Description

Acid Orange 8 is a synthetic monoazo acid dye widely used for its vibrant color and good fastness properties. It is valued for its ability to provide consistent, bright orange shades on protein fibers like wool, silk, and nylon. This dye is essential for manufacturers in the textile, leather, and paper industries seeking reliable coloration for their products. Its compatibility with various dyeing processes makes it a versatile choice for industrial applications.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers to achieve bright orange hues.
• Leather Coloring: Used in the dyeing of leather goods, providing good penetration and color fastness.
• Paper Staining: Employed for coloring paper products, including specialty papers and packaging materials.
• 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.
• Wood Staining: Applied for coloring wood and wood-based products.

Basic Information

Product Name	Acid Orange 8
CAS No.	5850-86-2
Molecular Formula	C₁₆H₁₁N₂NaO₄S
Molecular Weight	350.32 g/mol
Synonyms	Acid Orange A; C.I. Acid Orange 8; Acid Orange II; Acid Leather Orange A; Acid Leather Orange II; Acid Fast Orange A; 4-[(2-Hydroxy-1-naphthyl)azo]benzenesulfonic acid sodium salt; 1-(Phenylazo)-2-naphthol-6-sulfonic acid sodium salt
EINECS	227-456-4

Quality Control

Our Acid Orange 8 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous in-house specifications, which typically include parameters for color strength, shade, solubility, and impurity profiles. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your technical requirements.

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 such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%

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