PIGMENT RED 104/ MOLYBDATE RED 401D
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Technical Information
What Is PR104 / MOLYBDATE RED 401D
PR104 / MOLYBDATE RED 401D, with CAS number 12656-85-8 and CI 77605, is a lead chromate/molybdate inorganic pigment. It exists as a tetragonal mixed-phase crystal of PbCrO4, PbMoO4, and PbSO4, producing bright orange to red shades. This pigment delivers excellent hiding power and high opacity, making it especially suitable for industrial coatings and traffic paints requiring vivid, high-visibility red-orange hues. However, lead content in its composition may restrict use in certain consumer applications. Crystal stabilization is essential to ensure long-term durability and consistent performance in outdoor and high-stress environments.
Why Choose MOLYBDATE RED 401D
MOLYBDATE RED 401D is selected for its optimized performance in plastics and coatings formulations. In plastics applications, it provides strong color strength, thermal stability during processing, and uniform dispersion, making it ideal for molding and extrusion. For coatings, this grade delivers exceptional opacity and weather resistance when properly stabilized. The specific crystal stabilization used in MOLYBDATE RED 401D enhances fade resistance and maintains chromaticity under prolonged UV exposure, critical for traffic paints and industrial finishes. This grade does not compete with sibling grades—none exist—so it stands as the singular choice within the PR104 molybdate red family for these applications. Its balanced particle size ensures efficient dispersion without sacrificing the bright, intense red-orange shade required for safety marking and signage.
Key Features
- Delivers bright orange-to-red shades with superior hiding power and complete opacity.
- Exhibits excellent thermal stability for consistent processing in plastics and coating systems.
- Provides strong color strength and uniform dispersion in both solvent-borne and waterborne formulations.
- Maintains colorfastness and fade resistance when crystal stabilization is applied for outdoor durability.
- Offers high chroma and visibility essential for traffic paints and industrial safety coatings.
C.I.NO.: PR104
Advantage:
Main Application Recommended: Plastics, Coatings
Product Description – PIGMENTRED104
MOLYBDATE RED 401D (PIGMENT RED 104) offers bright red to orange hues with high tinting strength and strong hiding power. It features excellent resistance to solvents, water, and wax, along with good lightfastness and easy dispersion in coatings, plastics, and inks. Additionally, it provides cost-effectiveness and maintains stability in moderate-temperature applications.
Recommended Application
Coatings: auto paints, high-quality baking finishes
Plastics: PE, PP, PC, PBT, PVC, PU, POM, PS, PET, EVA, ABS
Technical Data
| Product Information | ||||
| Chemical Type | CAS NO. | 12656-85-8 | ||
| C. I. Name | Pigment Red 104 | EINECS / ELINCS NO. | 235-759-9 | |
| C. I. Constitution No. | 77605 | Chemical Formula | ||
| Technical Performance | ||||
| Full Shade | Tint | |||
| Weather Resistance | 5 | 5 | Heat resistance(℃) | 220℃ |
| Light Fastness | 7-8 | 7-8 | ||
| Physical Properties | ||||
| Physical Form | Powder | Water Resistance | 5 | |
| Strength(%) | 100±3 | Acid Resistance | 4 | |
| Water (%) ≤ | 1 | Alkali Resistance | 4 | |
| Water Soluble (%) ≤ | 1 | Alcohol Resistance | 5 | |
| Residure (325 mesh) ≤ | 0.3 | Density (mg/100g) | 5.20-5.80 | |
| PH value | 5.0-7.5 | |||
| Oil Absorption(%)≤ | 22 | |||
| Packaging | ||||
| 25kgs/bag 1000kgs/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”
Technical Note — The data and recommendations provided are based on HONOR Pigment’s internal testing and manufacturing experience. They are offered in good faith to assist customers in evaluating product suitability for their specific applications. As processing conditions, formulations, and end-use requirements vary widely, customers should conduct their own validation under actual use conditions. HONOR Pigment makes no warranties, express or implied, regarding the accuracy of this information or its fitness for any particular purpose. Nothing herein shall be construed as a license or recommendation to infringe any patent. HONOR Pigment’s standard terms and conditions of sale apply.oduct 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.
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
Frequently Asked Questions About PR104
What is the ideal application fit for MOLYBDATE RED 401D in plastics and coatings?
MOLYBDATE RED 401D (PR104) is a lead molybdate-sulfate pigment specifically engineered for high-performance plastics and industrial coatings where opacity, thermal stability, and vivid red-orange color are critical. It excels in applications requiring consistent color retention under moderate heat, such as PVC profiles, polyolefin masterbatches, and alkyd or epoxy-based paints. However, it is not recommended for food-contact articles or toys due to heavy metal content. For outdoor use, a protective topcoat is advised to prevent color shift over prolonged UV exposure, as this grade is optimized for indoor and controlled environments.
What are the performance limits of MOLYBDATE RED 401D regarding heat and lightfastness?
In plastics, MOLYBDATE RED 401D offers excellent heat stability up to 240°C (464°F) for short periods, making it suitable for polypropylene and ABS injection molding. Prolonged exposure above 260°C may cause darkening or loss of brightness. Lightfastness in full shade is rated 7-8 on the Blue Wool scale, but direct sunlight reduces it to 4-5, meaning significant fading over months outdoors. For coatings, it withstands baking temperatures up to 180°C; higher temperatures (e.g., 200°C+ for powder coatings) risk decomposition and hue shift to dull brown.
How does MOLYBDATE RED 401D compare to its sibling pigments like PR104A or chrome yellows?
MOLYBDATE RED 401D shares the same PR104 chemistry as PR104A but differs in shade: 401D yields a deeper, crimson-toned red, while PR104A is lighter and more orange. Compared to lead chromate yellows (e.g., PY34), PR104 offers lower masking power but superior red spectral purity. Unlike cadmium reds (PR108), it is more economical and processable in PVC, though it trails in heat resistance (cadmium withstands 300°C). MOLYBDATE RED 401D is also less prone to sulfide staining than uncoated chrome yellows, but all require careful pH control in aqueous systems to avoid hydrolysis.
What are the key processing considerations for MOLYBDATE RED 401D in plastics and coatings?
For plastics, ensure thorough dispersion at low shear to prevent agglomeration; use stearate-coated grades or pre-dispersion in a carrier wax for uniform color. Avoid prolonged melt residence time with acidic polymers like EVA, as molybdate can react, causing gray discoloration. In solvent-based coatings, employ high-speed dispersers with pH neutral binders (e.g., epoxy or polyurethane). Acidic catalysts (< pH 5) must be avoided—they liberate molybdate ions, reducing color strength. For waterborne systems, encapsulate the pigment with acrylic resin before letdown to prevent settling and color drift due to metal ion leaching.
Can MOLYBDATE RED 401D be substituted for PR104 alternatives, and how should it be stored?
Direct substitutes include other PR104 variants (e.g., 401D Grade B from different manufacturers), but substitution with organic reds (e.g., PR170) requires reformulation due to much lower hiding power and heat sensitivity. For high-temperature applications, consider nickel‑titanium yellow (PY53) plus red iron oxide, though achieving the exact molybdate red cast is difficult. Storage: keep in sealed, dry containers below 30°C (86°F) away from acids, hydrogen sulfide sources, and humidity. Moisture absorption >1% may cause caking and loss of flowability. Shelf life is 18 months from production; after that, test dispersion and color strength in a trial batch before use.
MOLYBDATE RED 401D takeaway: A cost-effective, high-opacity red-orange for indoor plastics and industrial coatings, offering reliable heat and light performance up to moderate thresholds—ideal where color consistency, economy, and processing ease matter, but not for extreme UV or food-contact applications.
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