Product

CMC

Product Name :cm cellulose
CAS No:9000-11-7
Molecular formula :[C₆H₇O₂(OH)₂CH₂COONa]_n
Molecular structure:
1 Physical Specification of CMC for Oil drilling liquids & Oil drilling liquids properties

	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 loss = 10ml	Addition rate, g/l		7.0 max	10.0 max
LV-CMC	Filtration loss = 10ml	Apparent viscositymPa·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	8 max

2 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	Viscometer600r/min		90.0 max
	Filtration Loss (ml)		10.0 max

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