Description

p-Anisidine-3-Sulfonic Acid is a key aromatic sulfonic acid derivative, serving as a vital intermediate in the synthesis of complex organic molecules. Its value lies in its bifunctional nature, combining a reactive aniline group with a sulfonic acid moiety, which facilitates its use in creating dyes, pigments, and specialty chemicals. This compound is essential for manufacturers and R&D laboratories in the dyestuff, pharmaceutical, and agrochemical sectors seeking high-purity intermediates for advanced synthesis.

Application

• Dye and Pigment Intermediate: A crucial building block for the synthesis of azo dyes, acid dyes, and other colorants, particularly where light-fastness and specific hue properties are required.
• Pharmaceutical Synthesis: Used as a versatile intermediate in the production of certain active pharmaceutical ingredients (APIs) and fine chemicals.
• Agrochemical Manufacturing: Employed in the synthesis of herbicides, pesticides, and plant growth regulators.
• Chemical Research & Development: Serves as a valuable reagent for organic synthesis and methodological studies in academic and industrial R&D settings.
• Specialty Chemical Production: Utilized in the manufacture of corrosion inhibitors, flocculants, and other functional chemicals.
• Photographic Chemical: Can be used in the synthesis of certain photographic developers and sensitizers.

Basic Information

Product Name	p-Anisidine-3-Sulfonic Acid
CAS No.	13244-33-2
Molecular Formula	C7H9NO4S
Molecular Weight	203.21 g/mol
Synonyms	3-Amino-4-methoxybenzenesulfonic Acid; 4-Methoxy-3-aminobenzenesulfonic Acid; 4-Methoxy-3-anilinesulfonic Acid; 3-Amino-4-methoxybenzene-1-sulfonic Acid; p-Methoxyaniline-3-sulfonic Acid; 2-Methoxy-5-aminobenzenesulfonic Acid; 5-Amino-2-methoxybenzenesulfonic Acid; Anisidine Sulfonic Acid
EINECS	Contact for details

Quality Control

Our p-Anisidine-3-Sulfonic Acid is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing results from HPLC, IR, and titration methods is provided with every shipment, ensuring full traceability and compliance with your quality requirements.

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). The product is moisture-sensitive; keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture. Keep away from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Sulfated Ash	≤ 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.