Table 2. Compatibility of carboxymethyl cellulose sodium salt (NaCMC) with various precipitants.

Injection properties were optically judged as good (+) or very good (++) depending on the stability and viscosity of the extruded stream (viscous enough to form and maintain a continuous stream not interrupted by droplets or inhomogeneities).

Compound	Type of precipitant	Final tested concentration	Injection
Lithium sulfate	Salt	1.25 M	+
Magnesium sulfate	Salt	1.25 M	+
Ammonium sulfate	Salt	1.8 M	+
Sodium chloride	Salt	2 M	+
Polyethylene glycol 400	Polymer	35% (w/v)	++
Polyethylene glycol 2000	Polymer	30% (w/v)	++
Polyethylene glycol 4000	Polymer	25% (w/v)	++
Polypropylene glycol 400	Polymer	25% (w/v)	++
Ethanol	Volatile organic liquid	35% (v/v)	+
2-Methyl-2,4-pentanediol (MPD)	Non-volatile organic liquid	25% (v/v)	+