Description

C.I. Acid Green 87 is a synthetic acid dye belonging to the anthraquinone chemical class, valued for its bright green hue and good lightfastness. It is a critical coloring agent for industrial applications requiring vibrant, durable shades on protein-based substrates. This product is essential for manufacturers in the textile, leather, and paper industries seeking consistent, high-quality coloration for nylon, wool, silk, and other materials.

Application

• Textile Dyeing: Primary application for dyeing nylon, wool, silk, and other polyamide fibers to achieve bright green shades.
• Leather Finishing: Used in the coloration of leather goods, providing rich and uniform green colors.
• Paper Staining: Employed for coloring specialty papers, including decorative and security papers.
• Ink Formulation: A 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 tinting and coloring wood products and veneers.

Basic Information

Product Name	C.I. Acid Green 87
CAS No.	12220-02-9
Molecular Formula	C28H20N2Na2O8S2
Molecular Weight	622.57 g/mol
Synonyms	Acid Green 87; C.I. 20495; Anthraquinone Green G; Acid Leather Green G; Acid Fast Green G; Nylon Fast Green GL; Telon Green GL; Acid Green G; Dermacid Green 2G
EINECS	235-411-6

Quality Control

Our C.I. Acid Green 87 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous in-house specifications for critical parameters including color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing purity, physical properties, and conformance is provided with every shipment.

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. The product is light-sensitive (store away from light).

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.