Sulfuric Acid → Quinacridone

HRID 1090961Notes

Reaction equation

HRID 1090961 reaction equation
S(=O)(=O)(O)O.C(OS(C1C=CC=CC=1)(=O)=O)CCCCCCCCCCC.C([NH3+])(C)C.C[C:33]1[CH:38]=[CH:37][C:36]2[NH:39][C:40]3[C:45]([C:46](=[O:47])[C:35]=2[CH:34]=1)=[CH:44][C:43]1[NH:48][C:49]2[CH:56]=[CH:55][C:54](C)=[CH:53][C:50]=2[C:51](=[O:52])[C:42]=1[CH:41]=3>>[CH:54]1[CH:53]=[C:50]2[C:51]([C:42]3[C:43]([NH:48][C:49]2=[CH:56][CH:55]=1)=[CH:44][C:45]1[C:46]([C:35]2[C:36]([NH:39][C:40]=1[CH:41]=3)=[CH:37][CH:38]=[CH:33][CH:34]=2)=[O:47])=[O:52]

Participants

4

Reactant 3

HCID 1118Sulfuric AcidHCID 704235,12-Dihydro-2,9-dimethylquino(2,3-b)acridine-7,14-dioneHCID 131717156HCID 131717156, compound

Product 1

HCID 13976Quinacridone

Procedure

A suitable vessel is charged with 8182 kg of 1.5% sulfuric acid, 68.2 kg of isopropylammoniumdodecylbenzene sulfonate and 4909 kg of mill powder from above. The mixture is heated near its boiling point for 3 hours after which the pigmentary solid solution of 2,9-dimethylquinacridone and quinacridone is isolated in a suitable filtration device and washed free of acid and salts. The resulting water wet pigment may be either dried as such or further treated depending on the desired end use.

Workup

  1. temperatureThe mixture is heated near its
  2. customfor 3 hours

Sources & evidence

ORD record
ord-9abcc5969f7a4e5ab9effd71caf55501
Source dataset
uspto-grants-1992_01
Patent number
US05084100

Reaction notes

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