Definition of "triphenylguanidine"

Phenyl mustard oil […] is obtained by boiling sulphocarbanilide with concentrated hydrochloric acid, some triphenylguanidine being formed at the same time.

1911, Encyclopædia Britannica

The patentee in his specifications speaks of triphenylguanidine and compares its operation as an accelerator with that guanidine, the utility of which as an accelerator he claims to have discovered, called diphenylguanidine.

1929, Decisions of the Commissioner of Patents and of the United States Courts in Patent and Trade-mark and Copyright Cases, page 256