Description

Acid Brown 147 is a synthetic organic dye belonging to the acid dye class, widely recognized for its application in textile coloration. This product is valued for its ability to produce consistent, deep brown shades with good fastness properties on protein fibers like wool, silk, and nylon. It is an essential component for manufacturers in the textile and leather industries seeking reliable and vibrant dyeing results. Acid Brown 147 CAS NO 12211-50-6 is also utilized in specialized applications such as the coloring of paper and anodized aluminum.

Application

• Primary dyeing of wool, silk, and other protein-based textiles.
• Coloration of polyamide fibers (nylon) for apparel and carpets.
• Leather dyeing for footwear, upholstery, and accessories.
• Specialized applications in paper coloration and surface coating.
• Used as a colorant for anodized aluminum in architectural and decorative finishes.
• Potential use in the formulation of inks and artistic pigments.

Basic Information

Product Name	Acid Brown 147
CAS No.	12211-50-6
Molecular Formula	C32H21N5Na2O8S2
Molecular Weight	713.65 g/mol
Synonyms	Acid Brown BR; C.I. Acid Brown 147; Acid Leather Brown BR; Acid Fast Brown BR; Brown BR Acid Dye; Acid Brown 147 (C.I. 20190); 2-Naphthalenesulfonic acid, 7-[[4-[[2-(aminosulfonyl)-4-nitrophenyl]azo]-1-naphthalenyl]azo]-3-[[4-[[2-(aminosulfonyl)-4-nitrophenyl]azo]-1-naphthalenyl]azo]-4-hydroxy-, disodium salt
EINECS	Contact for details

Quality Control

Our Acid Brown 147 is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Each lot undergoes comprehensive analytical testing, including spectrophotometric analysis for strength and shade, and assessment of key physical parameters. A Certificate of Analysis (COA) detailing purity, solubility, and fastness properties is provided with every shipment to guarantee it meets your specific 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.

Specification

Item	Specification
Appearance	Brown Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to Standard
Fastness Properties	To be specified per grade

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