Description

Disodium 4-Amino-5-Hydroxy-3-[[4-[5-[(4-Hydroxyphenyl)Azo]-1H-Benzimidazol-2-Yl]Phenyl]Azo]-6-(Phenylazo)Naphthalene-2,7-Disulphonate is a high-purity, synthetic organic dye belonging to the class of azo dyes containing a benzimidazole moiety. This compound is valued for its excellent color strength, stability, and specific affinity for various substrates, making it a critical component in advanced coloration processes. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking consistent, high-performance pigments.

Application

• Textile Dyeing: Used as a key dye for synthetic fibers like polyamide (nylon) and polyester, providing vibrant and wash-fast colors.
• Ink Formulation: Serves as a pigment in the production of high-quality printing inks for packaging and commercial printing.
• Specialty Coatings: Incorporated into industrial and automotive coatings where specific colorimetric properties and durability are required.
• Plastics and Polymers: Employed for mass coloration of plastics to achieve uniform and stable hues.
• Research & Development: Used as a standard or intermediate in the synthesis of novel dyes and functional materials.
• Leather Finishing: Applied in dyeing processes for leather goods to achieve deep, uniform coloration.

Basic Information

Product Name	Disodium 4-Amino-5-Hydroxy-3-[[4-[5-[(4-Hydroxyphenyl)Azo]-1H-Benzimidazol-2-Yl]Phenyl]Azo]-6-(Phenylazo)Naphthalene-2,7-Disulphonate
CAS No.	93803-37-3
Molecular Formula	C41H26N10Na2O11S2
Molecular Weight	960.87 g/mol
Synonyms	Acid Black 234; C.I. 30038; Disodium 4-amino-5-hydroxy-3,6-bis[[4-[5-[(4-hydroxyphenyl)azo]-1H-benzimidazol-2-yl]phenyl]azo]naphthalene-2,7-disulphonate; Benzimidazolyl Azo Dye; Azo Benzimidazole Dye; 93803-37-3; Black 234
EINECS	Contact for details

Quality Control

Our production of Disodium 4-Amino-5-Hydroxy-3-[[4-[5-[(4-Hydroxyphenyl)Azo]-1H-Benzimidazol-2-Yl]Phenyl]Azo]-6-(Phenylazo)Naphthalene-2,7-Disulphonate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure compliance with industry specifications for purity, color strength, and impurity profiles. Certificates of Analysis (COA) documenting key parameters 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). This material is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); protect from excessive humidity and direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	≤ 5.0%
Ash Content	≤ 1.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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