Description

C.I.Sulphur Green 25 is a synthetic organic pigment belonging to the sulfur dye class, identified by CAS No. 56690-91-6. This high-performance colorant is valued for its excellent tinctorial strength and good fastness properties, providing a cost-effective and durable green hue. It is primarily required by manufacturers in the textile, leather, and specialty paper industries seeking consistent, vibrant coloration for their products.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, and other cellulosic fibers to achieve deep green shades.
• Leather Finishing: Used in the coloration of leather goods, offering good penetration and color uniformity.
• Paper Coloring: Employed in the production of specialty and decorative papers where specific green tones are required.
• Industrial Coatings: Incorporated into certain types of coatings and inks where its chemical properties are compatible.
• Wool and Silk Dyeing: Applicable for dyeing protein-based fibers under controlled process conditions.

Basic Information

Product Name	C.I.Sulphur Green 25
CAS No.	56690-91-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Sulfur Green 25; C.I. 53570; Sulphur Green 25; C.I. Pigment Green 25; D&C Green No. 25 (related); Leather Green G; Thion Green G; Kayaku Sulphur Green G; Mitsui Sulphur Green G
EINECS	Contact for details

Quality Control

Our C.I.Sulphur Green 25 is produced under a stringent quality management system. Each batch undergoes rigorous testing for key parameters including color strength, shade, solubility, and impurity profile to ensure consistency and compliance with industry standards. Certificates of Analysis (COA) documenting these results 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). Keep away from strong oxidizing agents and incompatible materials. The container must be kept tightly closed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Dark Green Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	≤ 5.0%
Water Soluble Matter	≤ 1.0%
Ash Content	≤ 1.5%
Particle Size (Residue on 80 mesh)	≤ 5.0%

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