Pigment Yellow 139

Product NamePIGMENT YELLOW 139
SynonymsC.I.Pigment Yellow 139; C.I.PY139; PY139; P.Y.139
CAS NO.36888-99-0
Molecular Weight367.27
Molecular FormulaC16H9N5O6
ColorYellow powder

Molecular structure formula:

Fastness Properties of Pigment Yellow 139:

Light Fastness6
Heat Resistance(℃)200
Water Resistance4
Oil Resistance5
Acid Resistance5
Alkali Resistance5
Alcohol Resistance4

Main application: Plastic

We have various pigment grades and properties to meet different customers’ needs, please specify your application and requirements so that we can recommend accordingly.  E-mail: sy@sypigment.com

Product Description of Pigment Yellow 139:

Pigment Yellow 139 is suitable for paint, plastic and printing ink. The different particle size distribution shows different color characteristics. The hue angle can be 78, 71, 66 degrees depending on the average particle size; the non-transparent type presents stronger red light ( Paliotol Yellow 1970 has a specific surface area of 22m2/g and L2140HD has a specific surface area of 25m2/g). Increasing the concentration does not affect gloss and has excellent light and weather fastness; it can be used with inorganic pigments to replace chrome yellow. It is suitable for high-end coatings (auto repair paint), with light resistance of 7-8 (1/3SD) in alkyd melamine resin; resistance to bleeding in soft PVC, and temperature resistance of 250 in HDPE (1/3SD) ℃, suitable for polypropylene.

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. The species is prepared by addition of ammonia to o-phthalonitrile to give the diiminoisoindoline, which in turn condenses with barbituric acid.

TDS (Pigment Yellow 139) MSDS (Pigment Yellow 139)


  • 36888-99-0
  • 5,5'-(1H-Isoindole-1,3(2H)-diylidene)dibarbituric acid
  • 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5,5'-(1H-isoindole-1,3(2H)-diylidene)bis-
  • 5-[3-(6-hydroxy-2,4-dioxo-1H-pyrimidin-5-yl)isoindol-1-ylidene]-1,3-diazinane-2,4,6-trione
  • C.I. Pigment Yellow 139
  • EINECS 253-256-2
  • 1,3-Di(2,4,6-trioxohexahydro-5-pyrimidinylidene)isoindole
  • EC 253-256-2
  • UNII-ZW25289FVV
  • SCHEMBL2734090
  • ZW25289FVV
  • DTXSID7068007
  • ZINC100048699
  • 888P990
  • W-109220

IUPAC Name: 5-[3-(6-hydroxy-2,4-dioxo-1H-pyrimidin-5-yl)isoindol-1-ylidene]-1,3-diazinane-2,4,6-trione
InChI: InChI=1S/C16H9N5O6/c22-11-7(12(23)19-15(26)18-11)9-5-3-1-2-4-6(5)10(17-9)8-13(24)20-16(27)21-14(8)25/h1-4H,(H2,18,19,22,23,26)(H3,20,21,24,25,27)
Canonical SMILES: C1=CC=C2C(=C1)C(=C3C(=O)NC(=O)NC3=O)N=C2C4=C(NC(=O)NC4=O)O

Property NameProperty Value
Molecular Weight367.27
Hydrogen Bond Donor Count5
Hydrogen Bond Acceptor Count7
Rotatable Bond Count1
Exact Mass367.055283
Monoisotopic Mass367.055283
Topological Polar Surface Area166 Ų
Heavy Atom Count27
Formal Charge0
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently-Bonded Unit Count1
Compound Is CanonicalizedYes