Description

2-Aminophenol Hemisulfate is a high-purity organic salt derivative of 2-aminophenol, valued for its enhanced stability and handling properties compared to the free base. This compound serves as a critical synthetic intermediate and building block in advanced chemical manufacturing. It is essential for research and production in the pharmaceutical, agrochemical, and specialty dye industries, where consistent quality and reliable supply are paramount.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of various active pharmaceutical ingredients (APIs), including certain analgesics and heterocyclic compounds.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Serves as a building block for azo dyes and other complex colorants.
• Chemical Research & Development: A valuable reagent for organic synthesis, particularly in the formation of oxygen- and nitrogen-containing heterocycles.
• Photographic Chemicals: Used in the formulation of certain photographic developers and specialty imaging agents.
• Polymer Industry: Can act as a monomer or modifier in the synthesis of specialty polymers and resins.

Basic Information

Product Name	2-Aminophenol Hemisulfate
CAS No.	67845-79-8
Molecular Formula	C6H7NO • ½H2SO4
Molecular Weight	172.16 g/mol (for the salt)
Synonyms	2-Aminophenol Sulfate (1:0.5); 2-Aminophenol, sulfate (1:?); o-Aminophenol Hemisulfate; 2-Hydroxyaniline Hemisulfate; 1-Amino-2-hydroxybenzene Hemisulfate; 2-Amino-1-hydroxybenzene Hemisulfate; BAS 02292501
EINECS	Contact for details

Quality Control

Our 2-Aminophenol Hemisulfate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets stringent specifications for identity, purity, and impurity profiles. We provide full traceability and Certificates of Analysis (COA) are available for all shipments to guarantee compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed to prevent degradation from moisture and light exposure.

Specification

Item	Specification
Appearance	White to light tan crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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