Pigment Red 21

Pigment Red 21

Pigment Red 21

Pigment Red 21 (C.I. 12315) là sắc tố azo hữu cơ thuộc lớp sắc tố β-naphthol. Nó cho sắc đỏ hơi vàng và đã được sử dụng trong các ứng dụng tạo màu truyền thống như sơn phủ, mực in và một số hệ nhựa.

Các grade bán chạy nhất

• PR21 – DuraPaint®6521-1 ⬇️TDS Được khuyến nghị cho sơn công nghiệp, sơn trang trí gốc nước/gốc dung môi. ⬇ TDS (PDF)

Tính bền màu

Ứng dụng điển hình

Pigment Red 21 is applied in a range of industrial coloration systems where conventional organic pigments are suitable.

Typical applications include:

• Industrial coatings
  Used in general industrial paints and decorative coatings.

• Printing inks
  Applied in packaging inks, publication inks, and other conventional ink formulations.

• Plastic coloration
  Suitable for some general-purpose plastics processed at moderate temperatures.

• Rubber and textile printing
  Used in rubber coloration and pigment printing formulations.

Các đặc tính hiệu suất chính liên quan đến ứng dụng

The performance of Pigment Red 21 in various applications is influenced by its pigment chemistry and particle characteristics.

Key properties include:

• Color shade
  Yellowish-red tone with moderate chroma.

• Tinting strength
  Moderate color strength suitable for general coloration systems.

• Dispersion properties
  Can be dispersed in many coating, ink, and plastic formulations using conventional dispersion techniques.

• Heat resistance
  Moderate thermal stability typical of β-naphthol azo pigments.

• Solvent resistance
  Generally compatible with solvents commonly used in coatings and printing inks.

Ưu điểm

1.Product Characteristics & Hue Performance

As a monoazo organic pigment, it has clear key identifiers (C.I. 12300; CAS 6410-26-0, chemical formula C₂₃H₁₆ClN₃O₂), featuring a vivid yellowish-red shade and strong tinting strength to provide bright visual effects. It is currently mass-produced in China, with commercial names including “Dahongfen” (Bright Red Powder) and “Tongyi Jinguanghong” (Unified Golden Bright Red), ensuring stable supply.

2.Performance Stability

It has good dispersibility and high opacity, showing stable performance in various formulation systems. With moderate lightfastness (typically rated around Grade 6) and heat resistance up to 140°C, it can meet the usage needs of most indoor and general-purpose scenarios, with strong adaptability.

3.Cost & Applicability Advantages

It has a significant cost advantage. It becomes a preferred choice in indoor coloring, basic industry and cultural & educational fields due to its high cost-effectiveness and bright hue, with wide applicability and prominent economy.

4.Wide Application Range

It covers the usage needs of multiple fields, including industrial coatings (red enamel paint, latex paint), printing & pigments (water-based/offset inks, watercolor/oil paints, stationery) and textile printing & dyeing. It has flexible scenario adaptation and does not require additional adaptation to a variety of special processes.

Hạn chế thường gặp

Pigment Red 21 may present certain limitations depending on the durability requirements of the final application.

Typical limitations include:

• Moderate lightfastness, especially under outdoor exposure

• Limited heat resistance compared with high-performance pigments

• Possible bleeding or migration in some plastic systems

• Not typically used in applications requiring long-term weather durability

Hướng dẫn mua hàng

When selecting Pigment Red 21 for industrial formulations, several technical factors are often considered:

• Processing temperature of plastics or coatings

• Lightfastness requirements for indoor or outdoor applications

• Compatibility with binder or resin systems

• Dispersion performance in the final formulation

For applications requiring higher durability, weather resistance, or heat stability, alternative pigment classes may also be evaluated.

Tên gọi khác

Thông tin nhà sản xuất và nhà cung cấp

Pigment Red 21 is manufactured by pigment producers worldwide and is typically supplied in powder form for use in coatings, inks, plastics, rubber, and related industrial applications.

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

Đóng gói và giao hàng

●   25KG Kraft bag, 400KG Carton Box.

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

Câu hỏi thường gặp

1.What color shade does Pigment Red 21 provide?
Pigment Red 21 generally produces a yellowish-red shade.

2.Is Pigment Red 21 an organic pigment?
Yes. It belongs to the organic azo pigment family, specifically the β-naphthol pigment group.

3.Can Pigment Red 21 be used in printing inks?
Yes. It has been used in various conventional printing ink formulations.

4.Is Pigment Red 21 suitable for high-temperature plastics?
It is typically used in plastics with moderate processing temperatures; higher-temperature polymers may require pigments with greater heat stability.