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The dependence of the chemiluminescence intensity of tetrakis-(dimethylamino)ethylene (TDE) on the concentration of TDE and methanol activator has been shown to be to the second power for each compound. In addition to being activated by methanol, a quenching rate constant of 9.3 x 10s/M/sec for methanol on the excited state of TDE was shown to cause a decrease of chemiluminescence intensity at high concentrations. Chemical reactions of TDE di-cation in basic solutions indicated that a disproportionation occurs which produces a 50 per cent yield of TDE. On the basis of the kinetics and chemistry of TDE, a mechanism of chemiluminescence is proposed in which the excited state of TDE is produced by a bisdimethylaminocarbene dimerization.

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