Carboxymethyl Cellulose (CMC) Powder
Properties:
Carboxymethyl cellulose (CMC) is a white and flowing fine powder. It is a cellulose derivative obtained by chemical modification the natural cellulose. Carboxymethyl cellulose is one of the most important water-soluble polymers with many advantages that other natural or synthetic glues do not have.
Carboxymethyl cellulose powder is tasteless, smells mold-proof, non-toxic, non-flammable, and easily dissolved in water.
Carboxymethyl cellulose solution is a transparent viscose solution. This solution has good thickening, adhering, emulsifying, and stabilizing properties. Membrane forming, moisture-holding, shape-holding, dispersing, and anti-enzyme.
Carboxymethyl cellulose solution can be mixed with dissolvable animal glues, glycerin, sorbitol, Arabic gum, pectin, xanthic gum, and dissolvable starch.
CAS No.:
9000-11-7
Molecular Formula:
[C6H7O2(OH)2CH2COONa]n
Structure Formula:
Specifications:
Physical specification of CMC for Oil drilling liquids & Oil drilling liquids properties (According to SY5093-92).
| Item | LV-CMC | MV-CMC | HV-CMC |
|---|---|---|---|
| Appearance | White or light yellow powder, freely flowable | ||
| Water, % | 10 Max. | 10 Max. | 10 Max. |
| CMC, % | 80.0 Min. | 85.0 Min. | 95.0 Min. |
| Substitution degree, % | 0.80 Min. | 0.65 Min. | 0.8 Min. |
| pH Value | 7.0-9.0 | 7.0-9.0 | 6.5-8.0 |
| Type | Item | Typical measured values | |||
|---|---|---|---|---|---|
| Distilled water | Brine | Saturated brine | |||
| Base mud | Filtration loss, ml | 60±10 | 90±10 | 100±10 | |
| Apparent viscosity, mPa·s | 6 Max. | 6 Max. | 10 Max. | ||
| pH | 8.0±1.0 | 8.0±1.0 | 7.5±1.0 | ||
| HV-CMC | Mud generating capacity, m3/t | 200 Min. | 150 Min. | 160 Min. | |
| LV-CMC | Filtration loss = 10ml | Addition rate, g/l | — | 7.0 Max. | 10.0 Max. |
| Apparent viscosity, mPa·s | — | 4.0 Max. | 6.0 Max. | ||
| MV-CMC | Addition rate, g/l | 6.0 | 14.0 | 3.5 | |
| Apparent viscosity,mPa·s | 15 Min. | 15 Min. | 15 Min. | ||
| Filtration loss, ml | 9 Max. | 9 Max. | 9 Max. | ||
Technical specification of CMC for oil drilling liquids (According to GB/T5005-2001 or API).
| Type | Specification | ||
|---|---|---|---|
| CMC-HVT | Viscometer, 600r/min | Distilled water | 30.0 Min. |
| 40g/dm3 brine | 30.0 Min. | ||
| Saturated brine | 30.0 Min. | ||
| Filtration Loss, ml | 10.0 Max. | ||
| CMC-LVT | Viscometer, 600r/min | 90.0 Max. | |
| Filtration Loss, ml | 10.0 Max. | ||
Uses:
CMC oil drilling grade is used in fracturing, drilling, and well-cementing fluid as a fluid loss controller and tackifier. Carboxymethyl cellulose can protect the shaft wall and prevent mud loss, thus enhancing recovery efficiency. CMC has the following characteristics.
- Excellent water retention even at low concentrations.
- Excellent thickening effect.
- Good resistance to salt and temperature change.
- It Imparts excellent rheological properties.
Packing:
Packed in multiple paper bags or fiber drums (25KG), or as per customer requirement, keep dry.
Synonyms:
CMC chemical, CM cellulose, CMC polymer, carboxy methylated cellulose.
Note:
If you want to get the latest CMC price and CMC DBNPA SDS/MSDS, contact us.