Description

Direct Orange 39 is a synthetic azo dye belonging to the class of direct dyes, known for its strong affinity to cellulose fibers without the need for a mordant. This compound is valued for its ability to produce vibrant, wash-fast orange hues on various substrates, ensuring consistent color quality and performance. It is primarily utilized by manufacturers in the textile, paper, and leather industries seeking efficient and reliable dyeing solutions.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fabrics to achieve a bright orange color.
• Paper Coloring: Used in the production of colored papers, tissues, and packaging materials.
• Leather Finishing: Imparts color to leather goods, including footwear, bags, and upholstery.
• Ink Formulation: A component in the manufacture of inks for specialty printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Wood Staining: Applied for coloring wood and wood-based products.

Basic Information

Product Name	Direct Orange 39
CAS No.	1325-54-8
Molecular Formula	C32H20N6Na4O13S4
Molecular Weight	956.78 g/mol
Synonyms	Direct Orange 39; C.I. Direct Orange 39; Direct Orange G; Direct Orange GS; Direct Orange Extra; Pontamine Orange G; Benzo Orange G; Aizen Direct Orange GH; Atlantic Direct Orange G; Durazol Orange G; Sirius Orange G; Solar Orange G; Chlorazol Orange G; Diazol Orange G
EINECS	215-366-3

Quality Control

Our Direct Orange 39 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. The product is tested against key parameters including color strength, shade, solubility, and fastness properties. A Certificate of Analysis (COA) detailing purity, heavy metal content, and other relevant specifications is provided with every shipment to guarantee compliance with your application requirements.

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 and incompatible materials.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 50 ppm
Fastness Properties	Contact for details

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