Description

Basic Orange 31 is a synthetic cationic dye belonging to the azo class, widely recognized for its strong affinity to polyacrylonitrile fibers. This product is essential for achieving vibrant, wash-fast orange to red-orange shades in industrial dyeing processes. It is primarily used by manufacturers in the textile, leather, and paper industries seeking reliable and consistent coloration.

Application

• Textile Dyeing: Primary application for dyeing acrylic, modacrylic, and cationic-dyeable polyester fibers.
• Leather Finishing: Used for coloring leather goods, providing rich and uniform shades.
• Paper Coloration: Imparts color to specialty papers, including decorative and packaging materials.
• Ink Manufacturing: Serves as a colorant for certain types of inks and toners.
• Biological Staining: Potential use as a histological stain in laboratory settings.

Basic Information

Product Name	Basic Orange 31
CAS No.	61901-61-9
Molecular Formula	C20H21ClN6
Molecular Weight	380.87 g/mol
Synonyms	Aizen Cathilon Orange GLH; Astrazon Orange G; Basacryl Orange GL; C.I. Basic Orange 31; Maxilon Orange GRL; 1,3,3-Trimethyl-2-[(E)-[4-[(E)-phenyldiazenyl]phenyl]diazenyl]-3H-indol-1-ium chloride; Cationic Orange GL; Basic Orange GL
EINECS	263-322-5

Quality Control

Our Basic Orange 31 is manufactured under a stringent quality management system. Each batch is tested to ensure it meets precise specifications for color strength, shade, solubility, and impurity profiles. A Certificate of Analysis (COA) detailing results for assay, identification, and related substances is provided to guarantee batch-to-batch consistency and performance reliability.

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.

Specification

Item	Specification
Appearance	Orange to red-orange powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%

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