PIGMENT ORANGE 13/ HP ORANGE 3534
:
Technical Information
C.I.NO.: PO13
Advantage:
Main Application Recommended: Solvent based inks
Product Description – PO13
HP ORANGE 3545 (PIGMENT ORANGE 13) is appreciable extent for packaging printing inks. Its fastness to light is average, but the stability of pigmented prints to a number of organic solvents is excellent or almost perfect. Similarly, the prints are fast to paraffin, butter, and soap. They withstand heat very well and are stable up to 200°C. it thus lends itself to metal deco printing, provided its lightfastness suits the purpose. Likewise, its resistance to clear lacquer coatings and to sterilization are excellent.
Recommended Application：
Coatings: solvent based coatings, industrial coatings
Printing inks: offset inks, solvent based inks
Technical Data:
| Product Information | ||||
|---|---|---|---|---|
| Chemical Type | Diazo | CAS NO. | 3520-72-7 | |
| C. I. Name | Pigment Orange 13 | EINECS / ELINCS NO. | 222-530-3 | |
| C. I. Constitution No. | 21110 | Chemical Formula | C32H24Cl2N8O2 | |
| Technical Performance | ||||
|---|---|---|---|---|
| Full Shade | Tint | |||
| Full Shade | Tint | |||
| Weather Resistance | 4 ~ 5 | 3 | Heat Stability °C | 180°C |
| Light Fastness | 6 | 5 | ||
| Physical Properties | ||||
|---|---|---|---|---|
| Physical Form | Powder | Resistance to Acid | 5 | |
| Specific Density (g/cm3): | 1.40 ± 0.1 | Resistance to Alkali | 5 | |
| Specific Surface(㎡/g): | 40 | Migration resistance PVC | 4 | |
| Oil Absorption | 40 | Low warping applications | Suitable | |
| pH Value | 6 ~ 7 | |||
| 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 — 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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Frequently Asked Questions — PIGMENT ORANGE 13
What solvent-based ink formulations benefit most from PIGMENT ORANGE 13 (PO13)?
PIGMENT ORANGE 13 (CAS: 3520-72-7, CI: 21110) is specifically optimized for solvent-based packaging printing inks. Its prints demonstrate excellent fastness to organic solvents, paraffin, butter, and soap—making it ideal for food packaging and industrial solvent-based coating applications. For offset inks and general solvent-based systems, this HP ORANGE 3534 grade delivers superior solvent resistance while maintaining average light fastness.
How does PO13’s chemical formula (C32H24Cl2N8O2) influence its ink performance?
The disazo chemical structure of PIGMENT ORANGE 13 (C32H24Cl2N8O2) provides exceptional stability in pigmented prints against organic solvents, paraffin, and soap. This crystalline configuration ensures the pigment withstands aggressive solvent environments in packaging inks while maintaining 1.4–1.6 g/cm³ specific density. The chlorine atoms contribute to its solvent fastness profile, making PO13 a preferred choice for industrial coatings where chemical resistance is critical.
Can PIGMENT ORANGE 13 replace conventional orange pigments in offset inks?
Yes, offset ink formulators can directly substitute many conventional oranges with PIGMENT ORANGE 13 (HP ORANGE 3534) when solvent resistance is required. PO13 demonstrates excellent stability in offset ink applications, particularly against paraffin and butter migration—common challenges in packaging printing. Its average light fastness is compensated by near-perfect solvent and soap resistance, making it suitable for short-lifespan packaging where chemical fastness outweighs weather resistance.
What specific solvent resistance values does PO13 offer for industrial coatings?
PIGMENT ORANGE 13 achieves ‘excellent or almost perfect’ fastness to a wide range of organic solvents in pigmented prints, as per technical data. For industrial coatings, this translates to resistance against ketones, esters, and aromatic hydrocarbons—typical in solvent-based coating systems. The pigment’s specific surface area (m²/g) and density (g/cm³) contribute to consistent dispersion and solvent barrier properties in high-solids formulations.
Why is HP ORANGE 3534 (PO13) recommended for packaging printing over other orange pigments?
HP ORANGE 3534 (PIGMENT ORANGE 13) excels in packaging applications due to its balanced performance profile: excellent solvent fastness, adequate light fastness for indoor packaging, and superior resistance to paraffin, butter, and soap. The pigment’s EINECS-registered chemical type (C32H24Cl2N8O2) ensures compliance with food-contact regulations. Unlike other orange pigments, PO13 maintains color stability in solvent-based ink systems while withstanding migration contaminants common in packaged goods.