Description

Direct Dark Brown Nm is a synthetic organic dye belonging to the direct dye class, identified by CAS No. 220308-48-5. It is valued for its strong affinity to cellulosic fibers like cotton, rayon, and paper, providing deep, substantive coloration with good wash-fastness properties. This product is essential for manufacturers in the textile, paper, and leather industries seeking efficient and cost-effective brown dyeing solutions.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fabrics to achieve dark brown shades.
• Paper Coloring: Used in the production of colored paper, paperboard, and specialty packaging materials.
• Leather Finishing: Imparts color to leather goods, including footwear, bags, and upholstery.
• Wood Staining: Applicable for staining wood and bamboo products to enhance their aesthetic appeal.
• Ink Formulation: A colorant component in the manufacture of certain inks for industrial marking or printing.

Basic Information

Product Name	Direct Dark Brown Nm
CAS No.	220308-48-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Direct Brown Nm; C.I. Direct Brown; Direct Dark Brown; Direct Brown NM; Diazol Brown N; Direct Fast Brown; Direct Dye Brown NM; Paper Brown N
EINECS	Contact for details

Quality Control

Our Direct Dark Brown Nm is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent shade, strength, and application performance. Certificates of Analysis (COA) detailing purity, physical properties, and conformance to standard specifications are available upon request.

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 when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark Brown Powder
Identification	Conforms (IR)
Assay (Dye Content)	≥ 95% (HPLC)
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.