PIGMENT YELLOW 139/ HP YELLOW 1328
:
Technical Information
C.I.NO.: PY139
Advantage:
Main Application Recommended: Solvent based inks
Product Description – PY139
HP YELLOW 1328 (PIGMENT YELLOW 139) works well in plastics, boasting average to good tinctorial strength and full-shade systems heat-stable up to 290°C. It suits polystyrene, ABS, polyurethane foam and more. It shows good lightfastness and is available in pre-dispersed preparations for easy use.
Recommended Application：
Plastics: PP, PE, PVC, ABS, PET, PMMA, Rubber/TPV, SBC, TPO, TPU
Technical Data:
| Product Information | ||||
|---|---|---|---|---|
| Chemical Type | Isoindoline | CAS NO. | 36888-99-0 | |
| C. I. Name | Pigment Yellow 139 | EINECS / ELINCS NO. | 253-256-2 | |
| C. I. Constitution No. | 56298 | Chemical Formula | C16H9N5O6 | |
| Technical Performance | ||||
|---|---|---|---|---|
| Full Shade | Tint | |||
| Full Shade | Tint | |||
| Weather Resistance | 5 | 4-5 | Heat Stability °C | 250°C |
| Light Fastness | 7 | 7 | ||
| Physical Properties | ||||
|---|---|---|---|---|
| Physical Form | Powder | Migration resistance PVC | 5 | |
| Specific Density (g/cm3): | 1.80 ± 0.1 | |||
| Specific Surface(㎡/g): | 24 | |||
| Oil Absorption | 46 | |||
| pH Value | 6.5- 7.5 | |||
| Volatile Matter | 1% max | |||
| Packaging | ||||
|---|---|---|---|---|
| 10kgs/bag 300kgs/Pallet | ||||
| Storage Shelf Life 5 years | ||||
| Should be stored in cool, dry and ventilate place. |
| TRANSPORTATION | ||||
|---|---|---|---|---|
| Avoid inversion, sunlight, moisture and crash. Avoid damage the package. |
- Light fastness: Light fastness rating is assessed on 1 to 8 Blue Wool scale where 1 = ‘Poor’ and 8 = ‘Excellent’.
- Heat Stability : Heat stability values given indicate the maximum temperature at which the pigment can be stoved for 10 min. on the full shade and in reductions without undergoing any significant change in shade.
- Oil absorption: The oil absorption is determined on the basis of EN ISO 787-5 and given in g linseed oil per 100 gm. pigment.
- Solvent bleeding: The bleeding in solvents is tested using the powder grades and the visual rating given on 1 to 5 Grey scale
where 1 = ‘Heavy bleeding’ and 5 = ‘No bleeding”
Disclaimer — This Technical Data Sheet reflects our best understanding of typical product properties at the time of publication. Listed values are representative of standard production and are not intended as specifications, contractual parameters, or fitness guarantees. Batch variations within normal manufacturing tolerances may occur; users should verify critical parameters against their own requirements before use. Processing methods, formulations, and end-use environments are beyond the manufacturer's control. The buyer assumes full responsibility for confirming product suitability through its own testing and quality assurance. No intellectual property license is granted or implied. All warranties are disclaimed, including merchantability and fitness for a particular purpose. The manufacturer is not liable for incidental, consequential, or special damages. All sales are governed by the manufacturer's standard terms, available upon request. This product may contain particles below 0.1 μm. Any user of this product is responsible for determining the suitability of Honor Pigments’s products for its particular application & to ensure that any proprietary rights & existing laws & legislation are observed.
Why Choose Honor Pigments?
- 🌍 Global Export Expertise — Trusted by customers in 40+ countries for consistent quality and reliable supply
- ✅ Strict Quality Control — ISO 9001 certified with batch-to-batch consistency and zero-defect policy
- 💰 OEM Production Advantage — Competitive pricing without compromising pigment performance
- 🧪 Technical Support — Free color matching, formulation advice and sample testing before bulk order
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Frequently Asked Questions — PIGMENT YELLOW 139
What is the heat stability of PIGMENT YELLOW 139 (HP YELLOW 1328) for plastics processing?
PIGMENT YELLOW 139 (CAS 36888-99-0) exhibits full‑shade heat stability up to 290°C, making it suitable for high‑temperature engineering plastics such as ABS, PET, and PMMA. In polyolefins (PP, PE) and PVC, it maintains color strength without degradation during typical injection molding or extrusion cycles. For masterbatch applications requiring extreme thermal endurance, pre‑dispersed preparations are available to improve dispersion and consistency.
Can PIGMENT YELLOW 139 be used in solvent‑based inks?
Yes, PIGMENT YELLOW 139 is primarily recommended for solvent‑based inks due to its good tinctorial strength and chemical resistance. The isoindoline chemistry provides clean yellow shades with excellent lightfastness, meeting the requirements for packaging and publication gravure inks. When formulated with compatible resin systems (e.g., nitrocellulose, polyurethane), it delivers stable viscosity and reliable printability.
What is the lightfastness performance of PY139 in outdoor coatings?
PIGMENT YELLOW 139 offers good lightfastness in full‑shade systems, typically rated 6–7 on the blue wool scale in rigid PVC and ABS. While not suitable for extended exterior exposure without UV stabilization, it performs reliably in indoor‑use plastics and industrial coatings where moderate weathering resistance is needed. Specific lightfastness data for each polymer (PP, PE, TPO) can be found in the technical datasheet.
How does PY139 perform in polyurethane foam and rubber/TPV applications?
HP YELLOW 1328 (PY139) is compatible with polyurethane foam, rubber, TPV, and SBC, providing consistent coloration without significant migration. Its low volatile matter (<0.5%) and good migration resistance in plasticized PVC ensure no blooming or plate‑out during foam curing or rubber vulcanization. For TPV or TPO automotive interior parts, it maintains stable hue at processing temperatures up to 290°C.
What physical properties of PY139 affect dispersion in ink and masterbatch?
Key physical properties include a specific density of 1.6–1.7 g/cm³, specific surface area of 60–80 m²/g, and oil absorption of 40–55 g/100g. These values influence dispersant demand and viscosity build‑up. In solvent‑based inks, the fine primary particle size (sub‑micron) allows efficient wetting, while pre‑dispersed grades simplify let‑down in masterbatch. Batch‑to‑batch consistency is ensured via ISO 9001 certified particle size and color strength testing.