Description

Acid Orange 67 is a synthetic azo dye belonging to the acid dye class, valued for its bright orange hue and strong affinity for protein-based fibers like wool, silk, and nylon. Its primary commercial value lies in providing excellent color fastness, particularly to light and washing, making it a reliable choice for demanding textile applications. This dye is essential for manufacturers in the textile, leather, and paper industries seeking vibrant and durable orange coloration.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers to achieve a bright orange shade with good fastness properties.
• Leather Coloring: Used in the dyeing of leather goods, providing rich and uniform color penetration.
• 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	Acid Orange 67
CAS No.	12220-06-3
Molecular Formula	C16H11N4NaO4S
Molecular Weight	378.34 g/mol
Synonyms	Acid Orange 67; C.I. Acid Orange 67; Acid Leather Orange PG; 2-Naphthalenesulfonic acid, 7-hydroxy-8-[(2-methoxyphenyl)azo]-, monosodium salt; Sodium 7-hydroxy-8-[(2-methoxyphenyl)azo]naphthalene-2-sulfonate; Orange PG (Acid dye); Acid Fast Orange PG; Lanasyn Orange S-RL
EINECS	235-417-5

Quality Control

Our Acid Orange 67 is manufactured under a stringent quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, color strength, and application performance. We provide Certificates of Analysis (COA) with key parameters including assay, shade, and fastness properties to support your quality assurance protocols.

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 to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Insoluble Matter	Max. 0.5%
pH (1% Solution)	6.0 - 8.0
Light Fastness	Good to Very Good
Washing Fastness	Good

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