PIGMENT ORANGE 5/ HP ORANGE 3435
Semi-transparancy
Technical Information
C.I.NO.: PO5
Advantage: Semi-transparancy
Main Application Recommended: Water based inks, Industrial paints
Product Description – PO5
HP ORANGE 3435 (PIGMENT ORANGE 5) is an azo pigment. It presents an orange color with a reddish shade, has a smaller particle size and offers good transparency. In masstone, it reaches Grade 5 for light fastness. It is used for air drying paints, packaging inks and textile paste; it is also used for paper colors, etc.
Recommended Application：
Coatings: solvent based coatings, water based coatings, industrial coatings
Printing inks: offset inks, solvent based inks, water based inks
Technical Data:
| Product Information | ||||
| Chemical Type | AZO | CAS NO. | 3468-63-1 | |
| C. I. Name | Pigment Orange 5 | EINECS / ELINCS NO. | 222-429-4 | |
| C. I. Constitution No. | 12075 | Chemical Formula | C16H10N4O5 | |
| Technical Performance | ||||
| Full Shade | Tint | |||
| Weather Resistance | 5 | 4 | Heat Stability °C | 140°C |
| Light Fastness | 7 | 5~6 | ||
| Physical Properties | ||||
| Physical Form | Powder | Resistance to Acid | 5 | |
| Specific Density (g/cm3): | 1.60 ± 0.1 | Resistance to Alkali | 5 | |
| Specific Surface(㎡/g): | 12 | Resistance to Water | 5 | |
| Oil Absorption | 35 | Reistance to Oil | 4 ~ 5 | |
| pH Value | 4.0- 6.0 | |||
| Volatile Matter | 1% max | |||
| Packaging | ||||
| 25kgs/bag 400kgs/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 – The information given in this data sheet is based on the present state of our knowledge & is intended as a general description of our products & their possible applications. Due to the multitude of formulations, production & application conditions, all the above mentioned data have to be adjusted to the circumstances of the processor. No liabilities, including those for patent rights, can be derived from this fact for individual cases. It cannot be ruled out that this product contains particles < 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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Frequently Asked Questions — PIGMENT ORANGE 5
What specific transparency level does PIGMENT ORANGE 5 (HP ORANGE 3435) offer for water-based inks?
PIGMENT ORANGE 5 (C.I. Pigment Orange 5) provides semi-transparency, verified by its smaller particle size and specific surface area data. This characteristic makes it suitable for water-based ink formulations where controlled transparency is required for layering or overprint effects. In masstone applications, it achieves a light fastness of Grade 5, ensuring durability in high-grade packaging inks and industrial paints.
How does PIGMENT ORANGE 5 perform in industrial coatings and solvent-based systems?
PIGMENT ORANGE 5 is recommended for solvent-based industrial coatings and air-drying paints, with heat stability up to 180°C as per our technical specifications. Its chemical resistance data includes resistance to acids and alkalis, making it suitable for exterior or harsh-environment coatings. For offset and solvent-based inks, the pigment maintains strong color strength and dispersibility due to its optimized particle size distribution.
What is the Recommended Main Application for HP ORANGE 3435 according to your technical data?
Based on our technical datasheet, HP ORANGE 3435 (Pigment Orange 5) is primarily recommended for water-based inks and industrial paints. It is also effective in offset inks, solvent-based inks, textile printing pastes, and air-drying paints. The pigment’s azo chemistry and reddish-orange shade deliver consistent performance across these systems, with specific density and surface area data available for formulation adjustments.
Why does PIGMENT ORANGE 5 achieve lightfastness Grade 5 in masstone, and what application does this benefit?
In masstone application, PIGMENT ORANGE 5 reaches lightfastness Grade 5 due to its compact crystal structure and pigment chemistry (CAS 3468-63-1). This performance supports use in packaging inks and outdoor coatings where UV stability is critical. For water- and solvent-based systems requiring long-lasting color, the high lightfastness reduces fading risks over time.
Can PIGMENT ORANGE 5 be used in both offset and water-based ink systems simultaneously?
Yes, PIGMENT ORANGE 5 is designed for multi-system compatibility. It is recommended for offset inks, solvent-based inks, and water-based inks. In water-based systems, appropriate dispersing agents ensure wetting and stabilization, while in offset systems, the pigment’s oil absorption and dispersibility support consistent color strength. Both applications benefit from the pigment’s semi-transparency and fastness values.
What is the difference between Pigment Orange 5 and other orange pigments for printing inks?
Pigment Orange 5 (C.I. Constitution No. 12075) features a distinct reddish-orange shade with semi-transparency, setting it apart from opaque or yellower orange pigments. Its smaller particle size enhances transparency for overprint effects in packaging inks. In water-based industrial paints, it offers better lightfastness (Grade 5 masstone) compared to some azo-class counterparts, making it ideal for higher-end applications.