Table 1. Aqueous Reactions and Rate Constants in Glyoxal + OH Radical Model^a.

reaction	rate constant (M−1 s−1)	footnote
	1.1 × 10−4	b
	2.7 × 107
	3.7
	8.3 × 105
	7.1 × 109
	1.1 × 109
	3.62 × 108
	2.9 × 109
	1.4 × 106	c
	4.7 × 107
	7.7 × 106
	Keq = 1.0 × 10−14, ka = 1.4 × 1011
	Keq = 1.6 × 10−5, ka = 5.0 × 1010
	Keq = 3.47 × 10−4, ka = 2.0 × 1010
	Keq = 5.67 × 10−2, ka = 5.0 × 1010
	Keq = 5.42 × 10−5, ka = 5.0 × 1010
	2.4 × 109
	0.3	d
	1.0 × 108
	2.4 × 109
	Keq = 1.77 × 10−4, ka = 5.0 × 1010
	1 × 1010
	1 × 107
	6.5 × 108
	1.5 × 105
	8 × 105
	Keq = 4.3 × 10−7, ka = 5.6 × 104
	Keq = 4.69 × 10−11, ka = 5 × 1010

^aReactions are taken from Lim et al. (25) and references therein except where footnoted. GLY = glyoxal, GLYAC = glyoxylic acid, OXLAC = oxalic acid, OH = OH radical. Dissociation rate constants (k_d, s⁻¹) are calculated from the equilibrium constant (K_eq, M) and association rate constants (k_a, M⁻¹ s⁻¹) by k_d=K_eq× k_a.

^bHydrogen peroxide photolysis rate (k₁, s⁻¹) is estimated by fitting H₂O₂ loss in H₂O₂ + UV control experiments.

^cThe reaction between oxalic acid and dissolved oxygen was removed from the initial mechanism as no reaction was observed in control experiments.

^dThis reaction was measured by Leitzke et al. (34) and was not included by Lim et al.