Description

1,3-Benzenedicarboxylic Acid, 5-4-(7-Amino-1-Hydroxy-3-Sulfo-2-Naphthalenyl)Azo-6-Sulfo-1-Naphthalenylazo-, Tetraammonium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart specific color properties and chemical reactivity in advanced synthesis processes. It is primarily required by manufacturers in the dye and pigment, textile, and specialty chemical industries for producing high-performance colorants.

Application

• Key intermediate for the synthesis of high-grade, complex azo dyes and pigments.
• Used in the coloration of textiles, leather, and paper products.
• Employed in the manufacturing of inks for various printing applications.
• Acts as a functional intermediate in the production of specialty chemicals and research compounds.
• Potential use as a colorant or marker in analytical chemistry and laboratory research.
• Serves as a starting material for creating customized color formulations with specific lightfastness and solubility properties.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, 5-4-(7-Amino-1-Hydroxy-3-Sulfo-2-Naphthalenyl)Azo-6-Sulfo-1-Naphthalenylazo-, Tetraammonium Salt
CAS No.	128351-36-0
Molecular Formula	C27H28N8O12S2 · 4NH3 (or C27H40N12O12S2)
Molecular Weight	Contact for details
Synonyms	5-[[4-[(7-Amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-6-sulfo-1-naphthalenyl]azo]isophthalic Acid Tetraammonium Salt; Tetraammonium 5-((4-((7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)-6-sulphonato-1-naphthyl)azo)isophthalate; Azo Dye Intermediate 128351-36-0; Isophthalic Acid Azo Derivative Tetraammonium Salt; CI Direct Blue 199 Intermediate (related); Complex Azo Dye Salt; Water-Soluble Azo Compound; 1,3-Benzenedicarboxylic acid azo dye salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high chemical purity. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance 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 product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content (KF)	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Solubility (in Water)	Freely soluble

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