organic sulfur compounds organic boron compounds organic phosphorus compounds natural oils and natural and synthetic resins of low molecular weight specific examples of such readily oxidizable organic materials include the following 1 octadecene 1 hexadecene 1 docosene isobutylene trimer and tetramer dicyclopentadiene myrcene ocimene farnesene phellandrene lycopene squalene digeranyl carotenes limonene u03b1 pinene u03b2 pinene dibenzyl ether bis u03b1 methylbenzyl ether p allylanisole polyethylene glycol and derivatives polypropylene glycol and derivatives poly tetrahydrofuran and derivatives u03b1 amyl cinnamaldehyde dimethyl acetal citral dimethyl acetal dihydro safrole hydratropic aldehyde dimethyl acetal isosafrole methyl eugenol safrole phenylacetaldehyde diethyl acetal 2 2 diallyloxypropane pentaerythritol diformal p dibenzyloxy benzene 1 1 2 2 tetra allyloxy ethane 1 1 3 3 tetra allyloxy propane indene and substituted indenes tetralin and derivatives fluorene and substituted fluorenes 9 9 39 bifluorene bibenzyl 1 2 dihydronaphthalene 1 3 5 triisopropylbenzene 1 2 4 5 tetraisopropylbenzene 9 10 dihydroanthracene diphenylmethane phenylcyclohexane xanthene n dodecylbenzene alkyl naphthalenes allyl benzene divinylbenzene methallylbenzene cumene allyl and methallyl derivatives of naphthalene anthracene etc heliotropin 3 benzyloxybenzaldehyde 4 benzyloxylbenzaldehyde p n octyloxybenzaldehyde decanal 10 undecenal dodecanal 2 methylundecanal n tetradecanal u03b1 amylcinnamaldehyde cinnamaldehyde citral citronellal p isopropylbenzaldehyde p isopropyl alpha methylhydrocinnamaldehyde u03b1 n hexylcinnamaldehyde salicyladehyde benzyl mercaptan 1 dodecanethiol 2 mercaptobenzimidazole 1 decanethiol benzenethiol p toluenethiol 1 octadecanethiol p methoxybenzenethiol 2 mercaptobenzothiazole dibenzyl sulfide dibenzyl disulfide dilauryl sulfide dilauryl disulfide benzenesulfinic acid p toluenesulfinic acid rosin limed rosin ester gum rosin acids rosin esters terpene resins coumarone indene resins alkyd resins dicyclopentadiene derived resins furan resins polymers and copolymers of butadiene polymers and copolymers of isoprene unsaturated polyester.