Description

Disodium 5-[(2,4-Dihydroxyphenyl)Azo]-4-Hydroxy-3-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]Naphthalene-2,7-Disulphonate is a high-purity, synthetic azo dye intermediate known for its complex molecular structure and specific chromophoric properties. This compound is critical for manufacturers requiring precise colorants and advanced functional dyes with consistent batch-to-batch performance. It is primarily utilized by the specialty chemical, textile dyeing, and advanced materials sectors for research and production.

Application

• As a key intermediate in the synthesis of high-performance azo dyes and pigments for textiles and inks.
• In the research and development of functional dyes for optical applications and sensors.
• For laboratory use as a chemical reference standard in analytical method development and quality control.
• In the formulation of specialized colorants for non-textile applications such as coatings and plastics.
• As a potential intermediate for dyes used in biological staining and histology.

Basic Information

Product Name	Disodium 5-[(2,4-Dihydroxyphenyl)Azo]-4-Hydroxy-3-[(2-Hydroxy-3,5-Dinitrophenyl)Azo]Naphthalene-2,7-Disulphonate
CAS No.	85136-42-1
Molecular Formula	C22H12N6Na2O14S2
Molecular Weight	702.47 g/mol
Synonyms	Disodium 5-[(2,4-dihydroxyphenyl)azo]-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]naphthalene-2,7-disulfonate; C.I. 26905; Acid Black 107; Azo Black 107; 2,7-Naphthalenedisulfonic acid, 5-[(2,4-dihydroxyphenyl)azo]-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]-, disodium salt; Disodium 5-[(2,4-dihydroxyphenyl)hydrazinylidene]-4-hydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)hydrazinylidene]naphthalene-2,7-disulfonate
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Every batch is analyzed to confirm identity, purity, and consistency. Certificates of Analysis (COA) detailing specific test results are available upon request to support your quality assurance and regulatory needs.

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 such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark colored powder
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.