Description

Acid Green 28 is a synthetic organic dye belonging to the acid dye class, known for its vibrant green color and good affinity for protein-based fibers. This product is valued for its excellent light and wash fastness properties, making it a reliable choice for demanding coloration processes. It is primarily used in the textile industry for dyeing wool, silk, and nylon, and also finds applications in leather finishing and paper coloration.

Application

• Primary dyeing of wool, silk, and nylon fibers in the textile industry.
• Leather finishing and dyeing for footwear, apparel, and upholstery.
• Coloration of paper products, including specialty papers and packaging.
• As a colorant for inks and toners in specific printing applications.
• Potential use as a biological stain in laboratory and microscopy settings.
• Dyeing of other protein-based or polyamide materials.

Basic Information

Product Name	Acid Green 28
CAS No.	12217-29-7
Molecular Formula	C28H20N2Na2O8S2
Molecular Weight	622.55 g/mol
Synonyms	Acid Green 28; Acid Green G; C.I. Acid Green 28; C.I. 61580; Wool Green S; Lissamine Green B; Acid Leather Green G; Acid Fast Green G; Acid Brilliant Green S; Acid Green GS; D&C Green No. 8 (historical); Food Green 1 (historical)
EINECS	Contact for details

Quality Control

Our Acid Green 28 is manufactured under a strict quality management system. Each batch undergoes comprehensive testing to ensure consistency in color strength, shade, solubility, and purity. We provide Certificates of Analysis (COA) with key parameters to verify compliance with customer specifications and industry standards.

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.

Specification

Item	Specification
Appearance	Dark green powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Assay (HPLC)	≥ 95%
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Shade	Conforms to standard
Light Fastness	≥ 5-6 (ISO 105-B02)
Wash Fastness	≥ 4-5 (ISO 105-C03)

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