
Purity (%) 85.0 min 80 min
PH &#118alue 7-10 7-10
Applications: CMS used in paper-making and dyeing industry for its property of retaining moisture and fluidizing. CMS colloid is transparent and delicate.
The viscosimeter is low but viscosity is high. It has good fluid, dissolvability, emulsibility, stability and permeability.
It used as drying agent, wet end additive and sizing agent in making paper and combines with PVA to form oil-resistant and water soluble coating.
3.Detergent Grade CMC.
Index Technique Requirement
Moisture(%) 10 10 10 max 10 max
Purity(%) 55 60 75 min 90 min
Degree of Substitute 0.5-0.7 0.60 min 0.50 min 0.60 min
Viscosity(cps) 5-40 10-40 250 min 800 min
1% aqueous solution 1% aqueous solution
PH &#118alue 8-11.5 8-11.5 8-11.5 6.5-8.0
Applications: Detergent grade CMC, when used in liquid, paste detergent, acts as stabilizing agent and thickening agent; when used in detergent powder,
CMC can effectively prevent washes from becoming contaminated after being washed by synthetic detergent.
4. Ceramics, Construction, Paint Grade CMC
Index Technique Requirements
Viscosity(2% aqueous solution,mpas) 1200 min 800-1200 600-800 500 min
Degree of Substitute 0.80 min 0.70 min 0.65 min 0.60 min
Purity(%) 90 min 85 min 80 min 70 min
PH &#118alue 6.0-8.5 6.0-8.5 6.0-8.5 7-9
Loss on Drying (%) 10 max 10 max 10 max 10 max
Applications: In ceramics and constructor industry, CMC acts as thickener. It is a good agent to stabilize, retain moisture.
It is useful to make the material viscoid and less-gelatin.;
5. Textile, Dyeing Grade CMC
Index Technique Requirements
Viscosity(2% aqueous solution, mpas) 800-1200 600-800 300-600 200-500 100-300
Degree of Substitute 0.80 min 0.80 min 0.70 min 0.65 min 0.55 min
Purity (%) 90 min 90 min 85 min 60 min 60 min
PH &#118alue 6.0-8.5 6.0-8.5 6.0-8.5 8-10 8-10
Loss on Drying(%) 10 max 10 max 10 max 25 max 10 max
Applications: CMC used in textile and dyeing industry as sizing agent and dying adjuvant to make stock limpidity and transparence.
It is easy a good stabilizer of the stock and helps to form film. It is easy to desizing.
6. Paper Grade CMC
Index Technique Requirements
Viscosity(mpas) 20 max (2% aqueous solution) 50 max (4% aqueous solution)
Degree of Substitute 0.85 min 0.90 min
Purity (%) 65 min 90 min
PH &#118alue 6.5-8.5 6.5-8.5
Loss on Drying (%) 10 max 10 max
Applications: In paper industry, CMC is used for paper coating.
It is useful for the dispersing and flowing of the pigments, enhancing the finish and smoothness of the printing quality.
It is used for surface sizing to strengthen the paper and reduce the printing dusts. It can increase moisture and improve retention rate in pulping.
7. Tobbaco Grade CMC
Index Technique Requirements
JY-1 JY-2 JY-3
Moisture(%) 10 max 10 max 10 max
Purity(%) 95 min 90 min 0.70 min
Degree of Substitute 0.80 min 0.80 min 0.70
Viscosity(2% aqueous solution, cps) 1200 min 800-1200 500-800
PH &#118alue 6.5-8.0 6.5-8.5 7.0-9.0
8. Oil-drilling Grade CMC
Index Technique Requirements
Physical Form White or yellowish free flowing powder
Moisture(%) 10 10 10
Purity(%) 80 85 95
Degree of Substitute 0.80 0.65 0.80
PH &#118alue 7.0-9.0 7.0-9.0 6.5-8.0
Applications: Oil drilling grade CMC used in fracturing fluid, drilling fluid and well cementing fluid as fluid loss controller and tackifier. It can protect the shaft wall and prevent mud loss thus enhance recovery efficiency.
9. Welding, Battery Grade CMC
Index Technique Requirements
DH-1 DH-2 DH-3 DC
Viscosity(2% aqueous solution,mpas) 1200-1500 800-1200 600-800 1200 max
Degree of Substitute 0.85max 0.85 max 0.80 max 0.85 max
Purity(%) 95 max 90 max 85 max 90 max
PH &#118alue 6.0-8.5
Loss on Drying (%) 10 max
Applications: CMC used in welding industry to improve the appearance, quality, and eccentricity of the welding rod.
It used to reduce the broken rate of the welding rod. In the battery industry CMC is well in acid-resistance, salt-resistance.
The colloid is very stable and it is suitable to make Alkaline batteries and Zo/Mn battery.
10. Toothpaste Grade CMC
Type Technique Requirements
D.S Viscosity(2% aqueous solution,mpas) PH &#118alue Moisture(%,max) NaCI Heavy Metal(%,pb) Arsenic(%) Iron(%)
IH10 1.00
900-1200 6.5-8.0 8.0 3.0max 0.002max 0.0005max 0.03max
IH9 0.90
900-1200 6.5-8.0 8.0 3.0max 0.002max 0.0005max 0.03max
Applications: There are many kinds of thickener for toothpaste use in chemical industry, but the application of CMC is most extensive.
CMC acts as colloid that helps to shape and conglutinate the dense-degree suit and can keep the stable cream body appearance.
After CMC fuse deeply the light rate is high, 'have better flow to change the function and touch to change the function.
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