Description

(8E)-7-Oxo-8-[(4-Sulfophenyl)Hydrazinylidene]Naphthalene-1,3-Disulfonic Acid is a high-purity, polyfunctional aromatic sulfonic acid derivative. This compound is valued for its role as a key synthetic intermediate and chromophore in advanced chemical manufacturing. It is primarily utilized by industries focused on the production of specialized dyes, analytical reagents, and functional materials.

Application

• Dye and Pigment Intermediate: A critical precursor in the synthesis of acid dyes, reactive dyes, and metal-complex pigments, particularly for textiles and inks.
• Analytical Chemistry Reagent: Used as a complexing agent or colorimetric indicator in spectrophotometric analysis and trace metal detection.
• Chemical Synthesis Building Block: Serves as a versatile intermediate for introducing sulfonic acid and hydrazone functional groups into more complex organic molecules.
• Functional Material Research: Investigated for use in the development of optical sensors, nonlinear optical (NLO) materials, and organic semiconductors.
• Laboratory Research & Development: Employed in academic and industrial R&D for studying reaction mechanisms and developing new synthetic pathways.

Basic Information

Product Name	(8E)-7-Oxo-8-[(4-Sulfophenyl)Hydrazinylidene]Naphthalene-1,3-Disulfonic Acid
CAS No.	2657-89-8
Molecular Formula	C₁₆H₁₂N₂O₁₀S₃
Molecular Weight	488.47 g/mol
Synonyms	7-Oxo-8-[(4-sulfophenyl)hydrazinylidene]naphthalene-1,3-disulfonic acid; Naphthalene-1,3-disulfonic acid, 8-[(4-sulfophenyl)hydrazono]-7-oxo-; Acid Black 1 intermediate; 2657-89-8; 8-[(4-Sulfophenyl)hydrazono]-7-oxonaphthalene-1,3-disulfonic acid; C.I. 20470 intermediate; 1,3,6-Naphthalenetrisulfonic acid, 8-hydrozonyl-7-oxo- derivative
EINECS	Contact for details

Quality Control

Our production of (8E)-7-Oxo-8-[(4-Sulfophenyl)Hydrazinylidene]Naphthalene-1,3-Disulfonic Acid adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and reliability for industrial and research applications. Certificates of Analysis (COA) documenting all specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store in a cool, dry place at a controlled room temperature (15-25°C). Ensure the storage area is well-ventilated and separate from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals	≤ 20 ppm
Sulfated Ash	≤ 0.5%

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