Sulfuric Acid → 1-Octadecanaminium, N,N-dimethyl-N-octadecyl-, sulfate (1:1)

HRID 1032863Notes

Reaction equation

HRID 1032863 reaction equation
C(O)(C)C.[S:5](=[O:9])(=[O:8])([OH:7])[OH:6].COS([O-])(=O)=O.[CH2:16]([N+:34]([CH2:37][CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43][CH2:44][CH2:45][CH2:46][CH2:47][CH2:48][CH2:49][CH2:50][CH2:51][CH2:52][CH2:53][CH3:54])([CH3:36])[CH3:35])[CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH3:33]>O>[S:5](=[O:7])(=[O:6])([OH:9])[O-:8].[CH2:37]([N+:34]([CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH3:33])([CH3:36])[CH3:35])[CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43][CH2:44][CH2:45][CH2:46][CH2:47][CH2:48][CH2:49][CH2:50][CH2:51][CH2:52][CH2:53][CH3:54]

Participants

5

Reactant 3

HCID 1118Sulfuric AcidHCID 3776IsopropanolHCID 77450Dimethyldioctadecylammonium methyl sulfate

Product 1

HCID 935451-Octadecanaminium, N,N-dimethyl-N-octadecyl-, sulfate (1:1)Yield 75.8%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent4×

Conditions

Temperature
840 °C

Procedure

Seventy-five (75) kilograms of isopropyl alcohol and 25 kilograms of deionized water were charged in a 50 gallon glass lined reactor. The reactor agitator (three armed retrieve curve impeller) was started at 100 RPM and full cooling (water at 8° to 10° C.) was applied to the reactor jacket. Eighteen (18) kilograms of 93 percent sulfuric acid (technical grade) were added slowly to the reactor, after which 30 kilograms of technical grade distearyl dimethyl ammonium methylsulfate (obtained from Zeeland Chemical Co., d Cambrex Company formerly Hexcel Company of Zeeland, Mich.) were charged in the reactor. The reactor loading port was closed and cooling water was applied to the reactor reflux condenser and the agitator speed adjusted to 150 RPM. The reactor was heated to approximately 840° C. using hot water supplied to the reactor jacket. The reaction was effected for 4 hours under a slight reflux after which cooling was applied to initiate the crystallization. The mixture was agitated for two hours under full cooling at 16° to 18° C. before transferring to a 70 gallon agitated Nutsche vacuum filter. The filtrate was drained and collected in a storage vessel for solvent recovery or disposal. The wet cake was reslurried with 100 kilograms of the second wash filtrate from the previous batch (containing an approximate 75:25 ratio of isopropanol and water) for 30 minutes, after which the filtrate (about 100 kilograms) was drained by vacuum filtration and collected in order to be used as the solvent system for the next synthesis batch. After additional reslurry washes were performed using wash filtrates from a previous batch, the wet cake was discharged from the filter and recrystallized from 100 kilograms of isopropanol In a 50 gallon glass lined reactor. This was performed by dissolving the materials under agitation at 600° C., cooling and recovering the wet dimethyl distearyl ammonium bisulfate cake by filtration. After vacuum drying, 22.27 kilograms (75.8 percent yield) of recrystallized distearyl dimethyl ammonium bisulfate were recovered. Analyticals: melting point (DSC) 91.4° C., H2O content 0.65 percent, bisulfate content (by titration) 14.65 percent.

Workup

  1. addition) were charged in the reactor
  2. customwas closed
  3. temperaturereflux condenser
  4. temperatureunder a slight reflux after which
  5. temperaturecooling
  6. customthe crystallization
  7. temperatureunder full cooling at 16° to 18° C.
  8. stirringagitated Nutsche vacuum
  9. filtrationfilter
  10. customcollected in a storage vessel for solvent recovery or disposal
  11. additioncontaining an approximate 75:25 ratio of isopropanol and water) for 30 minutes
  12. filtrationafter which the filtrate (about 100 kilograms) was drained by vacuum filtration
  13. customcollected in order
  14. washAfter additional reslurry washes were performed using wash filtrates from a previous batch
  15. filtrationfilter
  16. customrecrystallized from 100 kilograms of isopropanol In a 50 gallon glass
  17. dissolutionby dissolving the materials under agitation at 600° C.
  18. temperaturecooling
  19. customrecovering the wet dimethyl distearyl ammonium bisulfate cake
  20. filtrationby filtration
  21. customAfter vacuum drying

Sources & evidence

ORD record
ord-e62a457d845a41ecb2e8d49c6375ba1d
Source dataset
uspto-grants-1994_05
Patent number
US05308363

Reaction notes

Loading…