Pigment Red 81

Brand	Fineland Chem
Color Index	Pigment Red 81
Color Index No	45160
CAS No	12224-98-5
EC No	235-424-7
Chemical Group	Xanthene
Chemical Formula	C₁₁₂H₁₂₆MoN₈O₂₃PW

What is Pigment Red 81

Pigment Red 81 (C.I. 45160) is an organic pigment belonging to the xanthene pigment family, commonly associated with rhodamine-type pigments. It typically produces a bright bluish-red to pinkish-red shade and is known for its vivid coloration in certain industrial and specialty applications.

The pigment is derived from rhodamine dye chemistry and converted into an insoluble pigment form for use in coloration systems. Due to its bright tone and distinctive color characteristics, Pigment Red 81 has historically been used in coatings, printing inks, plastics, and other applications where bright red or pink shades are required.

Pigment Red 81 belongs to a group of pigments that provide strong chroma and distinctive shades, although their performance characteristics can vary depending on formulation and processing conditions.

Product Technical Data and Typical Performance Values

PR81 – DuraPrint® 6581 ⬇️TDS
low viscosity and good color strength, designed as a general-purpose grade for solvent-based printing inks.

Physical Properties

Test Item	Specification
Density (g/cm3 )	1.55-1.85
Specific Surface Area(m2/g)	25-60
Oil Absorption(g/100g)	40-50
PH Value	6-9
Bulk Density (lb/gal)	10.4-12.5
Total impurities(ppm)	≤600

Fastness Properties

Heat Resistance (℃)	160	Alkali Resistance (1-5)	4
Light Resistance (Full Shade, 1-8)	5-6	Migration Resistance(1-5)	3-4
Light (Reduced tinting, 1-8)	5	Ethyl Acetate (1-5)	3
Weather Resistance (1-5)	3	Ethanol (1-5)	3
Acid Resistance (1-5)	4	MEK (1-5)	3

Typical Applications

Pigment Red 81 is used in several industrial and specialty coloration systems.

Typical applications include:

Printing inks
Used in certain packaging inks and publication inks requiring bright red or pink shades.
Industrial coatings
Applied in decorative coatings and specialty paint formulations.
Plastic coloration
Used in selected plastic materials where vivid red coloration is desired.
Rubber and specialty materials
Applied in rubber compounds and other industrial materials requiring bright coloration.

Key Performance Properties Related to Applications

The application behavior of Pigment Red 81 is influenced by its xanthene-based pigment chemistry.

Key properties include:

Color shade
Bright bluish-red to pinkish-red tone with high chroma.
Tinting strength
Moderate to relatively strong tinting strength in formulations designed for vivid coloration.
Dispersion characteristics
Can be incorporated into coatings, inks, and plastics using conventional dispersion methods.
Color brightness
Known for producing vivid and intense color shades.
Compatibility
Generally compatible with a variety of binder systems depending on formulation.

Advantages

Excellent color performance: Features a pure and bright bluish red color, accurately matching the magenta hue for four-color overprinting inks. It has high tinting strength, delivering vivid and intense coloration with minimal addition. Additionally, it exhibits good stability in non-polar solvents such as aromatic hydrocarbons and paraffins, making it suitable for core application scenarios.
Flexible specification options: Offers two grades—toner and lake—to meet diverse production needs with strong adaptability.
Strict quality control: Adopts a rigorous quality management system, implementing precise control and inspection throughout the entire process from raw material selection to production. Each batch of products undergoes multiple process tests to ensure stable and reliable quality.
Strong production capacity: Equipped with advanced production facilities and a professional technical team, capable of supporting large-scale production and customization requirements. Continuously invests in technological improvement and equipment upgrading to guarantee excellent product performance and stable supply.
Reliable compliance: Fully complies with international and regional environmental, safety and quality standards such as REACH and RoHS, providing strong support for customers’ production safety and compliant operations.

Typical Limitations

Pigment Red 81 may have certain limitations depending on the durability requirements of the final application.

Typical limitations include:

Moderate to limited lightfastness in some outdoor environments
Limited heat resistance compared with high-performance pigments
Possible sensitivity to certain solvents or processing conditions
Not typically selected for applications requiring long-term weather durability

Buyer Guidance

When evaluating Pigment Red 81 for industrial formulations, several technical considerations are commonly reviewed:

Required color shade and brightness
Processing temperature of plastics or coatings
Lightfastness requirements for indoor or outdoor applications
Compatibility with binder or resin systems

Applications requiring improved durability or higher resistance properties may consider alternative pigment types.

Synonyms

Fast Rose 40	Fast Rose 44	Toner Pink G	Rhodamine Red
FANALPINKGSUPRA	FANALPINKBSUPRA	Fast Pink Toner	Fanatone Rose G
Rhodamine Y PTA	Rhodamine Y PTMA	Sunset I(B21-2604)	Tungstate Rose RT 384
PIGMENT RED 81	C.I. pigment red 81	Foscolor PTMA Red 81	Magenta Solfort 5G
Permanent Cerise Toner	Pigment red 81 (C.I. 45160:1)	Symulex Rhodamine Y Toner F	Fanal Pink lake 6gD&C Red No 19
Kromacryl Magnet CuFe	Xanthylium, 9-2-(ethoxycarbonyl)phenyl-3,6-bis(ethylamino)-2,7-dimethyl-, molybdatetungstatephosphate	Xanthylium, 9-[2-(ethoxycarbonyl)phenyl]-3,6-bis(ethylamino)-2,7-dimethyl-, molybdatetungstatephosphate
9-[2-(Ethoxycarbonyl)phenyl]-3,6-bis(ethylamino)-2,7-dimethylxanthylium molybdatetungstatephosphate

Manufacturer and Supplier Information

Pigment Red 81 is produced by pigment manufacturers worldwide and is supplied mainly in powder form for use in coatings, printing inks, plastics, rubber, and other industrial coloration applications.

Commercial grades may vary in particle size distribution, surface treatment, and dispersion characteristics depending on the intended formulation.

Package and Delivery

● 25KG Kraft Bag, 400kg/500kg Carton Box

● Lead Time: Normally around 15 days after signed contract.

FAQ

1.What color shade does Pigment Red 81 produce?
Pigment Red 81 typically provides a bright bluish-red to pinkish-red shade.

2.What pigment family does Pigment Red 81 belong to?
Pigment Red 81 belongs to the xanthene pigment family, related to rhodamine-based pigment chemistry.

3.Can Pigment Red 81 be used in printing inks?
Yes. It has been used in certain printing ink formulations requiring bright red shades.

4.Is Pigment Red 81 suitable for outdoor applications?
It may be used in certain applications, but pigments with higher lightfastness are often selected for long-term outdoor exposure.