Description
Carboxymethyl Cellulose Sodium (CMC-Na) is a cellulose derivative obtained by chemically modifying natural cellulose. It is one of the most important water soluble polymers with many advantages that other synthetic glues do not have. CMC is white and flowing fine powder. It is tasteless, odourless, mould-proof, non-toxic, non-flammable and easily dissolved in water to become transparent viscose solution. CMC solution has good properties of thickening, adhering, emulsifying, and stabilizing. Membrane forming, moisture-holding, shape-holding, dispersing and anti-enzyme. The solution of CMC can be mixed with dissolvable animal glues, glycerine, sorbitol, Arabic gum, pectin, xanthic gum and dissolvable starch.

    Characteristics

Parameter	LV-CMC	MV-CMC	HV-CMC
Appearance	White or light yellow powder, freely flowable.
Water,%	10 max
CMC,%	80.0 min	85.0 min	95.0 min
Substitution degree,%	0.80 min	0.65 min	0.8 min
pH	7.0-9.0	7.0-9.0	6.5-8.0

			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	Addition rate, g/l		7.0 max	10.0 max
	loss = 10ml	Apparent viscositymPa's		4.0 max	6.0 max
MV-CMC	Addition rate,g/l		6	14	3.5
	Apparent viscosity,mPa's		15 min	15 min	15 min
	Filtration loss,ml		9 max	9 max	8 max

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

    Packaging and Storage
Packed in multiply paper bags or fibre drums (25KG), or as per customer requirement; keep dry