Description

Acid Green 27 (C.I. 61580) is a synthetic, water-soluble anthraquinone dye belonging to the acid dye class. It is valued for its bright, clear green hue and its strong affinity for protein fibers like wool, silk, and nylon, ensuring good wash and light fastness. This dye is essential for manufacturers in the textile, leather, and paper industries seeking consistent, high-quality coloration. The compound is identified by CAS NO 6408-57-7.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers and fabrics.
• Leather Finishing: Used for coloring leather goods, providing vibrant and durable shades.
• Paper Staining: Employed in the production of specialty colored papers and paper products.
• Ink Formulation: A colorant component in certain types of inks, including for pens and markers.
• Biological Staining: Potential use as a histological stain in laboratory settings.
• Wood Staining: Can be used to impart color to wood and wood-based materials.

Basic Information

Product Name	Acid Green 27
CAS No.	6408-57-7
Molecular Formula	C28H20N2Na2O8S2
Molecular Weight	622.58 g/mol
Synonyms	Acid Green 27; C.I. 61580; Acid Green V; Alizarin Cyanine Green F; Anthraquinone Green G; D&C Green No. 5; Wool Green S; Acid Leather Green V; C.I. Acid Green 27; Sodium 1,4-bis[(2,4-dihydroxyphenyl)amino]-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate
EINECS	229-058-5

Quality Control

Our Acid Green 27 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 incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark green powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1%
Ash Content	≤ 30.0%
Heavy Metals (as Pb)	≤ 20 ppm

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