Description

6,8-Dianilinonaphthalene-1-Sulphonic Acid is a specialized aromatic sulfonic acid derivative that serves as a key intermediate in the synthesis of advanced organic compounds. Its unique naphthalene-based structure with dual anilino substituents makes it valuable for creating dyes, pigments, and functional materials with specific optical and electronic properties. This high-purity intermediate is essential for manufacturers in the fine chemical, dye, and advanced material research sectors seeking reliable and consistent raw materials for complex synthesis.

Application

• Dye and Pigment Intermediate: A crucial building block for the synthesis of specific azo dyes, acid dyes, and complex organic pigments, particularly those requiring high color strength and stability.
• Functional Material Synthesis: Used in research and production of organic semiconductors, charge-transport materials, and other advanced electronic materials due to its conjugated aromatic system.
• Chemical Research & Development: Serves as a versatile starting material or reagent in organic synthesis for pharmaceuticals, agrochemicals, and specialty chemicals.
• Analytical Chemistry: Can be employed as a reagent or standard in chromatographic analysis and other laboratory procedures.
• Photographic Chemicals: Potential use in the formulation of certain photographic chemicals and sensitizers.

Basic Information

Product Name	6,8-Dianilinonaphthalene-1-Sulphonic Acid
CAS No.	129-93-1
Molecular Formula	C22H18N2O3S
Molecular Weight	390.45 g/mol
Synonyms	6,8-Bis(anilino)naphthalene-1-sulfonic acid; 1-Naphthalenesulfonic acid, 6,8-bis(phenylamino)-; 6,8-Dianilino-1-naphthalenesulfonic acid; Dianilinonaphthalenesulfonic acid; C.I. 10316; Acid Yellow 36 (related dye class); 6,8-Bis(phenylamino)naphthalene-1-sulfonic acid
EINECS	204-963-4

Quality Control

Our 6,8-Dianilinonaphthalene-1-Sulphonic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, IR for identification, and loss on drying, to ensure it meets exacting specifications for use in sensitive applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from strong oxidizing agents and strong bases. The material is light-sensitive; prolonged exposure to light should be avoided.

Specification

Item	Specification
Appearance	Yellow to brownish powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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