Description

C.I. Acid Blue 279 is a synthetic organic dye belonging to the acid dye class, widely recognized for its vibrant blue color and strong affinity for protein-based fibers. Its primary value lies in providing excellent color fastness and level dyeing properties, making it a critical component for achieving consistent, high-quality coloration. This dye is essential for manufacturers in the textile, leather, and paper industries who require reliable and durable blue shades for their products.

Application

• Textile Dyeing: Primary application for dyeing protein fibers such as wool, silk, and nylon, offering good wash and light fastness.
• Leather Finishing: Used for coloring leather goods, providing uniform and deep penetration for a consistent finish.
• Paper Coloration: Employed in the production of specialty papers, including decorative and packaging materials.
• Ink Formulation: A component in the manufacture of inks for various printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Polymer Tinting: Can be used to impart color to certain synthetic polymers and plastics.

Basic Information

Product Name	C.I. Acid Blue 279
CAS No.	61967-94-0
Molecular Formula	C32H26N4Na2O8S2
Molecular Weight	696.66 g/mol
Synonyms	Acid Blue 279; C.I. 61530; Acid Leather Blue RL; Acid Blue RL; Acid Navy Blue RL; Nylosan Blue N-RL; Telon Blue RL; Supranol Blue RL
EINECS	Contact for details

Quality Control

Our C.I. Acid Blue 279 is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Each lot undergoes comprehensive analytical testing, including identification, purity assay, and strength evaluation, to meet precise colorant specifications. Certificates of Analysis (COA) documenting all quality parameters are available upon request to support your quality assurance protocols.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark Blue Powder or Granules
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to Standard
Fastness Properties	Contact for details

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