Description

2-Hydroxy-5-Nitrobenzenesulphonic Acid is a versatile aromatic sulfonic acid derivative, primarily valued as a key intermediate in the synthesis of dyes, pigments, and specialty chemicals. Its molecular structure, featuring both a phenolic hydroxyl and a nitro group, makes it a critical building block for creating complex colorants and functional materials. This compound is essential for manufacturers in the dye and pigment industry, as well as for research and development in fine chemical synthesis.

Application

• Dye and Pigment Intermediate: A crucial precursor in the manufacture of azo dyes, acid dyes, and other complex colorants.
• Chemical Synthesis: Serves as a building block for synthesizing specialty chemicals, including pharmaceuticals and agrochemical intermediates.
• Corrosion Inhibitor Formulation: Used in the development of specialized corrosion inhibitors for industrial applications.
• Photographic Chemicals: Employed in the production of certain light-sensitive compounds for photographic applications.
• Research & Development: Utilized in academic and industrial R&D labs for novel material and organic synthesis projects.
• Metal Treatment Processes: Acts as a component in plating baths and surface treatment solutions.

Basic Information

Product Name	2-Hydroxy-5-Nitrobenzenesulphonic Acid
CAS No.	616-59-1
Molecular Formula	C6H5NO6S
Molecular Weight	219.17 g/mol
Synonyms	5-Nitro-2-hydroxybenzenesulfonic acid; 5-Nitrosalicylsulfonic acid; 2-Hydroxy-5-nitrobenzenesulfonic acid; 5-Nitro-2-phenolsulfonic acid; 5-Nitrosalicylic acid sulfonic acid; 2-Phenol-5-nitro sulfonic acid; 5-Nitrosalicylsulfonate; 5-Nitrosalicylsulphonic acid
EINECS	210-488-2

Quality Control

Our 2-Hydroxy-5-Nitrobenzenesulphonic Acid is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and batch-to-batch consistency.

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 product is hygroscopic (moisture-sensitive) and a strong acid; ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture and store away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to brown 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.