Indigo Blue is a historically significant dye, renowned for its deep blue color and exceptional fastness properties, especially when applied to cellulosic fibers like cotton. It is perhaps most famously associated with the coloration of denim, giving jeans their iconic blue hue and characteristic fading patterns. The purity of Indigo Blue is crucial for achieving consistent and reliable dyeing results in large-scale textile manufacturing processes.

NINGBO INNO PHARMCHEM CO.,LTD. offers a high-quality grade, Indigo Blue 94% min, specifically designed for the demanding requirements of the textile industry. This product is available in powder or granular form, appearing as a dark blue solid. Its chemical identity is well-defined by its CAS number 482-89-3, chemical formula C16H10N2O2, and EINECS number 207-586-9. These identifiers confirm its specific molecular structure and regulatory registration status, assuring customers of a precisely defined chemical substance.

The performance of Indigo Blue 94% is underpinned by its specific physical and chemical properties. It is noteworthy for its insolubility in water and alcohol, a characteristic fundamental to its application as a vat dye. Vat dyes are applied to fabric in a water-soluble, reduced (leuco) form, which penetrates the fibers. Subsequently, oxidation converts the dye back to its insoluble, colored form, trapping it within the fiber structure. This process is what imparts the exceptional wash and light fastness properties that are a hallmark of indigo-dyed textiles, making it ideal for durable goods like denim.

While insoluble in common solvents like water and alcohol, Indigo Blue 94% is soluble in hot Aniline, illustrating the specific chemical conditions required for its manipulation in industrial settings. The product typically exhibits a pH range between 9.5 and 10.5, which is relevant for the vat dyeing process, often conducted under alkaline conditions. High purity is indicated by the low moisture content, typically 1% maximum, and a low content of ferric ions, specified at ≤200ppm. Impurities like excess moisture or metal ions can negatively impact the dyeing process and final color quality, so stringent control over these parameters is essential for a premium product like Indigo Blue 94%.

Physical characteristics further define this material. It boasts a high melting point of approximately 400.4 °C at 760 mmHg, indicating thermal stability under standard conditions. Its density is about 1.417g/cm³. The steam pressure at 25°C is very low, around 1.27e-06mmHg, suggesting low volatility under ambient temperatures, contributing to stable storage.

The applications of Indigo Blue 94% are diverse within the textile sector. Its primary use is for dyeing cotton fiber, forming the foundation of the global denim industry. However, its utility extends beyond denim to include dyeing cambric, viscose, vinylon, and certain polyester blends. It can also be employed for direct printing on cotton fiber, offering different aesthetic possibilities compared to full immersion dyeing. Furthermore, high-purity Indigo Blue can serve as a precursor for the production of other organic pigments, expanding its industrial relevance beyond direct textile application.

Packaging is typically in 25 Kgs net bags, drums, or cartons, designed for safe handling and transport. A standard 20-foot container can load approximately 11 metric tons of this material, providing efficiency in global logistics. Proper storage in a dry place is recommended to maintain product integrity and prevent degradation.

The choice of Indigo Blue 94% ensures consistency in color yield and shade reproducibility, critical factors for textile manufacturers aiming for uniform product quality across batches. Its inherent fastness properties mean the color remains vibrant and resistant to fading from washing and sunlight, meeting consumer expectations for durable goods. NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing this essential chemical raw material, adhering to quality standards to support the diverse needs of the global textile dyeing and printing industries. Understanding the technical specifications and applications allows textile manufacturers to optimize their processes and achieve superior results using this classic and indispensable dye.

For those seeking a trusted manufacturer and supplier of high-quality Indigo Blue 94%, NINGBO INNO PHARMCHEM CO.,LTD. stands ready. Understanding the price and facilitating the buy or purchase of this essential chemical are key steps in securing a reliable supply chain for textile production. We encourage interested parties to inquire about our product availability and technical support.