and conc q30 q60 qt q30 q60 qt q30 q60 qt q30 q60 qt__________________________________________________________________________lithium salicylate 305 320 320 163 201 n a 93 n a n a 26 44 n a7 5 u00d7 10 sup 3 mlithium 5 t butyl salicylate 310 n a n a 150 n a n a 74 n a n a n a7 5 u00d7 10 sup 3 mlithium 2 chlorobenzoate 285 n a n a 143 n a n a 71 n a n a n a 5 u00d7 10 sup 3 msodium salicylate 160 291 650 29 45 205 11 14 22 7 8 172 5 u00d7 10 sup 4 msodium trifluoroacetate 590 590 590 176 266 410 20 37 211 4 7 1101 25 u00d7 10 sup 2 mtetrabutylammonium salicylate 197 342 600 52 73 426 36 46 66 9 17 442 5 u00d7 10 sup 4 m__________________________________________________________________________ q30 is the light yield during the first 30 minutes after mixing the system at the indicated temperature in units of lumin hours per liter q60 is the yield in 60 minutes and qt is the total yield as indicated in table 1 the catalysts of this invention offer improved performance over sodium salicylate sodium trifluoroacetate and tetrabutylammonium salicylate catalyzed systems the lithium salts give approximately 7 to 9 times higher yields at 20 u00b0 c 4 u00b0 f and extend usefulness of the chemical light to even lower temperatures it is within the scope of this invention to make such modifications of the compositions and processes disclosed herein as would be obvious to person of ordinary skill in this art and it is to be understood that the examples illustrating this invention are intended to limit the invention only insofar as is stated in the specification and as the following claims are limited.