Table 1 Glass composition and initial dissolution rate, r₀, of some common silicate glasses.

	ISG	SON68	Albite glass	Basaltic glass	Obsidian	Roman glass	Soda-lime	Pyrex	Bioglass 45S5	E
Glass composition in mol%
SiO₂	60.1	52.7	75	61.6	83	72.4	72.9	81.0	46.1	57.0
B₂O₃	16.0	14.0						13.0		6.1
Al₂O₃	3.8	3.4	12.5	10.9	8.2	1.1	1.0	2.0		8.8
P₂O₅		0.1							2.6
Fe₂O₃		3.0		5.1	0.6	0.1
Na₂O	12.6	11.4	12.5	3.2	3.9	19.4	12.3	4.0	24.4	0.6
Li₂O		4.6		2.5
K₂O					2.9
CaO	5.7	5.0		14.6	1.0	5.4	7.2		26.9	19.6
MgO					0.3		6.6			6.5
BaO		0.3
SrO		0.2
ZrO₂	1.7	1.5
MoO₃		0.9
TiO₂					0.1					0.4
∑RE₂O₃		0.9
Other		2.0		2.0		1.5	<1			<1
Initial dissolution rate r₀ in g·m⁻²·d⁻¹ in the (T, pH) conditions given in the reference (Ref.)
T (°C), pH	90 9	90 9	90 9	90 8.4	157 7^a	90 9.5	87 9^a	90 7^a	37 7^a	90 9
r₀	8.2	0.3	0.26	0.8	6 × 10⁻³	5.9	7.7	0.5	45	4.6
Ref.	⁶⁰ ²⁵⁶	¹⁶⁶	²⁵⁶	²²²	²⁵⁷	²⁴⁵	²⁵⁷	²⁵⁷	²⁵⁸	np
Initial dissolution rate r₀ in g·m⁻²·d⁻¹ recalculated at 90 °C pH 9 from the measured value
r_0,calc at 90 °C, pH 9	8.2 3.2	0.3	0.26	1.4	2 × 10⁻³	2.5	23	3	>8000	4.6

For the sake of comparison, r₀ has been given at 90 °C pH^90°C 9. For each study (T, pH) conditions of r₀ measurement are given. If they differed from the selected conditions, r₀ was calculated at 90 °C, pH 9 with Eq. (4). If E_a and η were not available, r_0,calc was determined with E_a = 60 kJ·mol⁻¹ and =0.4.
np not published, RE rare earth elements.
^apH given at room temperature. Uncertainty on r₀ is ~50%, except for bioglass and obsidian, for which r_0,calc was estimated from small amounts of data and under temperature and pH conditions far from the reference.

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