Description

5-[[2,4-Dihydroxy-3-[(4-Nitrophenyl)Azo]Phenyl]Azo]-4-Hydroxy-3-[(2-Hydroxy-5-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonic Acid is a high-purity, complex azo dye intermediate known for its precise chromophoric properties. This compound is critical for synthesizing specialized dyes and pigments that require excellent color strength and specific light-fastness characteristics. It is primarily sought after by manufacturers in the textile, ink, and specialty coatings industries for producing high-performance colorants.

Application

• Textile Dye Synthesis: A key intermediate for producing high-grade, wash-fast azo dyes for synthetic and natural fibers.
• Industrial Pigment Manufacturing: Used in the creation of organic pigments for plastics, paints, and inks requiring specific hue and stability.
• Specialty Ink Formulation: Essential for developing colorants in high-performance printing inks, including packaging and security inks.
• Research & Development: Serves as a valuable building block in chemical research for novel chromophores and functional materials.
• Analytical Chemistry: Can be utilized as a reagent or standard in colorimetric analysis and detection methods.

Basic Information

Product Name	5-[[2,4-Dihydroxy-3-[(4-Nitrophenyl)Azo]Phenyl]Azo]-4-Hydroxy-3-[(2-Hydroxy-5-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	85959-22-4
Molecular Formula	C34H22N8O14S2
Molecular Weight	854.72 g/mol
Synonyms	Acid Black 210; C.I. 300310; 5-[(2,4-Dihydroxy-3-[(4-nitrophenyl)azo]phenyl)azo]-4-hydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]naphthalene-2,7-disulfonic acid; 2,7-Naphthalenedisulfonic acid, 5-[[2,4-dihydroxy-3-[(4-nitrophenyl)azo]phenyl]azo]-4-hydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]-; C.I. Acid Black 210; Azo Dye Intermediate 85959-22-4; Trisazo dye intermediate
EINECS	Contact for details

Quality Control

Our production of 5-[[2,4-Dihydroxy-3-[(4-Nitrophenyl)Azo]Phenyl]Azo]-4-Hydroxy-3-[(2-Hydroxy-5-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color value, and chemical identity, meeting the exacting standards required for industrial dye synthesis. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be opaque or stored in darkness to prevent degradation.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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