Description

3-[(4-Amino-2,5-Dimethoxyphenyl)Azo]-4-Hydroxybenzenesulphonic Acid is a specialized azo dye intermediate with a distinct molecular structure that provides excellent chromophoric properties. This compound is critical for synthesizing high-value, color-fast dyes and pigments used in demanding industrial applications. It is primarily sought after by manufacturers in the textile, ink, and specialty chemical sectors who require precise and reliable intermediates for producing vibrant and stable colors.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile coloring.
• Key precursor in manufacturing specialty inks for packaging and security printing applications.
• Used in the production of colorants for plastics and polymers to achieve specific hues.
• Employed in research and development of novel photographic and imaging chemicals.
• Potential use as a reagent or standard in analytical chemistry for method development.
• Intermediate for creating functional dyes used in non-textile applications such as lasers or optical sensors.

Basic Information

Product Name	3-[(4-Amino-2,5-Dimethoxyphenyl)Azo]-4-Hydroxybenzenesulphonic Acid
CAS No.	85895-89-2
Molecular Formula	C14H14N4O6S
Molecular Weight	366.35 g/mol
Synonyms	4-Hydroxy-3-[(4-amino-2,5-dimethoxyphenyl)azo]benzenesulfonic acid; C.I. 37175; Benzenesulfonic acid, 3-[(4-amino-2,5-dimethoxyphenyl)azo]-4-hydroxy-; Acid Red 249; 3-[(4-Amino-2,5-dimethoxyphenyl)azo]-4-hydroxybenzenesulfonic acid; 4-Amino-2,5-dimethoxyazobenzene-4'-sulfonic acid
EINECS	Contact for details

Quality Control

Our production of 3-[(4-Amino-2,5-Dimethoxyphenyl)Azo]-4-Hydroxybenzenesulphonic Acid adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against comprehensive specifications using advanced techniques like HPLC and spectroscopy. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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