Description

C.I.Acid Orange 82 is a synthetic azo dye belonging to the acid dye class, valued for its bright and durable orange hue. It is a critical component for imparting vibrant, wash-fast coloration to protein-based fibers like wool, silk, and nylon. This dye is essential for manufacturers in the textile, leather, and paper industries seeking reliable and consistent color performance. Its chemical stability makes it suitable for various dyeing and printing processes where color integrity is paramount.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and polyamide (nylon) fibers to achieve bright orange shades with good light and wash fastness.
• Leather Coloring: Used in the dyeing of leather goods, providing rich and uniform orange coloration.
• Paper Staining: Employed in the production of specialty papers, including decorative and packaging materials.
• Ink Formulation: A colorant for certain types of inks, particularly where acid dye compatibility is required.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Polymer Coloring: Can be used for mass coloration of specific synthetic polymers during manufacture.

Basic Information

Product Name	C.I.Acid Orange 82
CAS No.	12217-03-7
Molecular Formula	C16H11N4NaO4S
Molecular Weight	378.34 g/mol
Synonyms	Acid Orange 82; C.I. 24785; Acid Leather Orange D; Acid Orange GS; Acid Fast Orange GS; 2-Naphthalenesulfonic acid, 7-hydroxy-8-[(2-methoxyphenyl)azo]-, monosodium salt; Sodium 7-hydroxy-8-[(2-methoxyphenyl)azo]naphthalene-2-sulfonate
EINECS	Contact for details

Quality Control

Our production of C.I.Acid Orange 82 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed against key parameters including color strength, shade, solubility, and impurity profiles. Certificates of Analysis (COA) documenting purity, assay, and conformance to specification are available for every shipment to support your quality assurance processes.

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 light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	Max. 5.0%
Water Solubility	Conforms
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.