Description

Mordant Brown 86 is a high-purity, synthetic organic dye belonging to the mordant dye class, identified by CAS No. 71775-65-0. This compound is valued for its ability to form stable, colorfast complexes with metal ions, producing rich and durable brown shades on various substrates. It is an essential component for industrial manufacturers and textile processors seeking reliable and consistent dyeing performance. Its primary applications are found in the textile, leather, and specialty paper industries.

Application

• Textile Dyeing: Primarily used for dyeing wool, silk, and nylon fibers, where it forms stable complexes with chromium or aluminum mordants to achieve colorfast brown hues.
• Leather Finishing: Employed in the dyeing of leather goods, providing durable and uniform brown coloration for products like upholstery, footwear, and accessories.
• Paper Staining: Used for the coloration of specialty papers, including decorative papers and security documents, where consistent tone is required.
• Wood Staining: Applied in wood treatment processes to impart a stable brown color to timber and wood products.
• Biological Staining (Histology): May be utilized in microscopic techniques for staining tissue samples in laboratory settings.
• Ink Formulation: Serves as a colorant in the manufacture of certain types of inks for industrial marking or printing.

Basic Information

Product Name	Mordant Brown 86
CAS No.	71775-65-0
Molecular Formula	C16H12CrN4NaO8S
Molecular Weight	503.34 g/mol
Synonyms	Acid Chrome Brown SG; C.I. Mordant Brown 86; Chromate(3-), [5-[[4-[(2-hydroxy-5-sulfophenyl)azo]phenyl]azo]-2-hydroxybenzoato(3-)]-, sodium; Sodium (5-{[4-({2-hydroxy-5-[(sulfonatooxy)phenyl]}diazenyl)phenyl]diazenyl}-2-hydroxybenzoato)chromate(1-); Mordant Brown SG; Chrome Brown SG; C.I. 14845
EINECS	Contact for details

Quality Control

Our Mordant Brown 86 is manufactured under a strict quality management system. Each batch undergoes rigorous testing to ensure it meets high-purity standards and consistent performance specifications for dye strength and shade. A comprehensive Certificate of Analysis (COA) detailing purity, metal content, and physical parameters is provided with every shipment to guarantee traceability and compliance.

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). This product is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Brown to dark brown powder
Identification (IR)	Conforms to standard
Assay (Dye Content)	Min. 95%
Moisture Content	Max. 5.0%
Water Insoluble Matter	Max. 0.5%
Chromium Content	As per COA
Shade & Strength	Within ± 5% of standard
Solubility (in Water)	Conforms

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