Chlorination of Methane HwC+一H H H H-C-H+Ck heat or light H-C-CI HCI H Requires heat or light for initiation. The most effective wavelength is blue,which is absorbed by chlorine gas. Lots of product formed from absorption of only one photon of light(chain reaction). Chapter 4 3 Chapter 4 3 Chlorination of Methane • Requires heat or light for initiation. • The most effective wavelength is blue, which is absorbed by chlorine gas. • Lots of product formed from absorption of only one photon of light (chain reaction). => C H H H H + Cl 2 heat or light C H H H Cl + HCl