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Special Use

Pigment Yellow 34 / Chrome Yellow

Brand	Fineland Chem
Color Index	Pigment Yellow 34 (Chrome Yellow)
Color Index No	77603
CAS No	1344 – 37 – 2
EC No	215- 693 – 7
Chemical Group	Chrome series
Chemical Formula	PbCrO₄ + PbSO₄

What is Chrome Yellow?

Chrome Yellow, also known as Pigment Yellow 34 (PY34), is an inorganic lead chromate pigment traditionally used for its bright yellow to orange-yellow shade and excellent opacity.
It has been widely applied in industrial coatings, traffic paints, road marking materials, and corrosion-protective coatings, where high hiding power and visual impact are required.

Pigment Yellow 34 is characterized by its high tinting strength, strong covering ability, and good resistance to light, making it suitable for applications demanding vivid color visibility.
Due to its inorganic nature, Chrome Yellow exhibits good heat resistance compared to many organic yellow pigments.

However, as a lead-containing pigment, Chrome Yellow (PY34) is subject to regulatory restrictions in many regions, and its use is typically limited to industrial and controlled applications where compliance requirements can be met.

PY34 Main Grades for Related Applications

PY34 – DuraPaint®6134L ⬇️TDS

It‘s the Lemon chrome yellow, it excels in paint and coating applications with its high opacity, vibrant yellow hue, ensuring durable colorfastness in both indoor/outdoor coatings and compatibility with various binders for long-lasting performance.

PY34 – DuraPaint®6134M ⬇️TDS

It’s the Middle Chrome Yellow, it excels in paint and coating applications with its high opacity, vibrant yellow hue, ensuring durable colorfastness in both indoor/outdoor coatings and compatibility with various binders for long-lasting performance.

PY34 – DuraPlast®C3134M ⬇️TDS

This grade offers a distinct advantage in plastic applications with its ability to withstand 220°C, ensuring no color degradation or thermal breakdown during extrusion, injection molding, or thermoforming processes while maintaining vibrant yellow hue and pigment stability in polyolefins, PVC, and other thermoplastics.

PY34 – DuraPaint®C6134M ⬇️TDS

This is a middle yellow pigment with a red undertone for water-based coatings and road marking, featuring encapsulated surface treatment and stable performance in coating applications.

PY34 – DuraPaint®C6134D ⬇️TDS

This is a Deep Chrome Yellow pigment for paint and road marking, offering consistent color appearance and stable processing performance in common plastic applications.

Physical Properties

Test Item	Specification
Density (g/cm3 )	6.2
Specific Surface Area(m2/g)	4
Oil Absorption(g/100g)	16-20
PH Value	6-8
Bulk Density (lb/gal)	110
Total impurities(ppm)	≤600

Fastness Properties

Heat Resistance (℃)	180	Alkali Resistance (1-5)	3
Light Resistance (Full Shade, 1-8)	4-5	Migration Resistance(1-5)	3
Light (Reduced tinting, 1-8)	4	Ethyl Acetate (1-5)	3
Weather Resistance (1-5)	3	Ethanol (1-5)	3
Acid Resistance (1-5)	3	MEK (1-5)	3

Typical Applications of Chrome Yellow (Pigment Yellow 34)

Chrome Yellow, also known as Pigment Yellow 34 (PY34), is mainly used in industrial coatings, traffic paints, road marking materials, and corrosion-protective coatings, where high opacity and strong visual visibility are required.
It is commonly applied in anti-corrosive paints, marine coatings, and heavy-duty industrial coatings, especially in applications requiring strong covering power.
Chrome Yellow has also been widely used in road marking and safety coatings, where bright color and excellent hiding power are essential for visibility.

Key Performance Properties Related to Applications

Pigment Yellow 34 offers excellent opacity and high tinting strength, making it suitable for applications where strong covering ability is critical.
Its inorganic pigment structure provides good heat resistance and lightfastness, supporting stable performance in industrial coating systems.
Chrome Yellow demonstrates good chemical resistance in protective coatings, contributing to long-term color stability in demanding environments.

Advantages of Chrome Yellow (PY34)

1. Excellent Opacity and Hiding Power
Chrome Yellow exhibits outstanding opacity, allowing efficient coverage even at lower pigment loadings. This property makes it highly suitable for industrial coatings and road marking applications where surface coverage is critical.

2. Good Heat Resistance and Lightfastness
As an inorganic pigment, Pigment Yellow 34 shows good heat resistance and lightfastness, ensuring stable color performance in industrial processing and outdoor exposure conditions.

Typical Limitations of Chrome Yellow

1. Regulatory Restrictions Due to Lead Content
Pigment Yellow 34 is a lead-containing pigment, and its use is subject to strict regulatory control in many regions. It is generally limited to industrial and controlled applications where compliance requirements can be met.

2. Limited Use in Consumer and Eco-Sensitive Applications
Due to environmental and health considerations, Chrome Yellow is not suitable for consumer products, food packaging, or environmentally sensitive applications, where lead-free alternatives are required.

Buyer Guidance: What to Confirm When Sourcing Chrome Yellow

When sourcing Chrome Yellow (Pigment Yellow 34), buyers should clearly specify the intended industrial application, such as corrosion-protective coatings or road marking paints.
It is important to confirm regulatory compliance requirements, including regional restrictions related to lead-containing pigments.
Buyers should also clarify performance expectations, such as opacity, heat resistance, and lightfastness, to ensure suitability for the target application.
Clear communication of application conditions helps pigment manufacturers recommend the appropriate grade and ensures regulatory alignment.

Advantages

1. Intense Color Strength & Opacity

Delivers a vivid yellow hue with high chroma and covering power, ideal for applications requiring bold color visibility in coatings, plastics, and ceramics.
Its crystalline structure provides excellent opacity, reducing the need for higher pigment loading to achieve desired color density.

2. Exceptional Heat Stability

Withstands temperatures up to 600°C without color degradation, making it suitable for high-temperature applications like ceramic glazes, enamels, and powder coatings cured at elevated temperatures.

3. Good Lightfastness & Weather Resistance

Exhibits strong lightfastness (up to 7–8 on the Blue Wool Scale) and weather resistance, maintaining color stability in outdoor applications such as architectural paints, road markings, and automotive trims.

4. Chemical Resistance

Resists most acids and alkalis, suitable for use in industrial coatings exposed to mild chemical environments (e.g., machinery, equipment).
Unaffected by common solvents, ensuring color integrity in solvent-based systems.

5. Cost-Effective Performance

Offers a balance of color quality and durability at a lower cost compared to high-performance organic pigments, making it economical for large-scale applications like construction materials and general-purpose paints.

6. Compatibility with Diverse Substrates

Compatible with various binders (oil-based, water-based, epoxy) and materials (plastics, metals, ceramics), providing formulation flexibility for manufacturers.

7. Established Industry Use & Standardization

Widely used in traditional industries (e.g., automotive coatings, printing inks) with well-defined processing parameters, reducing technical adoption barriers.

Synonyms

Chrome Yellow	Middle Chrome	Primrose Chrome Yellow	Chrome Yellow BN / D / GN / R
Diacromo Yellow BN

Chrome Yellow Manufacturer and Supplier Information

Fineland Chem is a B2B manufacturer and exporter of inorganic pigments, supplying Chrome Yellow (Pigment Yellow 34 / PY34) for industrial coating, traffic paint, and corrosion-protection applications.

Chrome Yellow is produced under controlled manufacturing and quality inspection processes to ensure consistent color shade, particle distribution, and application stability. Each batch is evaluated to meet typical industrial requirements for opacity, tinting strength, and dispersion performance.

With long-term experience in international pigment supply, Fineland Chem supports global customers with application-oriented product selection, technical communication, and stable export logistics for Chrome Yellow pigments used in traditional industrial systems.

FAQ

1. Is Chrome Yellow (Pigment Yellow 34) suitable for outdoor applications?

Chrome Yellow offers excellent opacity and brightness, making it suitable for outdoor applications such as industrial coatings and traffic paints. However, its long-term weather resistance is moderate, and performance depends on formulation and exposure conditions.

2. Can Pigment Yellow 34 be used in plastics?

Pigment Yellow 34 can be used in certain plastic applications with low to moderate processing temperatures. It is not recommended for high-temperature engineering plastics due to thermal stability limitations.

3. Is Chrome Yellow compatible with water-based systems?

Chrome Yellow is mainly used in solvent-based coatings and traditional industrial systems. In water-based formulations, dispersion and stability must be carefully evaluated during formulation development.

4. What are the typical applications of Chrome Yellow?

Chrome Yellow is commonly used in:

Industrial and protective coatings
Traffic paints and road marking systems
Anti-corrosion primers
Machinery and equipment coatings

5. Are there alternatives to Pigment Yellow 34?

For applications requiring higher weather resistance, environmental compliance, or lead-free solutions, alternatives may include organic yellow pigments or lead-free inorganic yellow pigments, depending on regulatory and performance requirements.