Description

Acid Orange 86 is a synthetic azo dye belonging to the acid dye class, identified by CAS No. 12220-07-4. It is valued for its strong and vibrant orange hue, excellent lightfastness, and good leveling properties on protein-based substrates. This high-performance dye is essential for manufacturers in the textile and leather industries seeking consistent, high-quality coloration for nylon, wool, silk, and leather goods.

Application

• Textile Dyeing: Primary application for dyeing nylon, wool, and silk fibers and fabrics to achieve bright orange shades.
• Leather Coloring: Used in the dyeing of leather products, providing rich and uniform color penetration.
• Paper Staining: Employed for coloring specialty papers, including decorative and security papers.
• Ink Formulation: A colorant component in the manufacture of inks for various printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Polymer Coloring: Used to impart color to certain synthetic polymers and plastics during manufacturing.

Basic Information

Product Name	Acid Orange 86
CAS No.	12220-07-4
Molecular Formula	C20H13N4NaO4S
Molecular Weight	452.40 g/mol
Synonyms	Acid Orange R; C.I. Acid Orange 86; Acid Leather Orange R; Naphthalene Orange G; 7-Hydroxy-8-[(E)-phenyldiazenyl]naphthalene-1,3-disulfonic acid sodium salt; 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(2-phenyldiazenyl)-, monosodium salt; Sodium 7-hydroxy-8-(phenyldiazenyl)naphthalene-1,3-disulfonate
EINECS	Contact for details

Quality Control

Our Acid Orange 86 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise color strength, shade, and purity specifications. A Certificate of Analysis (COA) detailing key parameters such as assay, solubility, and impurity profile is provided with each shipment to guarantee batch-to-batch consistency and performance reliability.

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)
Moisture Content	Max. 5.0%
Water Solubility	Conforms
Ash Content	Max. 0.5%

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