persulphocyanogen

from The Century Dictionary.

• noun A yellow amorphous powder, C₃HN₃S₃, formed by oxidizing sulphocyanic acid with nitric acid, chlorin, or hydrogen peroxid. Also called cyanoxysulphid, perthiocyanogen, pseudosulphocyanogen, and cyanogen sulphid. Probably identical with the yellow dye canarin.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) An orange-yellow substance, produced by the action of chlorine or boiling dilute nitric acid and sulphocyanate of potassium; -- called also pseudosulphocyanogen, perthiocyanogen, and formerly sulphocyanogen.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun organic chemistry thiocyanogen