advantages of SPT

The following table presents a comparison of the available heavy liquids.

Our Sodium polytungstate is opposed to two organic heavy liquids.

Have a look for yourself to find out which advantages Sodium polytungstate offers you.

	organic systems		aqueous systems
	halogenated hydrocarbons	LST	Sodium polytungstate
delivery form		liquid	liquid, powder and granulate
recycleable		yes	yes
thermally stability		> 100° C	95° C
toxicity	highly toxic!	non toxic	non toxic
solubility >20° C		excellent	excellent
solubility <15° C		crystallisation	excellent
crystallizing point at density 2,8 g/cm³		16-18° C	< 0° C
density of saturated solution at 25° C		2,95 g/cm³	3,08 g/cm³
viskosity at density 2,4 g/cm³		4 cP	4 cP
viskosity at density 2,8 g/cm³		10 cP	19 cP
in combination with tungsten carbide for preparation of higher densities		unsuitable	excellent