Description

C.I. Acid Orange 80 is a synthetic acid dye belonging to the azo dye class, identified by CAS No. 12643-06-0. It is valued for its bright, vivid orange hue and strong affinity for protein-based fibers like wool, silk, and nylon, offering excellent wash and light fastness properties. This dye is essential for manufacturers in the textile, leather, and paper industries seeking reliable and consistent coloration for their products.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers and fabrics to achieve a durable orange color.
• Leather Coloring: Used in the dyeing of leather goods, providing rich and uniform coloration.
• Paper Staining: Employed for coloring specialty papers, including decorative and packaging materials.
• Ink Formulation: A component in the manufacture of inks for various printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	C.I. Acid Orange 80
CAS No.	12643-06-0
Molecular Formula	C32H24N8Na2O8S2
Molecular Weight	758.68 g/mol
Synonyms	Acid Orange 80; C.I. 18875; Acid Leather Orange G; Acid Fast Orange G; Acid Orange GS; Acid Orange G; 2,7-Naphthalenedisulfonic acid, 5-[[4-[[2-(hydroxy-kappaO)-5-methylphenyl]azo-kappaN1]-3-sulfophenyl]azo]-4-hydroxy-3-[(4-nitrophenyl)azo]-; Sodium 5-({4-[(2-hydroxy-5-methylphenyl)diazenyl]-3-sulfonatophenyl}diazenyl)-4-hydroxy-3-[(4-nitrophenyl)diazenyl]naphthalene-2,7-disulfonate
EINECS	Contact for details

Quality Control

Our production of C.I. Acid Orange 80 adheres to stringent quality control protocols to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile. Certificates of Analysis (COA) documenting these results are available upon request 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.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to Standard
Solubility in Water	Clear solution

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