For dye chemists and formulators, selecting the right chemical intermediates is critical for achieving desired color properties, fastness, and application performance. 1,4-Dihydroxyanthraquinone, commonly known as Quinizarin or Solvent Orange 86, is a foundational intermediate with a rich history in color chemistry. This article provides a technical overview for professionals looking to buy and effectively utilize this compound in advanced dye formulations, focusing on its chemical structure, properties, and integration strategies.

The chemical structure of 1,4-Dihydroxyanthraquinone is an anthraquinone core with two hydroxyl groups positioned at the 1 and 4 positions. This specific arrangement of hydroxyl groups significantly influences its reactivity and spectroscopic properties, making it an excellent chromophore precursor. The compound's molecular formula is C14H8O4, with a molecular weight of 240.21 g/mol. As an orange to deep orange crystalline powder, its physical state and purity are crucial for consistent results. When purchasing, a high assay (≥99%) and low moisture content are desirable to ensure predictable reaction pathways and minimize potential interference in sensitive dye syntheses.

Quinizarin's versatility as a dye intermediate lies in its ability to undergo various chemical transformations. The hydroxyl groups can be readily functionalized or replaced. For example, amination reactions, where one hydroxyl group is replaced by an amino group derived from aniline derivatives, lead to the formation of intermediates for dyes like Acid Violet 43. Furthermore, sulfonation of 1,4-Dihydroxyanthraquinone yields 1,4-dihydroxyanthraquinone-2-sulfonic acid, opening pathways to water-soluble dyes. When you buy this intermediate, understanding these potential downstream reactions can help in planning your formulation strategies.

In the context of specific dye types, 1,4-Dihydroxyanthraquinone is indispensable for producing high-performance textile dyes. It is a key precursor for numerous disperse dyes, which are widely used for coloring synthetic fibers like polyester. Its derivatives also form the basis for VAT dyes, known for their exceptional durability and wash fastness, and reactive dyes, which chemically bond with fibers for vibrant, long-lasting colors. Manufacturers aiming to buy these types of dyes or their intermediates should prioritize sourcing Quinizarin from reliable suppliers to ensure batch-to-batch consistency.

Beyond textile applications, its use in industrial coloring, such as for plastics and oils, highlights its stability and excellent light fastness. When integrating 1,4-Dihydroxyanthraquinone into formulations for plastics or resins, formulators need to consider its compatibility with the polymer matrix and processing temperatures. The ability to buy this compound at a competitive price from a quality manufacturer in China provides an excellent opportunity to optimize formulation costs without compromising performance.

In summary, a thorough understanding of 1,4-Dihydroxyanthraquinone's chemical structure and reactivity is essential for its effective use in dye formulation. By prioritizing purity, consistency, and working with knowledgeable suppliers who can provide technical data, dye chemists can leverage this versatile intermediate to create innovative and high-performance color solutions. If your R&D or production requires this compound, explore options from trusted manufacturers to ensure the success of your formulations.