Description

Direct Brown 115 is a synthetic azo dye belonging to the direct dye class, widely recognized for its strong affinity to cellulosic fibers. This product is valued for its ability to produce a rich, durable brown coloration with good wash and light fastness properties in industrial dyeing processes. It is primarily used by manufacturers in the textile, leather, and paper industries seeking consistent and cost-effective dyeing solutions for natural fibers.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fabrics to achieve a uniform brown shade.
• Leather Finishing: Used in the coloring of leather goods, providing deep and even penetration for a consistent brown finish.
• Paper Coloring: Employed in the production of colored papers, paperboards, and specialty packaging materials.
• Wood Staining: Applicable for staining wood and wood-based products to impart a brown color.
• Ink Formulation: Can be utilized as a colorant in the formulation of certain types of inks.

Basic Information

Product Name	Direct Brown 115
CAS No.	12239-29-1
Molecular Formula	C35H25N7Na4O13S4
Molecular Weight	992.82 g/mol
Synonyms	Direct Brown A-2G; C.I. Direct Brown 115; Direct Brown A2G; Direct Fast Brown A2G; Direct Brown A-2G (C.I. 29150); Benzo Brown A2G; Pontamine Brown A2G; Atlantic Brown A2G
EINECS	Contact for details

Quality Control

Our Direct Brown 115 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested for key parameters including color strength, shade, solubility, and impurity profile to meet industrial application standards. A Certificate of Analysis (COA) documenting purity, physical properties, and conformance to specification is provided with every shipment.

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.

Specification

Item	Specification
Appearance	Brown to dark brown powder
Identification	Conforms (IR / HPLC)
Color Strength	100 ± 3% (Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
pH (1% Solution)	6.0 - 8.0
Fastness Properties	Contact for details

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