Description

Basic Blue 7 is a synthetic cationic dye belonging to the triarylmethane class, widely recognized for its brilliant blue color and strong affinity for polyacrylonitrile fibers. Its primary value lies in providing excellent color fastness and a bright, clear hue, making it a critical component in high-quality dyeing processes. This product is essential for manufacturers in the textile, paper, and specialty ink industries seeking reliable and consistent colorants for their formulations.

Application

• Textile Dyeing: Primarily used for dyeing acrylic, modacrylic, and other synthetic fibers, offering excellent wash and light fastness.
• Paper Coloring: Employed in the production of colored papers, including specialty tissues, art papers, and security papers.
• Ink Manufacturing: Serves as a key pigment in the formulation of writing inks, stamp pad inks, and other aqueous-based ink systems.
• Leather Finishing: Used for dyeing leather goods to achieve vibrant and durable blue shades.
• Biological Staining: Finds application in histology and microbiology as a staining agent for microscopic analysis.
• Specialty Coatings: Incorporated into coatings where a specific blue coloration is required for product identification or aesthetic purposes.

Basic Information

Product Name	Basic Blue 7
CAS No.	2390-60-5
Molecular Formula	C₂₃H₂₆ClN₃O
Molecular Weight	395.92 g/mol
Synonyms	Victoria Pure Blue BO; C.I. 42595; Basic Blue 7; Aizen Victoria Pure Blue BOH; Astrazon Blue BG; Calcozine Blue BO; Sevron Blue B; Maxilon Blue BG; Triarylmethane Blue 7; [4-[[4-(Dimethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium chloride
EINECS	219-222-7

Quality Control

Our Basic Blue 7 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. Every lot is tested against rigorous in-house specifications, which include identity confirmation, assay, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your technical requirements.

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 and sources of ignition.

Specification

Item	Specification
Appearance	Dark green to blue powder or crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 5%
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Water Solubility	Completely soluble

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