Pigment yellow 139 is an organic compound that is used as a yellow-orange pigment. It is classified as a derivative of isoindoline. This yellow-orange solid is virtually insoluble in most solvents.[1]
Names | |
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Preferred IUPAC name 5,5′-(1H-Isoindole-1,3(2H)-diylidene)di(1,3-diazinane-2,4,6-trione) | |
Other names Lithol, Fast Yellow 1840 | |
Identifiers | |
3D model (JSmol) | |
ChemSpider | |
ECHA InfoCard | 100.048.399 |
EC Number |
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PubChem CID | |
UNII | |
CompTox Dashboard (EPA) | |
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Properties | |
C16H9N5O6 | |
Appearance | orange solid |
Density | 1.742 g/cm3 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
It is prepared by addition of ammonia to phthalonitrile to give diiminoisoindole, which in turn condenses with barbituric acid.[2]
References
External links
Wikimedia Commons has media related to Pigments.
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