Description

Tetralithium 7,7'-(Carbonyldiimino)Bis[4-Hydroxy-3-[(6-Sulphonato-2-Naphthyl)Azo]Naphthalene-2-Sulphonate] is a high-purity, water-soluble lithium salt of a complex disazo dye. This compound is valued for its exceptional color strength and stability, making it a critical component in advanced industrial formulations. It is primarily sought after by manufacturers in the textile, specialty ink, and high-performance polymer industries for its reliable performance as a functional colorant.

Application

• Textile Dyeing: Used as a high-grade dye for synthetic fibers, particularly polyamide and protein fibers, offering excellent wash and light fastness.
• Inkjet Inks: Serves as a key pigment for industrial and graphic arts inks, providing vibrant color and superior jetting stability.
• Functional Polymer Additive: Incorporated into polymers and coatings to impart color and potentially other functional properties.
• Biological Staining: Employed in research and diagnostic applications as a specialized histological or cytological stain.
• Analytical Chemistry: Utilized as a reagent or indicator in specific spectrophotometric and complexometric analytical methods.
• Paper Coloring: Applied in the production of specialty colored papers and security documents.

Basic Information

Product Name	Tetralithium 7,7'-(Carbonyldiimino)Bis[4-Hydroxy-3-[(6-Sulphonato-2-Naphthyl)Azo]Naphthalene-2-Sulphonate]
CAS No.	27820-51-5
Molecular Formula	C48H22Li4N6O18S4
Molecular Weight	~1084.8 g/mol
Synonyms	Acid Black 210; C.I. 300310; Tetralithium 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-2,7-naphthalenedisulfonate]; Tetralithium 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[(6-sulfo-2-naphthalenyl)azo]-2-naphthalenesulfonate]; Direct Black 210 (Lithium salt); Lithium salt of Acid Black 210; 7,7'-(Carbonyldiimino)bis[4-hydroxy-3-[(6-sulphonato-2-naphthyl)azo]naphthalene-2-sulphonic acid], tetralithium salt
EINECS	Contact for details

Quality Control

Our production of Tetralithium 7,7'-(Carbonyldiimino)Bis[4-Hydroxy-3-[(6-Sulphonato-2-Naphthyl)Azo]Naphthalene-2-Sulphonate] adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color value, and elemental analysis, to ensure consistency and compliance with customer specifications. A detailed Certificate of Analysis (COA) is provided with each shipment, guaranteeing traceability and performance reliability for your critical applications.

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 hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5% (vs. Standard)
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
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.