Description

4-Hydroxy-3-Nitronaphthalene-1-Sulphonic Acid is a specialized naphthalene derivative that serves as a crucial intermediate in advanced organic synthesis. Its unique structure, featuring both nitro and sulphonic acid groups, makes it a valuable building block for creating complex molecules with specific functional properties. This compound is primarily sought after by manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries for the development of high-performance products.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and other complex colorants, particularly for textiles and inks.
• Pharmaceutical Synthesis: Used as a building block in the research and development of active pharmaceutical ingredients (APIs) and other fine chemicals.
• Agrochemical Manufacturing: Employed in the production of certain herbicides, pesticides, and plant growth regulators.
• Chemical Research & Development: Serves as a versatile intermediate in organic chemistry R&D for creating novel compounds and materials.
• Photographic Chemicals: Can be utilized in the synthesis of certain light-sensitive compounds used in photographic applications.
• Corrosion Inhibitor Formulation: Acts as a component in specialized formulations designed to prevent metal corrosion in industrial systems.

Basic Information

Product Name	4-Hydroxy-3-Nitronaphthalene-1-Sulphonic Acid
CAS No.	71735-35-8
Molecular Formula	C₁₀H₇NO₆S
Molecular Weight	269.23 g/mol
Synonyms	3-Nitro-4-hydroxy-1-naphthalenesulfonic acid; 4-Hydroxy-3-nitro-1-naphthalenesulfonic acid; 1-Naphthalenesulfonic acid, 4-hydroxy-3-nitro-; 4-Hydroxy-3-nitronaphthalenesulfonic acid; Naphthol Yellow S intermediate; Acid Yellow 1 intermediate; C.I. 10316 intermediate
EINECS	Contact for details

Quality Control

Our production of 4-Hydroxy-3-Nitronaphthalene-1-Sulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency meet exacting standards. A Certificate of Analysis (COA) detailing specific results for assay, impurities, and other critical parameters is provided with each shipment to guarantee traceability and compliance.

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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
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.