Description

Basic Orange 33 is a synthetic cationic dye belonging to the azo class, identified by CAS No. 12217-46-8. This product is valued for its strong affinity to polyacrylonitrile fibers, providing vibrant and wash-fast coloration. It is primarily required by manufacturers in the textile industry for dyeing acrylic and modacrylic fibers, as well as by paper and leather producers seeking consistent, high-quality colorants.

Application

• Primary Textile Dyeing: Exhaust and continuous dyeing of acrylic, modacrylic, and basic-dyeable polyester fibers.
• Paper Coloring: Imparting color to specialty papers, including decorative and security papers.
• Leather Finishing: Dyeing of leather goods to achieve uniform and rich orange hues.
• Ink Formulation: Used as a colorant in the manufacture of inks for various printing applications.
• Biological Staining: Employed in histological and cytological staining procedures in laboratory settings.

Basic Information

Product Name	Basic Orange 33
CAS No.	12217-46-8
Molecular Formula	C₁₂H₁₃ClN₄
Molecular Weight	248.71 g/mol
Synonyms	Aizen Cathilon Orange GLH; Astrazon Orange G; Basic Orange GL; C.I. Basic Orange 33; Maxilon Orange GL; Orasol Orange GL; Sevron Orange GL; 1,3,3-Trimethyl-2-[(E)-2-(1,3,3-trimethylindolin-2-ylidene)ethylidene]indoline hydrochloride
EINECS	Contact for details

Quality Control

Our Basic Orange 33 is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing, including spectrophotometric purity assessment and strength evaluation, to ensure it meets the high standards required for industrial dyeing applications. A Certificate of Analysis (COA) detailing specific batch results is provided with each 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.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to standard
Assay (Color Strength)	≥ 98%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade on Acrylic	Conforms to standard
Fastness Properties	Contact for details

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