Pigment Yellow 12 (Diarylide Yellow AAA, Benzidine Yellow G)
CAS Number: 6358-85-6
Pigment Yellow 12 (PY 12) is a classic diarylide (disazo) yellow pigment used extensively in gravure, flexo, and offset publication and packaging inks where a bright, reddish-yellow hue with moderate cost is required. PY 12 provides good lightfastness for indoor applications, excellent gloss, and high transparency, making it the workhorse yellow for process four-color printing in newspaper supplements, magazines, and packaging cartons.
Technical Specifications
| appearance | Reddish-yellow fine powder |
| moisture (%) | ≤1.0 |
| heat stability (°C) | 160–180 |
| particle size (d50, µm) | 0.1–0.5 |
| lightfastness (blue-wool) | 4–5 |
Applications
- Process yellow in offset four-color printing inks
- Flexo yellow ink for paper and corrugated packaging
- Gravure yellow ink for publication and packaging
- Newspaper supplement ink process yellow
- General-purpose screen-printing yellow inks
Key Features
- Bright reddish-yellow hue ideal for process four-color printing
- High transparency for excellent color gamut in overprinted areas
- Good gloss development in all printing ink vehicles
- Cost-effective general-purpose yellow for high-volume packaging inks
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