Description

Disodium 4-Amino-3-[[4'-[(2-Amino-6-Sulphonatonaphthyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-1-Sulphonate is a high-purity, disazo-based dye intermediate of significant commercial importance. This compound is valued for its ability to impart a strong, stable color and is a critical precursor in the synthesis of specialized dyes and pigments. It is primarily sought by manufacturers in the textile, leather, and specialty ink industries who require consistent quality and reliable supply chains for their production processes.

Application

• Textile Dyeing: A key intermediate for producing high-grade, wash-fast azo dyes for cotton, wool, and synthetic fibers.
• Leather Finishing: Used in the synthesis of pigments and dyes for coloring leather goods with excellent light and rub fastness.
• Specialty Inks: Serves as a precursor for manufacturing pigments used in high-performance inks for packaging and security printing.
• Paper Coloring: Employed in the production of dyes for specialty paper products requiring vibrant and stable coloration.
• Research & Development: Utilized as a standard or building block in chemical research for developing new colorants and functional materials.

Basic Information

Product Name	Disodium 4-Amino-3-[[4'-[(2-Amino-6-Sulphonatonaphthyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-1-Sulphonate
CAS No.	6598-56-7
Molecular Formula	C40H28N6Na2O8S2
Molecular Weight	846.78 g/mol
Synonyms	Acid Red 299; C.I. 18130; Disodium 4-amino-3-{[4'-({2-amino-6-sulfonato-1-naphthalenyl}azo)-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo}-1-naphthalenesulfonate; 2-Naphthalenesulfonic acid, 4-amino-3-((4'-((2-amino-6-sulfo-1-naphthalenyl)azo)-3,3'-dimethyl(1,1'-biphenyl)-4-yl)azo)-, disodium salt; C.I. Acid Red 299; Azo Rubine S-BL; Leather Red S-BL
EINECS	Contact for details

Quality Control

Our Disodium 4-Amino-3-[[4'-[(2-Amino-6-Sulphonatonaphthyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-1-Sulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color strength, and impurity profiles. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (HPLC/UV-Vis)	Conforms
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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