2-Chloro-5-nitrobenzenesulfonic Acid
- CAS No.96-73-1
- GradeIndustrial / Pharmaceutical
- Availability● In Stock
High-purity 2-Chloro-5-nitrobenzenesulfonic acid (CAS 96-73-1), a key intermediate for herbicides like Cinosulfuron and specialty dyes such as Blue Salt B.
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Product Overview
2-Chloro-5-nitrobenzenesulfonic acid is a high-value aromatic sulfonic acid derivative widely employed in the agrochemical and dye manufacturing industries. With a molecular formula of C6H4ClNO5S and a molecular weight of 237.62 g/mol, this compound serves as a critical building block in the synthesis of advanced herbicidal agents and colorants. Its robust chemical structure enables selective electrophilic substitution and coupling reactions, making it indispensable in multi-step organic syntheses.
Specifications
| Molecular Formula | C6H4ClNO5S |
|---|---|
| Molecular Weight | 237.618 g/mol |
| Exact Mass | 236.949875 |
| Density | 1.7 ± 0.1 g/cm³ |
| Melting Point | >300°C |
| LogP | 1.10 |
| PSA | 108.57 |
| Refractive Index | 1.623 |
| Appearance | Yellow crystalline powder |
| Assay (Purity) | ≥99.0% |
| Loss on Drying | ≤0.5% |
Industrial Applications
This compound is primarily utilized as a synthetic intermediate in the production of the sulfonylurea herbicide Cinosulfuron (CAS 94593-91-6). Its chloro and nitro functional groups facilitate regioselective transformations essential for constructing the herbicidal core structure. Additionally, 2-Chloro-5-nitrobenzenesulfonic acid plays a pivotal role in the dye industry, where it is used to manufacture high-performance azo dye intermediates including Blue Salt B, Blue Salt RT, and p-nitroaniline o-sulfonic acid. These derivatives are integral to producing vibrant, stable shades for textile and pigment applications.
As a non-terminal, non-formulation-ready chemical, it is classified as a specialty intermediate intended exclusively for industrial-scale synthesis under controlled conditions.
Handling and Storage
Store in a cool, dry, and well-ventilated area. Keep container tightly closed and protected from moisture. Refrigeration is recommended to maintain long-term stability. Standard industrial hygiene practices should be followed during handling.
Packaging
Standard packaging is 25 kg per fiber drum. Custom packaging solutions are available upon request to meet specific logistical or regulatory requirements.
