Description

p-Phenylazobenzenesulfonic Acid is an azo dye intermediate and analytical reagent characterized by its sulfonic acid functional group. This compound is valued for its role in synthesizing specific dyes, pigments, and colorants, as well as its utility in certain chemical research and development processes. It is primarily sought by manufacturers in the dye and pigment industry, research laboratories, and specialty chemical producers for applications requiring this specific aromatic sulfonic acid structure.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes and organic pigments, contributing to color development and stability.
• Analytical Chemistry Reagent: Used as a reagent or standard in specific analytical methods and research studies.
• Chemical Synthesis Building Block: Employed in organic synthesis to introduce the phenylazobenzenesulfonate moiety into more complex molecules.
• Research & Development: Utilized in laboratory-scale R&D for developing new materials, sensors, or specialty chemicals.
• Textile Industry: May be involved in processes for dyeing synthetic or natural fibers.

Basic Information

Product Name	p-Phenylazobenzenesulfonic Acid
CAS No.	2484-88-0
Molecular Formula	C12H10N2O3S
Molecular Weight	262.29 g/mol
Synonyms	4-Phenylazobenzenesulfonic Acid; Benzenesulfonic acid, 4-(phenylazo)-; p-(Phenylazo)benzenesulfonic Acid; 4-(Phenylazo)benzenesulfonic Acid; Azobenzene-4-sulfonic Acid; C.I. 13080; Acid Yellow 36 (related dye); Phenylazobenzene-p-sulfonic Acid
EINECS	219-639-5

Quality Control

Our p-Phenylazobenzenesulfonic Acid is produced and tested under a stringent quality management system. Each batch undergoes comprehensive analysis to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your project requirements.

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) and light-sensitive; containers must be kept tightly sealed to minimize exposure to atmospheric moisture and light to maintain stability and purity.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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