Description

Acid Orange 127 is a synthetic azo dye belonging to the acid dye class, valued for its bright orange hue and good affinity for protein-based fibers. Its primary commercial importance lies in providing vibrant, wash-fast coloration for textiles, particularly wool, silk, and nylon. This dye is essential for manufacturers in the textile and leather industries seeking consistent, high-quality colorants for their dyeing and printing processes. The compound is supplied as a high-purity powder to ensure reliable performance in industrial applications.

Application

• Primary dyeing of wool and silk fabrics and yarns.
• Coloration of nylon fibers and textiles.
• Leather dyeing for footwear, apparel, and upholstery.
• Ink formulation for specialized printing applications.
• As a colorant for paper and other specialty materials.
• Used in biological staining for microscopy (histology).

Basic Information

Product Name	Acid Orange 127
CAS No.	12269-96-4
Molecular Formula	C32H24N4Na2O8S2
Molecular Weight	694.66 g/mol
Synonyms	Acid Orange AG; C.I. Acid Orange 127; Acid Fast Orange AG; Sodium 4-[(2,4-dihydroxy-5-[(2-methoxy-5-methyl-4-sulfophenyl)azo]phenyl)azo]-3-hydroxynaphthalene-2,7-disulfonate; 2,7-Naphthalenedisulfonic acid, 4-[(2,4-dihydroxy-5-[(2-methoxy-5-methyl-4-sulfophenyl)azo]phenyl)azo]-3-hydroxy-, disodium salt; Lanasyn Orange S-AG; Supranol Fast Orange AG
EINECS	Contact for details

Quality Control

Our Acid Orange 127 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested for critical parameters including color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and conformance to specification is provided with every shipment 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 incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

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. 1.0%

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