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.
CMC
|
Type
|
FVHX
|
FHX
|
FMX
|
FLX
|
|
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.
|
2.CMS
|
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
|
|
|
XYF-1
|
XYF-2
|
XYG-1
|
XYG-2
|
|
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
|
|
|
IH8
|
IH7
|
IH6
|
IM6
|
|
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
|
|
IH7
|
IM7
|
IM6
|
IM5
|
IM4
|
|
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
|
|
ZZH-1
|
ZZH-2
|
|
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
|
|
LV-CMC
|
MV-CMC
|
HV-CMC
|
|
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
min
|
900-1200
|
6.5-8.0
|
8.0
|
3.0max
|
0.002max
|
0.0005max
|
0.03max
|
|
IH9
|
0.90
min
|
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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