Description

3-Isothiocyanatobenzenesulfonic Acid Sodium Salt is a versatile organic intermediate and reagent characterized by its reactive isothiocyanate and sulfonate functional groups. This compound is valued for its role as a key building block in the synthesis of more complex molecules, particularly in the development of dyes, pigments, and specialized chemical probes. It is primarily sought after by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for creating sulfonated derivatives with targeted properties.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and diagnostic agents, particularly those requiring sulfonated or thiourea linkages.
• Agrochemical Synthesis: Serves as a precursor for herbicides, fungicides, and plant growth regulators that benefit from the sulfonic acid group's solubility and bioactivity.
• Dye and Pigment Manufacturing: A key intermediate for producing sulfonated azo dyes and other colorants, enhancing water solubility and fiber affinity.
• Bioconjugation and Labeling Reagent: Utilized in biochemical research to modify proteins, peptides, and other biomolecules via reaction with amine groups.
• Polymer Modification: Employed to introduce reactive sites or anionic character into polymers for specialty coatings and ion-exchange resins.
• Chemical Research & Development: Acts as a versatile building block in organic synthesis for creating libraries of novel compounds in medicinal and materials chemistry.

Basic Information

Product Name	3-Isothiocyanatobenzenesulfonic Acid Sodium Salt
CAS No.	3529-77-9
Molecular Formula	C7H4NNaO3S2
Molecular Weight	237.23 g/mol
Synonyms	Benzenesulfonic acid, 3-isothiocyanato-, sodium salt; Sodium 3-isothiocyanatobenzenesulfonate; m-Isothiocyanatobenzenesulfonic acid sodium salt; 3-Isothiocyanatobenzenesulfonate sodium; Sodium m-isothiocyanatobenzenesulfonate; 3-(Isothiocyanato)benzenesulfonic acid sodium salt; Meta-isothiocyanatobenzenesulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our 3-Isothiocyanatobenzenesulfonic Acid Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and physical characteristics are available upon request, supporting compliance in regulated applications.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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