Description

Orange Iv CAS NO 554-73-4 is a synthetic organic compound belonging to the azo dye class, known for its distinct orange color. This high-purity chemical is valued for its consistent performance and reliable color strength in demanding industrial applications. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking a stable and vibrant orange pigment.

Application

• Textile Dyeing and Printing: Used as a colorant for synthetic and natural fibers, providing a bright orange hue.
• Ink Formulation: Serves as a key pigment in the production of printing inks for packaging and publications.
• Industrial Coatings and Paints: Incorporated into coatings for plastics,纸张, and other substrates requiring colorfastness.
• Biological Staining: Employed in laboratory settings as a histological stain for microscopic analysis.
• Paper Coloring: Used in the manufacture of specialty colored papers and paper products.
• Plastics and Polymers: Acts as a masterbatch additive to color various plastic materials during production.

Basic Information

Product Name	Orange Iv
CAS No.	554-73-4
Molecular Formula	C18H14N3NaO3S
Molecular Weight	375.38 g/mol
Synonyms	Acid Orange 5; C.I. 13080; Tropaeolin O; Orange IV; Sodium 4-[(2,4-dihydroxyphenyl)azo]benzenesulfonate; 4-[(2,4-Dihydroxyphenyl)azo]benzenesulfonic acid sodium salt; Tropaeolin OO; Wool Orange
EINECS	209-064-7

Quality Control

Our Orange Iv is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for color value, purity, and solubility. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with each shipment to guarantee traceability and compliance.

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. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Orange to brownish-orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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