Description

Sodium 2-Anilino-5-Nitrobenzenesulphonate is a high-purity organic salt widely utilized as a key intermediate in the synthesis of dyes and pigments. Its specific chemical structure makes it valuable for producing colorants with excellent lightfastness and thermal stability, which are critical for demanding industrial applications. This compound is essential for manufacturers in the textile, ink, and specialty chemical sectors seeking reliable and consistent raw materials for their production processes.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial building block in the synthesis of high-performance azo dyes for textiles and leather.
• Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics, contributing to vibrant and durable colors.
• Research & Development: Employed in chemical R&D laboratories for developing novel chromophores and functional dyes.
• Specialty Chemical Synthesis: Acts as a sulfonated intermediate in the manufacture of more complex chemical compounds for various industrial applications.

Basic Information

Product Name	Sodium 2-Anilino-5-Nitrobenzenesulphonate
CAS No.	3809-31-2
Molecular Formula	C12H9N2NaO5S
Molecular Weight	316.26 g/mol
Synonyms	2-Anilino-5-nitrobenzenesulfonic Acid Sodium Salt; Sodium 2-Anilino-5-nitrobenzenesulfonate; 5-Nitro-2-(phenylamino)benzenesulfonic Acid Sodium Salt; Benzenesulfonic acid, 2-anilino-5-nitro-, sodium salt; C.I. 37120; Acid Yellow 36 (sodium salt form).
EINECS	223-289-7

Quality Control

Our Sodium 2-Anilino-5-Nitrobenzenesulphonate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing 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 for our B2B partners.

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 to prevent absorption of atmospheric moisture.

Specification

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

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