Description

Disodium 2,4-Dimethoxy-5-[(E)-3-(4-Methoxy-3-Sulfonato-Phenyl)Prop-2-E Noyl]Benzenesulfonate is a high-purity, water-soluble anionic dye intermediate and functional chemical. It matters for its role as a key precursor in the synthesis of advanced colorants, offering excellent chromophore properties and stability for demanding applications. This product is essential for manufacturers in the specialty dyes, pigments, and advanced material sectors who require consistent quality and reliable supply for their production processes.

Application

• Primary Intermediate for Reactive Dyes: A critical building block in the synthesis of high-performance reactive dyes for textiles, particularly for cotton and cellulose fibers.
• Functional Dye Synthesis: Used in the production of specialized dyes for ink-jet printing, LCD color filters, and other electronic display applications.
• Research & Development: Serves as a key starting material in academic and industrial R&D for novel chromophores and photoactive compounds.
• Fine Chemical Production: Employed in the multi-step synthesis of complex organic molecules requiring a specific, sulfonated aromatic structure.
• Analytical Chemistry: Can be utilized as a standard or reference compound in chromatographic analysis and method development for dye-related products.

Basic Information

Product Name	Disodium 2,4-Dimethoxy-5-[(E)-3-(4-Methoxy-3-Sulfonato-Phenyl)Prop-2-E Noyl]Benzenesulfonate
CAS No.	30056-74-7
Molecular Formula	C24H20Na2O12S2
Molecular Weight	618.51 g/mol
Synonyms	Disodium 2,4-dimethoxy-5-[(1E)-3-(4-methoxy-3-sulfonatophenyl)-2-propenoyl]benzenesulfonate; 2,4-Dimethoxy-5-[(E)-3-(4-methoxy-3-sulfonatophenyl)acryloyl]benzenesulfonic acid disodium salt; C.I. Reactive Yellow 145 intermediate; Reactive Yellow 145 precursor; 5-[(E)-3-(4-Methoxy-3-sulfophenyl)-2-propenoyl]-2,4-dimethoxybenzenesulfonic acid disodium salt; Benzenesulfonic acid, 2,4-dimethoxy-5-[(1E)-3-(4-methoxy-3-sulfophenyl)-1-oxo-2-propen-1-yl]-, sodium salt (1:2)
EINECS	Contact for details

Quality Control

Our Disodium 2,4-Dimethoxy-5-[(E)-3-(4-Methoxy-3-Sulfonato-Phenyl)Prop-2-E Noyl]Benzenesulfonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive synthesis processes. Certificates of Analysis (COA) documenting batch-specific results 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, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility (in Water)	Clear, yellow solution

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