Description

Acid Orange 95 is a synthetic anionic dye belonging to the azo dye class, identified by CAS No. 12217-33-3. It is valued for its vibrant orange hue, good lightfastness, and strong affinity for protein-based fibers like wool, silk, and nylon. This high-performance dye is essential for manufacturers in the textile, leather, and paper industries seeking consistent and durable coloration.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers and fabrics to achieve bright orange shades.
• Leather Finishing: Used in the coloration of leather goods, providing rich and uniform color penetration.
• Paper Staining: Employed for tinting specialty papers, decorative papers, and security paper applications.
• 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: Suitable for mass coloration of specific synthetic polymers and plastics.

Basic Information

Product Name	Acid Orange 95
CAS No.	12217-33-3
Molecular Formula	C32H21N5Na2O8S2
Molecular Weight	713.64 g/mol
Synonyms	Acid Orange 95; C.I. Acid Orange 95; C.I. 22895; Sodium 4-[(2,4-dihydroxy-5-[(4-sulfophenyl)azo]phenyl)azo]-3-hydroxy-7-[(4-sulfophenyl)azo]naphthalene-2-sulfonate; Disodium 4-[(2,4-dihydroxy-5-[(4-sulfonatophenyl)azo]phenyl)azo]-3-hydroxy-7-[(4-sulfonatophenyl)azo]naphthalene-2-sulfonate; Acid Leather Orange PG; Lanasyn Orange S-RL
EINECS	Contact for details

Quality Control

Our Acid Orange 95 is produced under a stringent quality management system. Each batch undergoes comprehensive analysis to ensure it meets precise color strength, purity, and solubility specifications. Certificates of Analysis (COA) detailing parameters such as assay, shade, and impurity profiles 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 (HPLC)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Conforms
pH (1% Solution)	6.0 - 8.0
Ash Content	Max. 30.0%

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