Description

3-[[5-(Benzoylamino)-6-Hydroxy-3-Methylphenyl]Azo]-2-Hydroxy-5-Nitrobenzenesulfonic Acid is a specialized azo dye intermediate and organic synthesis building block, valued for its complex molecular structure that imparts specific chromophoric and functional properties. This compound is critical for manufacturers requiring high-purity, consistent intermediates to produce advanced colorants and functional chemicals. It is primarily sought by the dye and pigment industry, as well as research institutions focused on developing novel materials and analytical reagents.

Application

• Key intermediate in the synthesis of high-performance azo dyes and pigments for textiles, inks, and coatings.
• Precursor for the manufacture of specialized colorants for plastics and polymers.
• Used in research and development of functional dyes for non-textile applications, such as sensors or optical materials.
• Potential use as a complexing agent or analytical reagent in laboratory settings due to its sulfonic acid and azo groups.
• Building block for creating customized chemical entities in pharmaceutical and agrochemical research.

Basic Information

Product Name	3-[[5-(Benzoylamino)-6-Hydroxy-3-Methylphenyl]Azo]-2-Hydroxy-5-Nitrobenzenesulfonic Acid
CAS No.	6109-98-4
Molecular Formula	C20H15N4O8S
Molecular Weight	471.42 g/mol
Synonyms	Benzenesulfonic acid, 3-[[5-(benzoylamino)-6-hydroxy-3-methylphenyl]azo]-2-hydroxy-5-nitro-; 3-[(5-Benzamido-6-hydroxy-3-methylphenyl)azo]-2-hydroxy-5-nitrobenzenesulfonic acid; C.I. 18055; Acid Orange 33 (principal component); C.I. Acid Orange 33; 2-Hydroxy-5-nitro-3-[(5-benzoylamino-6-hydroxy-3-methylphenyl)azo]benzenesulfonic acid; 3-[(5-Benzoylamino-6-hydroxy-m-tolyl)azo]-2-hydroxy-5-nitrobenzenesulfonic acid
EINECS	Contact for details

Quality Control

Our production of 3-[[5-(Benzoylamino)-6-Hydroxy-3-Methylphenyl]Azo]-2-Hydroxy-5-Nitrobenzenesulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. All materials undergo rigorous analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) documenting identity, purity, and related substances are available for every shipment 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 controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility	Soluble in alkaline aqueous solutions

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