Description

Sodium 5-[[4-[Bis(2-Hydroxyethyl)Amino]Phenyl]Azo]-8-[(o-Tolyl)Azo]Naphthalene-2-Sulphonate is a high-purity, synthetic azo dye intermediate known for its distinct chromophoric properties. This compound is valued for its ability to impart specific color characteristics and its reactivity in the synthesis of more complex dye molecules. It is primarily sought after by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and stable colorants.

Application

• Primary Intermediate for Dye Synthesis: A key building block in the manufacture of acid dyes, direct dyes, and reactive dyes for textile fibers like nylon, wool, and silk.
• Inkjet and Printing Inks: Used in the formulation of high-performance inks for digital printing and packaging, providing excellent color strength and stability.
• Paper Coloring: Employed in the production of colored papers and paper products requiring specific hue and lightfastness.
• Leather Dyeing: Utilized in the tanning and finishing process to dye leather goods with rich, uniform colors.
• Biological Staining: Potential use as a staining agent in histological and cytological applications in life science research.
• Specialty Pigments: Serves as a precursor in the synthesis of pigments for plastics, coatings, and artists' materials.

Basic Information

Product Name	Sodium 5-[[4-[Bis(2-Hydroxyethyl)Amino]Phenyl]Azo]-8-[(o-Tolyl)Azo]Naphthalene-2-Sulphonate
CAS No.	67875-14-3
Molecular Formula	C29H28N5NaO6S
Molecular Weight	597.62 g/mol
Synonyms	Acid Black 210; C.I. 28440; Sodium 8-(2-methylphenyl)azo-5-[4-[bis(2-hydroxyethyl)amino]phenyl]azo-2-naphthalenesulfonate; 2-Naphthalenesulfonic acid, 5-[[4-[bis(2-hydroxyethyl)amino]phenyl]azo]-8-[(2-methylphenyl)azo]-, sodium salt; Dye intermediate 67875-14-3; Azo dye intermediate for black shades; o-Tolyl azo naphthalene sulphonate derivative
EINECS	Contact for details

Quality Control

Our Sodium 5-[[4-[Bis(2-Hydroxyethyl)Amino]Phenyl]Azo]-8-[(o-Tolyl)Azo]Naphthalene-2-Sulphonate is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color value, and chemical identity. Certificates of Analysis (COA) detailing key specifications such as assay, impurity profile, and physical properties are provided and 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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