448 



13 



4.830,028 



14 



vV 



A 



4. The cigarette of claim 3 wherein the additive is a 

 blend of nicotine levulinale and at least one other salt 

 consisting of nicotine and an organic acid. 



5. The cigarette of claim I. 2, 3 or 4 wherein the pH 

 of the mainstream aerosol thereof is essenlially equal to 5 

 or less than that of the cigarette not having the salt 

 additive incorporated therein. 



6. A cigarette having incorporated therein as an addi- 

 tive at least one salt consisting of nicotine and an or- 

 ganic acid such thai the ratio of FTC "tar" to FTC 10 

 nicotine of the cigarette is less than about 7. 



7. The cigarette of claim 6 wherein the ratio of FTC 

 "lar" to FTC nicotine ranges from about 3 to about 6. 



8 The ci garette o f claim 6 or 7 wherein the pH of the 

 "mamstreairraerosof^ is essenlially equal to or less than 



thai of the cigarette not having the salt additive incor- 

 porated therein- 



9 The cigarette of claim 6 wherein the organic acid is 

 leviilinic acid. 



10. The cigarette of claim 6 wherein the additive is a " 

 blend of nicotine levulinale and at least one other salt 

 consisting of nicotine and an organic acid, 



1 1 . The cigarette of claim 6 wherein the organic acid 



is an aliphatic monocarboxylic acid. ., 



12. A cigarette having incorporated therein as an 

 additive at least one salt consisting of nicotine and an 

 aliphatic monocarboxylic acid in an amount sufficient to 

 reduce the pH of the mainstream aerosol provided dur- 

 ing use of the cigarette. j^ 



13. The cigarette of claim 12 wherein the aliphatic 

 monocarboxylic acid is a gamma kelo aliphatic mono- 

 carboxylic acid. 



14. The cigarette of claim 13 wherein the acid is 

 levulinic acid. ^5 



15. Tobacco cut filler including a nicotine levulinate 

 additive. 



16. The cigarette of claim 1. 2, 3, 4, 6, or 12 which is 

 equipped with a means for providing air dilution 

 thereto. 40 



17. The cigareilc of clami 1. 3 or 10 mchiding smok- 

 ablc filler material wherein the sail additive is incorpo- 

 rated in an amount ranging from about I percent to 

 about 10 percent, based on weight of the salt and the 

 filler material of the cigarette 45 



IS A cigarette h aving incorporated therein as addi- 

 tives (i) at least dtf salt consisting of nicotine and an 

 organic acid, at least one of the salts having a molar 

 ratio of nicotine to organic acid of l-.V and (ii) nicotine. 



19- The cigarette of claim 18 wherein the organic acid 50 

 is an aliphatic monocarboxylic acid. 



20. The cigarette of claim 18 or 19 wherein the ratio 

 of FTC "tar" to FTC nicotine is le.ss than about 7. 



21. The cigarette of claim 18 or 19 wherein ihe ratio 

 of FTC "tar" to FTC nicotine ranges from about 3 to 55 

 about 6. 



22- The cigarette of claim 18 which is equipped with 

 a means for providing air dilution thereto 



24 The cigarette of claim 23 wherem the ratio of 

 FTC "tar" to FTC nicotine thereof is less than about 7 



25. The cigarette of claim 23 wherein the ratio of 

 FTC "tar" to FTC nicotine ranges from about 3 to 

 about 6. 



26. The cigarette of claim 23 which is equipped with 

 a means for providing air dilution thereto. 



27. The cigarette of claim 23 further comprising as an 

 additive a salt consisting of nicotine and an organic acid. 



28. A smoking article having nicotine levulinatc in- 

 corporated therein as an additive 



29 The smoking article of claim 28 further compris- 

 ing nicotine as an additive. 



30. A cigarette having incorporated therein as addi- 

 tives (i) at least one salt wherein one -WMri is nicotine ^o\\ 

 levulinate. and (ii) nicotine. 



31 The cigarette of claim 30 wherein the ratio of 

 FTC "lar" to FTC nicotine is less than about 7. 



32. The cigarette of claim 30 wherein the ratio of 

 FTC "tar" to FTC nicotine ranges from about 3 to 

 about 6. 



33. The cigarette of claim 30 which is equipped with 

 a means for providnig air dilution thereto. 



34. Synthetically produced substantially pure nico- 

 tine levulinate. 



35. The cigarette of claim 2! wherein the salt is nico- 

 tine levulinate. 



36. The cigarette of claim 1. 3. 6. 9. 12 or 14 including 

 smokable filler material wherein the cigarette has Ihe 

 additive incorporated therein as an additive to at least a 

 portion of Ihe filler material. 



37. The cigarette of claim 18, 23, 24, 27, 30, 31 or 35 

 including smokable filler material wherein the cigarette 

 has the additives incorporated therein as additives to at 

 least a portion of the filler material. 



38 The smoking article of claim 28 including smok- 

 able filler material wherein the smoking article has the 

 additive incorporated therein as an additive to at least , 



a portion of Ihe filler material^ cl.o^«*^ 



39 The cigarette of c"«4i»rrrXT97T2. 14. 18. 23. 24. 

 27, 31, 32 or 36 including smokable filler material 

 wherein at least a portion of the smokable filler material 

 is selected from burley tobacco, fine-cured tobacco, 

 volume expanded tobacco and reconstituted tobacco 



40. The smoking article of claim 28 including smok- 

 able filler material wherein at least a portion of the 

 smokable filler material is selected from burley tobacco. 

 fiue-cured tobacco, volume expanded tobacco and re- 

 constituted tobacco. 



41. The cigarette of claim 4, 18. 21 or 30 including 

 smokable filler material wherein the salt additive is 

 incorporated in an amount ranging from about 1 per- 

 cent to about 10 percent, based on the weight of ihe salt 

 additive and the filler material of the cigarette. 



42. The tobacco cut filler of claim 15 wherein the 

 amount of nicotine levulinate ranges from about 1 per- 

 cent to about 10 percent, based on the weight of the 

 nicotine levulinate and the filler. 



43. The cigarette of claim 1, 3. 4, 10. 18, 21 or 30 



23 A cigarette including smokable filler material and 



having incorporated therein as additives (i) nicotine and 60 including smokable filler material wherein the salt addi- 



(ii) levulinic acid, wherein the nicotine and levulinic tive is incorporated in an amount of .ibout 3 percent or 



acid additives are incorporated in the cigarette such that more, based on the weight of the salt additive and the 



the molar ratio of nicotine additive to levulinic ,icid filler material of the cigarette. 



additive is about 1 :3, and such that the amount of nico- 44. The tobacco cut filler of claim 15 wherein the 



tine and levulinic acid additives incorporated in the 65 amount of nicotine levulinate is about 3 percent or 

 cigarette is greater than or equal to about 3 percent, more, based on Ihe weight of the nicotine levulinatc and 



based on the weight of the nicotine additive, the levu- (he filler, 



linic acid additive ami iho filler material of Ihe cigarette. • • • • * 



