With Oxygen, Ozone, and the Hydroxy Radical OH

The inflammability limit and the lower explosive limit of Pb(CH3)4 in air is 1.8% by volume [14, 19]. Concentrations of Pb(CH3)4 well below the lower limit of inflammability can detonate in shocked mixtures of oxygen and Pb(CH3)4 [15]. The flash point is 38 C (100°F) [19]. 

The main homogeneous reactions of Pb(CH3)4 in the atmosphere are photolytic breakdown and reactions with O3, 0( P), and OH. The reactions are principally those of photochemical oxidation, with attack by OH representing the main reaction pathway [17]. For photolytic rate constants in purified dry air, see Section 1.1.1.1.4.2, p.126. For studies of the lifetime of Pb(CH3)4 in air, see Section 1.1.1.1.9, p.179. 

The second-order rate constant for the dark reaction of ozone with Pb(CH3)4 in air at 295 + 3 K and 1 atm in a static system at O3 concentrations of about 0.3 to 0.8 ppm was determined 0.07x10 

Ozonolysis of Pb(CH3)4 Is assumed to proceed via Insertion of O3 Into the Pb-C bond with subsequent fragmentation Into (CH3)3PbOOH and CH2O [17] see also [22]. 

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