Description

Acid Green 68 is a synthetic acid dye belonging to the anthraquinone class, known for its bright green hue and excellent color fastness properties. Its primary value lies in providing vibrant, durable coloration for synthetic fibers, particularly polyamide (nylon) and wool, with strong affinity and level dyeing characteristics. This dye is essential for manufacturers in the textile, leather, and specialty paper industries seeking reliable and consistent green shades for their products. Acid Green 68 CAS NO 61901-32-4 is a key component for achieving a wide range of green tones in demanding applications.

Application

• Primary dyeing of polyamide (nylon) fibers for apparel, automotive textiles, and carpets.
• Coloration of wool and silk fabrics, offering good wash and light fastness.
• Leather dyeing for footwear, upholstery, and fashion accessories.
• Printing inks for specialty papers and security documents.
• As a colorant for anodized aluminum in architectural and decorative applications.
• Biological staining in microscopy and histology laboratories (specific purified grades).
• Manufacture of colored plastics and polymers where acid dye compatibility is required.

Basic Information

Product Name	Acid Green 68
CAS No.	61901-32-4
Molecular Formula	C28H20N2Na2O8S2
Molecular Weight	622.55 g/mol
Synonyms	Acid Green 68; C.I. Acid Green 68; Anthraquinone Green G; Acid Leather Green G; Nylon Fast Green G; C.I. 61525; Sodium 1,4-bis[(2,4-dihydroxyphenyl)amino]-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate; Acid Brilliant Green S
EINECS	263-318-5

Quality Control

Every batch of Acid Green 68 is manufactured and tested under a strict quality management system. Our products undergo rigorous quality testing to ensure compliance with industry standards for dye content, shade, solubility, and fastness properties. Certificates of Analysis (COA) detailing purity, strength, and impurity profiles are available upon request to support your quality assurance protocols.

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). This product is hygroscopic (moisture-sensitive); ensure the container is kept sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Dark green powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Dye Content	≥ 95%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Shade	Conforms to standard
Solubility in Water	Conforms
Fastness Properties (Light, Wash)	Grade 4-5 (Typical)

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