Description

Amino-R Acid CAS NO 92-28-4 is a specialized aromatic amine derivative, recognized for its role as a versatile intermediate in fine chemical synthesis. Its molecular structure makes it a valuable precursor for creating complex molecules, particularly in the production of dyes, pigments, and advanced functional materials. This product is essential for manufacturers and R&D laboratories in the chemical, pharmaceutical, and agrochemical sectors seeking reliable, high-purity building blocks for their processes.

Application

• Dye and Pigment Intermediate: A key starting material in the synthesis of azo dyes, acid dyes, and other colorants for textiles, inks, and plastics.
• Pharmaceutical Synthesis: Used as a building block in the manufacture of active pharmaceutical ingredients (APIs) and other fine chemicals.
• Agrochemical Production: Serves as an intermediate in the formulation of certain herbicides, pesticides, and plant growth regulators.
• Polymer and Resin Modifier: Incorporated into polymer chains to modify properties such as adhesion, thermal stability, or UV resistance.
• Research & Development: Utilized in academic and industrial labs for developing new organic compounds and materials science applications.
• Photographic Chemicals: Can be employed in the synthesis of chemicals used in photographic development processes.

Basic Information

Product Name	Amino-R Acid
CAS No.	92-28-4
Molecular Formula	C14H13NO3S
Molecular Weight	275.32 g/mol
Synonyms	2-Amino-5-(phenylamino)benzenesulfonic acid; 4-Amino-4'-aminodiphenylamine-2-sulfonic acid; N-Phenyl-1,4-phenylenediamine-2-sulfonic acid; 1,4-Dianilino-2-sulfonic acid; Amino R Acid; Amido R Acid; C.I. 37100; Developer R
EINECS	202-138-8

Quality Control

Our Amino-R Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for industrial and research applications. A detailed Certificate of Analysis (COA) is provided with each shipment, guaranteeing traceability and consistent quality. We adhere to relevant ISO and GMP guidelines where applicable to support our global customer base.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its light-sensitive nature and tendency to be easily oxidized, it is recommended to store the material under an inert atmosphere (e.g., nitrogen) for long-term preservation and to minimize degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light gray to brown powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual ≤ 0.5%, Total ≤ 1.5%

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