Equilibrium constants for complexation of Ti(iv) (log β_n) by hydrogen sulfate and sulfate at 25 °C. Two constants are available for Szilágyi et al.³⁷ depending on the nature of the added salt: (a) Na₂SO₄ (b) (NH₄)SO₄ (reproduced with permission from Elsevier from Pichavant et al.²¹). ND = not determined in the original papers.

		Nabivanets38	Babko39	Baillon40	Szilágyi37
SO42−	log β1SO4	2.4	2.23	0.53	0.85 (a)	0.99 (b)
	log β2SO4	3.6	4.12	1.08	0.68 (a)	0.97 (b)
	log β3SO4	ND	4.25	ND	ND	ND
HSO4−	log β1HSO4	2.15	ND	0.04	ND	ND
	log β2HSO4	ND	ND	−0.04	ND	ND