PIGMENT ORANGE 16/ HP ORANGE 3547
Reddish, High color strength
Technical Information
C.I.NO.: PO16
Advantage: Reddish, High color strength
Main Application Recommended: Solvent based inks, Solvent based coatings, Industrial paints
Product Description – PO16
HP ORANGE 3547 (PIGMENT ORANGE 16) is a yellowish orange, which is considerably redder than P.O.13 and 34. It has less durability of light fastness, weather fastness, solvent fastness. It is mainly used for packaging inks, metal inks and specialty inks. It is normally blended with PY12 to provide higher transparency.
Recommended Application：
Coatings: solvent based coatings, water based coatings, industrial coatings, powder coatings, wood coatings
Plastics: PP, PE, PVC, PS/SAN, ABS, Rubber/ TPV
Printing inks: offset inks, solvent based inks, water based inks
Technical Data:
| Product Information | ||||
|---|---|---|---|---|
| Chemical Type | Azo | CAS NO. | 6505-28-8 | |
| C. I. Name | Pigment Orange 16 | EINECS / ELINCS NO. | 229-338-1 | |
| C. I. Constitution No. | 21160 | Chemical Formula | C₃₄H₃₂N₆O₆ | |
| Technical Performance | ||||
|---|---|---|---|---|
| Full Shade | Tint | |||
| Full Shade | Tint | |||
| Weather Resistance | 4-5 | 3 | Heat Stability °C | 200°C |
| Light Fastness | 4-5 | 4 | ||
| Physical Properties | ||||
|---|---|---|---|---|
| Physical Form | Powder | Resistance to Acid | 4-5 | |
| Specific Density (g/cm3): | 1.28~1.51 | Resistance to Alkali | 4-5 | |
| Specific Surface(㎡/g): | 40 | |||
| Oil Absorption | 30-50 | |||
| pH Value | 6.0 – 7.0 | |||
| Volatile Matter | 1% max | |||
| Packaging | ||||
|---|---|---|---|---|
| 10kgs/bag 500kgs/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.
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- 🌍 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 ORANGE 16
What specific applications does PIGMENT ORANGE 16 (PO16) excel in for ink and coating systems?
PIGMENT ORANGE 16 (C.I. PO16) is specifically recommended for solvent-based inks, solvent-based coatings, and industrial paints due to its high color strength and reddish-yellow hue. For printing inks, it is primarily formulated into packaging inks, metal inks, and specialty inks, often blended with PY12 to achieve specific shades. While it can be used in water-based systems with appropriate dispersants, its light fastness and weather fastness are lower than alternatives like PO13 or PO34, making it best suited for indoor or short-term applications.
How does the chemical and physical property profile of HP ORANGE 3547 (PO16) support solvent-based ink formulations?
HP ORANGE 3547 (PIGMENT ORANGE 16) offers a reddish-orange shade with significantly higher color strength than PO13 or PO34, which is critical for achieving vibrant, opaque prints in solvent-based systems. Its EINECS and C.I. Constitution Number data confirm it as a standard monoazo pigment, and its physical properties (including specific density and resistance to acid/alkali) ensure stable dispersibility in solvent carriers like esters and ketones. However, formulators should note that its solvent fastness is limited, so it is optimized for applications where long-term contact with aggressive solvents is minimal, such as packaging inks and metal inks.
What plastic substrates are compatible with PIGMENT ORANGE 16 for masterbatch or molding applications?
PIGMENT ORANGE 16 (PO16) is compatible with a broad range of plastics including PP, PE, PVC, PS/SAN, ABS, and rubber/TPV. Its recommended heat stability up to 200°C (per technical data) ensures reliable processing in injection molding, extrusion, and blow molding for applications like consumer goods and automotive interior parts. The pigment’s light fastness is lower than high-performance grades, so it is better suited for indoor products where UV exposure is controlled. For plastics requiring higher weather resistance, alternative pigments should be evaluated.
Why is PIGMENT ORANGE 16 considered a cost-effective choice for industrial coatings despite its moderate weather resistance?
PIGMENT ORANGE 16 delivers high color strength and a reddish-orange hue at a lower cost than more durable pigments like PO13 or PO34, making it ideal for industrial coatings used in interior environments, such as machinery paints, tool coatings, and decorative finishes. Its resistance to acid and alkali (as per technical data) provides adequate protection in typical indoor industrial settings. While weather fastness and light fastness are moderate, this trade-off is acceptable for applications where cost efficiency and vibrant color are priorities over long-term outdoor durability.
How does the batch consistency protocol for PIGMENT ORANGE 16 at Honor Pigments ensure reproducible color strength in formulations?
Honor Pigments tests every batch of PO16 for color strength, shade accuracy, dispersibility, and particle size distribution against internal standards, with results documented under ISO 9001 procedures. This protocol ensures that the high color strength and reddish-yellow shade of HP ORANGE 3547 remain consistent across lots, critical for formulators blending with PY12 or other organic pigments. The specific density (g/cm³) and resistance values are also verified per batch, allowing precise dosage calculations in solvent-based inks and coatings without unexpected shade drift.