SO₂

Sulphur dioxide
Flags: Detected, RATE12
Empirical: O₂S
Mass: 64 amu
Dipole moment: 1.630 D
Heat of formation: -294.3 kJ mol^-1
Added to system: 2003-04-28 18:00:49

Reactions: Formation | Destruction

9 SO₂ formation reactions

	Reaction	α	β	γ	T_l - T_u (K)
1	O₂ + S^- → SO₂ + e^-	3.00e-11	0.00	0.00	10 - 41000
2	O₂ + SO₂⁺ → SO₂ + O₂⁺	2.50e-10	0.00	0.00	10 - 41000
3	HSO₂⁺ + e^- → SO₂ + H	2.00e-7	-0.50	0.00	10 - 300
4	H₂O + HSO₂⁺ → SO₂ + H₃O⁺	2.13e-9	-0.50	0.00	10 - 41000
5	NH₃ + HSO₂⁺ → SO₂ + NH₄⁺	2.00e-9	-0.50	0.00	10 - 41000
6	SO⁺ + CH₃COCH₃ → C₃H₆⁺ + SO₂	5.60e-11	0.00	0.00	10 - 41000
7	O₂ + SO → SO₂ + O	1.10e-14	1.89	1538.00	200 - 2980
8	OH + SO → SO₂ + H	8.60e-11	0.00	0.00	298 - 298
9	O + SO → SO₂ + PHOTON	3.20e-16	-1.50	0.00	10 - 300

	Reaction	α	β	γ	T_l - T_u (K)
1	CO₂⁺ + SO₂ → SO₂⁺ + CO₂	1.50e-9	-0.50	0.00	10 - 41000
2	H⁺ + SO₂ → SO₂⁺ + H	5.78e-9	-0.50	0.00	10 - 300
3	He⁺ + SO₂ → SO₂⁺ + He	4.30e-10	-0.50	0.00	10 - 41000
4	O⁺ + SO₂ → SO₂⁺ + O	2.04e-9	-0.50	0.00	10 - 41000
5	SO₂ + CRPHOT → SO + O	1.30e-17	0.00	922.00	10 - 41000
6	C⁺ + SO₂ → SO⁺ + CO	2.30e-9	-0.50	0.00	10 - 41000
7	CO⁺ + SO₂ → SO⁺ + CO₂	1.70e-9	-0.50	0.00	10 - 41000
8	H₂O⁺ + SO₂ → HSO₂⁺ + OH	2.60e-9	-0.50	0.00	10 - 41000
9	H₃⁺ + SO₂ → HSO₂⁺ + H₂	1.30e-9	-0.50	0.00	10 - 41000
10	He⁺ + SO₂ → S⁺ + O₂ + He	9.00e-10	-0.50	0.00	10 - 41000
11	He⁺ + SO₂ → SO⁺ + O + He	2.97e-9	-0.50	0.00	10 - 41000
12	O⁺ + SO₂ → SO⁺ + O₂	3.60e-10	-0.50	0.00	10 - 41000
13	C + SO₂ → CO + SO	7.00e-11	0.00	0.00	10 - 300
14	O + SO₂ → SO + O₂	9.01e-12	0.00	9837.00	440 - 3760
15	S + SO₂ → SO + SO	9.76e-12	0.00	4545.00	1250 - 1600
16	SO₂ + PHOTON → SO + O	1.90e-9	0.00	2.40	10 - 41000

Variation of log fractional abundance (relative to H₂) with log time (years) in a dark cloud model. Ref. RATE12 paper.

SO2

SO₂