Description

C.I. Reactive Blue 79 is a high-performance, water-soluble reactive dye belonging to the phthalocyanine class, known for its brilliant blue hue and excellent fastness properties. Its primary value lies in its ability to form a covalent bond with cellulosic fibers like cotton and viscose, ensuring outstanding wash and light fastness in textile dyeing and printing applications. This product is essential for manufacturers in the textile industry, particularly for producing vibrant, durable blue shades on cotton fabrics, yarns, and garments. It is also utilized in the coloration of leather and paper, where a strong, reactive colorant is required.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cellulosic fibers such as cotton, viscose, linen, and their blends to achieve brilliant blue colors.
• Textile Printing: Used in printing pastes for direct and discharge printing on cotton fabrics, offering sharp outlines and excellent color yield.
• Yarn Dyeing: Suitable for dyeing cotton yarns in hank, package, or beam dyeing machines for subsequent use in weaving or knitting.
• Leather Coloration: Employed in the dyeing of leather to provide deep, penetrating blue shades with good rub fastness.
• Paper Coloring: Used for the surface coloring or mass coloration of paper and specialty boards.
• Ink Formulation: A potential colorant for specialty inks where reactive properties and specific hue are required.

Basic Information

Product Name	C.I. Reactive Blue 79
CAS No.	61968-97-6
Molecular Formula	C32H14Cl2CuN14O14S4·xNa
Molecular Weight	Contact for details
Synonyms	Reactive Blue 79; Reactive Blue H-ERD; C.I. 61968-97-6; Phthalocyanine Blue Reactive Dye; Remazol Brilliant Blue R Special; Levafix Blue CA; Procion Blue H-ERD; Dianix Blue CC-FS
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Blue 79 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, shade, solubility, and fixation rate. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing the specific test results. Our quality system is designed to meet the demanding standards of the global textile industry.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure the original packaging is sealed after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Blue powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
Fixation Rate (on Cotton)	≥ 70%
Dusting Property	Low dusting

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.