Description

7-[(4-Amino-5-Methoxy-o-Tolyl)Azo]Naphthalene-1,3-Disulphonic Acid, Lithium Sodium Salt is a high-purity, water-soluble azo dye intermediate with excellent colorant properties. This compound is valued for its ability to impart vibrant and stable hues, making it a critical component in the synthesis of specialized dyes and pigments. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking consistent and reliable color performance.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance, water-soluble azo dyes for textiles and fibers.
• Specialty Ink Formulations: Used in the production of inks for packaging, security printing, and digital applications requiring specific color fastness.
• Industrial Pigments: Acts as a precursor for manufacturing pigments used in plastics, paints, and specialty coatings.
• Research & Development: Employed in chemical research for developing novel chromophores and studying dye-sensitized processes.
• Paper Coloring: Suitable for applications in high-grade paper and decorative laminate production.
• Biological Staining: Potential use as a staining agent in histological and microbiological applications due to its azo structure.

Basic Information

Product Name	7-[(4-Amino-5-Methoxy-o-Tolyl)Azo]Naphthalene-1,3-Disulphonic Acid, Lithium Sodium Salt
CAS No.	75198-79-7
Molecular Formula	C18H15LiN4NaO7S2
Molecular Weight	477.33 g/mol
Synonyms	Lithium Sodium 7-[(4-Amino-5-methoxy-2-methylphenyl)azo]naphthalene-1,3-disulfonate; 7-[(4-Amino-5-methoxy-o-tolyl)azo]-1,3-naphthalenedisulfonic acid lithium sodium salt; C.I. Acid Red 249; Azo Dye Intermediate 75198-79-7; 1,3-Naphthalenedisulfonic acid, 7-[(4-amino-5-methoxy-2-methylphenyl)azo]-, lithium sodium salt; Lithium sodium 4-amino-5-methoxy-o-tolylazonaphthalene-1,3-disulfonate
EINECS	Contact for details

Quality Control

Our production of 7-[(4-Amino-5-Methoxy-o-Tolyl)Azo]Naphthalene-1,3-Disulphonic Acid, Lithium Sodium Salt adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. All material is subjected to comprehensive analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) documenting identity, purity, and key specifications are provided with every shipment to support your quality assurance processes.

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). Keep away from strong oxidizing agents. The product is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 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.