Carboxymethyl Cellulose (CMC) Powder

Property:

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 properties of thickening, adhering, emulsifying, and stabilizing. 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:

carboxymethyl cellulose structure formula

Specifications:

Physical specification of CMC for Oil drilling liquids & Oil drilling liquids properties (According to SY5093-92).

ItemLV-CMCMV-CMCHV-CMC
AppearanceWhite 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 Value7.0-9.07.0-9.06.5-8.0
TypeItemTypical measured values
Distilled waterBrineSaturated brine
Base mudFiltration loss, ml60±1090±10100±10
Apparent viscosity, mPa·s6 Max.6 Max.10 Max.
pH8.0±1.08.0±1.07.5±1.0
HV-CMCMud generating capacity, m3/t200 Min.150 Min.160 Min.
LV-CMCFiltration loss = 10mlAddition rate, g/l7.0 Max.10.0 Max.
Apparent viscosity, mPa·s4.0 Max.6.0 Max.
MV-CMCAddition rate, g/l6.014.03.5
Apparent viscosity,mPa·s15 Min.15 Min.15 Min.
Filtration loss, ml9 Max.9 Max.9 Max.

Technical specification of CMC for oil drilling liquids (According to GB/T5005-2001 or API).

TypeSpecification
CMC-HVTViscometer, 600r/minDistilled water30.0 Min.
40g/dm3 brine30.0 Min.
Saturated brine30.0 Min.
Filtration Loss, ml10.0 Max.
CMC-LVTViscometer, 600r/min90.0 Max.
Filtration Loss, ml10.0 Max.
Note: We could arrange product according to customer’s specification

Uses:

CMC oil drilling grade used in fracturing fluid, drilling fluid, and well-cementing fluid as fluid loss controller and tackifier. Carboxymethyl cellulose can protect the shaft wall and prevent mud loss thus enhance recovery efficiency. CMC has the following characteristics:

  • Excellent water retention even at low concentration.
  • Excellent thickening effect.
  • Good resistance to salt and temperature change.
  • Imparts excellent rheological property.

Packing:

Packed in multiply 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.