Sodium Tripolyphosphate and Polyphosphate as Dispersing Agents for Alumina Suspensions: Rheological Characterization

Table 1

Description of the alumina powder employed.

	Trade name: High Purity Alumina AKP-15 by Sumitomo Chemical Co. Ltd. (Japan)
	Crystal form: 𝛼-Al2O3
	Purity: >99.99%
	Mean particle size: 0.68 𝜇m
	Particle size distribution <1 𝜇m: 83%
	Loose bulk density: 0.9 g/cm^3
	Tapped bulk density: 1.3 g/cm^3
	BET specific surface area: 3.8 m^2/g
	Impurity analysis: Si 22 ppm; Na 5 ppm; Mg 6 ppm; Cu < 1 ppm; Fe 19 ppm