Description

3-Aminophenol Hemisulfate is an important organic intermediate and salt form of 3-aminophenol, offering enhanced stability and handling properties. This compound is valued for its role as a versatile building block in the synthesis of more complex molecules, particularly in the pharmaceutical and dye industries. It is primarily sought by manufacturers in the fine chemical, agrochemical, and research sectors for the production of active pharmaceutical ingredients (APIs), photographic chemicals, and specialized dyes.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of various active pharmaceutical ingredients (APIs) and diagnostic agents.
• Dye and Pigment Manufacturing: Used in the production of azo dyes and other colorants for textiles, inks, and plastics.
• Agrochemical Synthesis: Serves as a building block for certain herbicides, fungicides, and plant growth regulators.
• Photographic Chemical: Employed in the formulation of specific developers and other photographic processing chemicals.
• Research & Development: Utilized in organic synthesis and chemical research for creating novel compounds and materials.
• Polymer Modification: Acts as a monomer or modifier in the production of specialty polymers and resins.

Basic Information

Product Name	3-Aminophenol Hemisulfate
CAS No.	68239-81-6
Molecular Formula	C6H7NO • ½H2SO4
Molecular Weight	176.17 g/mol (for hemisulfate salt)
Synonyms	3-Aminophenol sulfate (1:0.5); m-Aminophenol hemisulfate; 3-Hydroxyaniline hemisulfate; 3-Aminophenol, sulfate (2:1); m-Aminophenol sulfate; 1-Amino-3-hydroxybenzene hemisulfate; Metaminophenol hemisulfate; BAS 02292509
EINECS	Contact for details

Quality Control

Our 3-Aminophenol Hemisulfate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. We provide Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, related substances, and residual solvents. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring reliable and consistent material for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.1%
Heavy Metals	≤ 20 ppm

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