Pigment Yellow 139 

Pigment Yellow 139 is a biological dye and indicator. Pigment Yellow 139 is an organic pigment and an additive for color filters of liquid crystal displays. When formulated in a dye-pigment hybrid system, Pigment Yellow 139 can form color filters with specific chromaticity coordinates, brightness, contrast, and average particle size^[1].

Pigment Yellow 139 shows a maximum absorption wavelength of 466 nm and a full width at half maximum of 85 nm in NMP solution^[1].
Pigment Yellow 139, when formulated into a G58/Pigment Yellow 139 hybrid colour filter, exhibits chromaticity coordinates x = 0.2532, y = 0.5730, a brightness of 53.6, a contrast ratio of 13778, and an average particle size of 42.3 nm^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

367.27

C₁₆H₉N₅O₆

36888-99-0

Solid

Light yellow to orange

O=C1NC(/C(C(N1)=O)=C2N/C(C3=C\2C=CC=C3)=C4C(NC(NC\4=O)=O)=O)=O

Room temperature in continental US; may vary elsewhere.

-20°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

• [1]. Jong Min Park, et al. Synthesis of yellow pyridonylazo colorants and their application in dye–pigment hybrid colour filters for liquid crystal display. Color. Technol., 133, 158–164.