Description

Vat Blue 1, Reduced is a key intermediate and colorant in the vat dye class, known for its excellent fastness properties. This compound is essential for producing brilliant and durable blue shades on cellulosic fibers like cotton. It is primarily sought after by manufacturers in the textile dyeing and printing industries for its superior color yield and wash-fastness. Its reduced form is critical for the application process in vat dyeing, where it is solubilized before being oxidized back to its insoluble pigment form on the fabric.

Application

• Textile Dyeing: Primary application for dyeing cotton, linen, and other cellulosic fibers to achieve deep, fast blue colors.
• Textile Printing: Used in printing pastes for creating patterned fabrics with excellent color fastness.
• Denim Production: A key component in producing indigo and blue shades for denim fabrics.
• Industrial Pigmentation: Can serve as a colorant for paper, leather, and other specialty materials requiring stable blue hues.
• Chemical Intermediate: Used in the synthesis of other dyes and organic compounds.
• Research & Development: Employed in laboratories for dye chemistry studies and development of new coloring processes.

Basic Information

Product Name	Vat Blue 1, Reduced
CAS No.	894-86-0
Molecular Formula	C₂₈H₁₄N₂O₄
Molecular Weight	442.42 g/mol
Synonyms	Indanthrene Blue RS, Reduced; C.I. Vat Blue 1, Leuco; C.I. 73000; Indanthrone, reduced form; 16,17-Dihydrodinaphtho[2,3-a:2',3'-h]phenazine-5,9,14,18-tetrone; Vat Blue RS, Reduced; Leuco Indanthrene Blue RS; Cl 73000
EINECS	213-993-5

Quality Control

Our Vat Blue 1, Reduced is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and application performance. We provide comprehensive Certificates of Analysis (COA) detailing key parameters such as assay, shade, and solubility. Our quality commitment ensures the product meets the high standards required for industrial dyeing processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is easily oxidized; it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term stability and to minimize contact with air. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Dark Blue to Violet Powder or Paste
Identification (IR)	Conforms to Standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	Max. 1.0%
Solubility (in Alkali)	Complete, Clear Solution
Particle Size (if powder)	Passes through 80 mesh

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