Description

Acid Green 73 is a synthetic acid dye belonging to the anthraquinone class, valued for its bright green hue and good lightfastness. It is a critical coloring agent for industrial applications requiring vibrant, durable shades. This product is essential for manufacturers in the textile, leather, and paper industries seeking consistent and reliable dye performance.

Application

• Textile Dyeing: Primarily used for dyeing wool, silk, and polyamide (nylon) fibers to achieve bright green shades.
• Leather Coloring: Applied in the finishing process of leather goods to provide uniform and attractive green coloration.
• Paper Staining: Employed in the production of specialty papers, including decorative and packaging materials.
• Ink Formulation: Used as a colorant in the manufacture of inks for various printing applications.
• Biological Staining: Finds application in laboratory settings as a histological stain for microscopic analysis.
• Plastics and Polymers: Can be used to color certain types of plastics and synthetic materials.

Basic Information

Product Name	Acid Green 73
CAS No.	12219-93-1
Molecular Formula	C28H20N2Na2O8S2
Molecular Weight	622.57 g/mol
Synonyms	Acid Green 73; C.I. Acid Green 73; Anthraquinone Green G; Lissamine Green B; Acid Leather Green G; Wool Green S; Acid Fast Green G; C.I. 61585; D&C Green No. 5 (discontinued use); Food Green 2 (discontinued use)
EINECS	235-403-6

Quality Control

Our Acid Green 73 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against stringent in-house specifications for critical parameters including color strength, shade, solubility, and impurity profile. 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 strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Dark green powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to 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.