Description

Acid Orange 88 is a synthetic azo dye belonging to the acid dye class, characterized by its vibrant orange color and good solubility in water. This product is valued for its strong affinity for protein fibers like wool, silk, and nylon, providing excellent color fastness and level dyeing properties. It is primarily required by the textile industry for dyeing and printing, as well as by manufacturers of leather, paper, and specialty inks seeking reliable and consistent orange hues.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers and fabrics.
• Leather Coloring: Used in the tanning industry to impart an orange color to leather goods.
• Paper Staining: Employed in the production of colored papers and paper products.
• Ink Formulation: A colorant component for specialty inks, including inks for ballpoint pens and markers.
• Biological Staining: Potential use as a histological stain in laboratory settings.
• Polymer Coloring: Can be used for mass coloration of certain synthetic polymers.

Basic Information

Product Name	Acid Orange 88
CAS No.	12239-03-1
Molecular Formula	C16H11N2NaO4S
Molecular Weight	350.32 g/mol
Synonyms	Acid Orange A; C.I. Acid Orange 88; Acid Leather Orange A; Acid Fast Orange A; Wool Orange A; Sodium 4-[(2,4-dihydroxyphenyl)azo]benzenesulfonate; Benzenesulfonic acid, 4-[(2,4-dihydroxyphenyl)azo]-, sodium salt
EINECS	235-453-8

Quality Control

Our Acid Orange 88 is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including spectrophotometric purity assessment and impurity profiling, to ensure it meets consistent performance standards for color strength and solubility. Certificates of Analysis (COA) detailing lot-specific results are available upon request 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 (Color Strength)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
pH (1% Solution)	6.0 - 8.0
Ash Content	Max. 1.0%

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