Description

Acid Orange 89 is a synthetic anionic dye belonging to the azo dye class, widely recognized for its vibrant orange hue and excellent dyeing properties. This product is valued for its strong color strength, good lightfastness, and compatibility with protein-based fibers like wool, silk, and nylon. It is primarily sought after by manufacturers in the textile, leather, and paper industries for dyeing and printing applications where a durable and bright orange color is required.

Application

• Primary dyeing of wool, silk, and nylon fibers in the textile industry.
• Leather finishing and coloring for footwear, apparel, and upholstery.
• Paper coloration for specialty papers, packaging, and decorative items.
• Ink formulation for printing applications requiring specific orange shades.
• Biological staining in laboratory and microscopy applications (specific grades).
• As a colorant for non-food contact polymers and plastics.

Basic Information

Product Name	Acid Orange 89
CAS No.	12269-95-3
Molecular Formula	C32H24N8Na2O8S2
Molecular Weight	758.68 g/mol
Synonyms	Acid Orange 89; C.I. Acid Orange 89; C.I. 20235; Acid Leather Orange PR; Acid Fast Orange PR; Wool Orange PR; Naphthalene Orange G; Sodium 4,4'-(1,3,4-thiadiazole-2,5-diyl)bis(5-hydroxy-7-sulfo-2-naphthoate); 2-Naphthalenecarboxylic acid, 4,4'-(1,3,4-thiadiazole-2,5-diyl)bis[5-hydroxy-7-sulfo-, sodium salt (1:2)
EINECS	Contact for details

Quality Control

Our Acid Orange 89 is manufactured under a strict quality management system. Each batch undergoes comprehensive testing for key parameters including color strength, shade, solubility, and impurity profile to ensure consistent performance and batch-to-batch uniformity. Certificates of Analysis (COA) detailing these specifications are available upon request.

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	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1%
Ash Content	≤ 30.0%
Heavy Metals (as Pb)	≤ 50 ppm

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