Description

4.4'-Diaminodiphenylaminesulfate is a high-purity, fine chemical intermediate primarily used in the synthesis of advanced dyes and pigments. Its value lies in its role as a critical building block for creating complex aromatic structures with specific color and stability properties. This compound is essential for manufacturers in the dyestuff, polymer, and specialty chemical industries seeking reliable and consistent raw materials for high-performance applications.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of high-grade azo and sulfur dyes, contributing to color fastness and vibrancy.
• Polymer Industry: Used as a monomer or cross-linking agent in the production of specialty polyimides and other high-temperature resistant polymers.
• Chemical Synthesis: Serves as a versatile building block for pharmaceuticals, agrochemicals, and other complex organic compounds requiring diamine functionalities.
• Antioxidant Production: An intermediate in the manufacture of antioxidant agents for rubber and polymer stabilization.
• Research & Development: Utilized in academic and industrial R&D labs for developing new materials and catalytic systems.
• Photographic Chemicals: Employed in the synthesis of certain photographic developers and sensitizers.

Basic Information

Product Name	4.4'-Diaminodiphenylaminesulfate
CAS No.	6369-04-6
Molecular Formula	C12H14N4O4S
Molecular Weight	310.33 g/mol
Synonyms	4,4'-Diaminodiphenylamine sulfate; N,N'-Diphenyl-p-phenylenediamine sulfate; DADPA sulfate; p,p'-Diaminodiphenylamine sulfate; 1,4-Dianilino-benzene sulfate; Benzidine derivative sulfate; C.I. Oxidation Base 12 (salt); Contact for EINECS details.

Quality Control

Our 4.4'-Diaminodiphenylaminesulfate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise purity and consistency standards. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics are provided and 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 room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Light gray to brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 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.