Description

C.I. Acid Brown 160 is a synthetic azo dye belonging to the acid dye class, widely recognized for its application in textile coloration. This product is valued for its ability to provide consistent, durable brown shades with good fastness properties on protein fibers like wool, silk, and nylon. It is a critical component for dye houses and chemical manufacturers serving the textile, leather, and specialty paper industries globally. The compound is identified by CAS No. 61724-12-7.

Application

• Primary dyeing of wool, silk, and nylon textiles to achieve brown hues.
• Coloration of leather goods, including upholstery, apparel, and accessories.
• Dyeing of paper for specialty packaging, decorative, and security applications.
• Used in the formulation of inks for various marking and printing purposes.
• Potential use as a staining agent in biological or histological applications.
• Blending with other acid dyes to create a custom color palette for specific customer requirements.

Basic Information

Product Name	C.I. Acid Brown 160
CAS No.	61724-12-7
Molecular Formula	C32H21N5Na4O19S4
Molecular Weight	995.78 g/mol
Synonyms	Acid Brown 160; Acid Leather Brown PR; C.I. 24875; Acid Brown PR; Acid Fast Brown PR; Acidol Brown M-PR; Amacid Brown PR; Dermacid Brown PR; Telon Brown PR; Leather Brown PR; Nylosan Brown P-RL; Supranol Brown PR
EINECS	262-983-8

Quality Control

Our production of C.I. Acid Brown 160 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance. Every lot is tested against key parameters including color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and conformance to specification is provided with each shipment and is 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). Keep away from strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Brown powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 50 ppm
pH (1% Solution)	6.0 - 8.0

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