Description

2-[[2,5-Dimethoxy-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]-n-[2,5-Dimethoxy-4-(Sulphooxy)Phenyl]-3-Oxobutyramide, Sodium Salt is a high-purity, water-soluble synthetic organic compound belonging to the azo dye class. This product is engineered for applications requiring precise color properties and excellent stability in aqueous systems. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking reliable and consistent colorant performance.

Application

• Textile Dyeing: As a key colorant for dyeing natural and synthetic fibers, offering good wash and light fastness.
• Ink Formulation: Used in the production of water-based inks for packaging, writing, and printing applications.
• Specialty Coatings: Provides coloration in industrial and decorative coatings where water solubility is advantageous.
• Paper Coloring: Employed in the surface coloring and coating of specialty papers.
• Biological Staining: Potential use as a histological or cytological stain in laboratory settings.
• Research & Development: Serves as a chemical intermediate or reference standard in organic synthesis and analytical chemistry.

Basic Information

Product Name	2-[[2,5-Dimethoxy-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]-n-[2,5-Dimethoxy-4-(Sulphooxy)Phenyl]-3-Oxobutyramide, Sodium Salt
CAS No.	93962-60-8
Molecular Formula	C22H25N3O15S3Na2
Molecular Weight	~ 737.66 g/mol (as disodium salt)
Synonyms	Reactive Black 5 (sodium salt); C.I. 20505; Remazol Black B; Sumifix Black B; Levafix Black EB; Dianix Black BG-FS; Procion Black H-EXL; Azo Black (sulfonated derivative)
EINECS	Contact for details

Quality Control

Our production of 2-[[2,5-Dimethoxy-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]-n-[2,5-Dimethoxy-4-(Sulphooxy)Phenyl]-3-Oxobutyramide, Sodium Salt adheres to stringent quality management protocols. Every batch is analyzed to ensure high purity, consistent color strength, and compliance with relevant industry specifications. Comprehensive Certificates of Analysis (COA) detailing identity, assay, impurity profile, and physical parameters are available upon request.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Water Content (KF)	≤ 5.0%
Ash Content (Sulfated)	≤ 20.0%
Solubility in Water	Clear solution
pH (1% Solution)	6.0 - 8.0

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