Pigment Red 264
[CAS# 88949-33-1]

Identification

• Classification: Dyes and pigments >> Pigment
• Name: Pigment Red 264
• Synonyms: 3,6-Bis([1,1'-biphenyl]-4-yl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione
• Molecular Formula: C₃₀H₂₀N₂O₂
• Molecular Weight: 440.49
• CAS Registry Number: 88949-33-1
• EC Number: 682-309-6
• SMILES: C1=CC=C(C=C1)C2=CC=C(C=C2)C3=C4C(=C(N3)O)C(=NC4=O)C5=CC=C(C=C5)C6=CC=CC=C6

Properties

• Density: 1.4±0.1 g/cm³, Calc.^*
• Index of Refraction: 1.746, Calc.^*
• Boiling Point: 767.1±60.0 ºC (760 mmHg), Calc.^*
• Flash Point: 250.5±33.0 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software.

Safety Data

• Hazard Symbols: GHS07 Warning
• Hazard Statements: H302-H315-H319
• Precautionary Statements: P501-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330

Discovory and Applicatios

Pigment Red 264 is an organic red pigment primarily used in the coloring of plastics, paints, inks, and coatings. It belongs to the class of azo pigments, which are known for their vivid and intense color properties. The chemical structure of Pigment Red 264 consists of an azo linkage, a characteristic feature of many synthetic organic pigments. Azo pigments are widely used in industry due to their ability to provide a broad range of colors, excellent stability, and good performance in various applications.

The discovery of Pigment Red 264 can be traced back to the continuous development of azo compounds in the mid-20th century. Azo pigments were developed as alternatives to natural colorants, which often suffered from limited color range and poor stability. As the demand for synthetic pigments increased, especially for applications in automotive and industrial coatings, the development of new azo pigments like Pigment Red 264 became essential. This pigment, known for its bright red color, was synthesized through a controlled chemical reaction involving diazonium salts, which are common intermediates in the production of azo compounds.

One of the key applications of Pigment Red 264 is in the automotive industry, where it is used for coloring automotive coatings and paints. The pigment is prized for its high tinting strength, which means it can be used in smaller quantities to achieve a strong color, and its excellent lightfastness, which ensures that the color remains stable and vibrant under exposure to sunlight. These properties make Pigment Red 264 suitable for use in exterior applications, including automotive finishes, where long-term durability is important.

In addition to its use in automotive coatings, Pigment Red 264 is also commonly used in the production of inks, particularly in printing applications. It is included in the formulation of various types of inks, such as those used in offset printing and gravure printing. The pigment's strong color properties and stability make it an ideal choice for use in high-quality printing, where color reproduction is crucial.

Another application of Pigment Red 264 is in the coloring of plastics. It is used in the production of colored plastic products, including household goods, packaging materials, and toys. The pigment's high dispersibility ensures that it can be evenly distributed throughout the plastic material, providing a uniform color and excellent color retention over time. Pigment Red 264 is also used in the formulation of masterbatches, which are concentrated mixtures of pigments that can be added to plastics during processing.

The pigment's chemical structure, which contains an azo group, also imparts certain properties such as resistance to chemicals and heat. This makes it suitable for use in coatings and paints that need to withstand harsh environments, including exposure to solvents, acids, and temperature extremes. As a result, Pigment Red 264 is also employed in industrial coatings for machinery, equipment, and metal surfaces, where it provides both aesthetic appeal and protective qualities.

Research on Pigment Red 264 has focused on improving its environmental impact, particularly with regard to its synthesis and disposal. While the pigment is generally considered stable and non-toxic in its final form, concerns about the environmental impact of azo compounds and their potential for releasing harmful byproducts during manufacturing or disposal have led to efforts to develop more sustainable production methods. As part of these efforts, researchers have explored alternative synthesis routes that reduce the use of hazardous chemicals and improve the overall sustainability of the pigment.

In summary, Pigment Red 264 is a synthetic azo pigment widely used in various industries, including automotive coatings, printing inks, and plastics. Its discovery and development have contributed to the vast array of synthetic colorants available today, with applications that require strong color intensity, durability, and lightfastness. Despite its widespread use, ongoing research continues to focus on improving its environmental footprint, ensuring that its production and disposal processes align with modern sustainability standards.