2-Naphthalene Sulfonic Acid (CAS 120-18-3): Technical Guide & Applications
Table of Contents
1. Product Overview & Specifications
| Parameter | Details |
|---|---|
| CAS No. | 120-18-3 |
| Molecular Formula | C10H8O3S |
| Molecular Weight | 208.23 g/mol |
| Synonyms | β-Naphthalenesulfonic acid, 2-Naphthalenesulfonic acid, Naphthalene-2-sulfonic acid |
| Appearance | White crystalline powder |
| Purity | ≥99% (Industrial Grade) |
| Packaging | 25 kg drums |
2. Key Applications
2-Naphthalene sulfonic acid is widely used as:
- Chemical Intermediate: For synthesizing dyes, surfactants, and pharmaceuticals.
- Corrosion Inhibitor: In cooling water systems and metal treatment.
- Textile Auxiliary: As a dispersing agent in dyeing processes.
- Electroplating Additive: To enhance surface finishing quality.
3. Usage Guidelines
Recommended Dosage: 0.5–2.0% by weight, depending on application.
Solubility: Soluble in water (hot/cold) and ethanol; insoluble in non-polar solvents.
Storage: Keep in a cool, dry place away from oxidizing agents. Shelf life: 24 months.
4. Safety & Handling
| Hazard | Precaution |
|---|---|
| Skin/Irritation | Wear gloves and protective clothing. Rinse with water if contacted. |
| Inhalation Risk | Use in well-ventilated areas or with respiratory protection. |
| Fire Hazard | Non-flammable. Use CO2 or dry powder extinguishers for decomposition products. |
5. Client Case Studies
Case 1: Hubei Jiangmin Taihua Chemical Co., Ltd.
Application: Intermediate for pharmaceutical APIs.
Outcome: Achieved 98.5% reaction yield in sulfonation processes.
Case 2: Wuhan Pusida Bio-Tech
Application: Dye dispersion agent in textile manufacturing.
Outcome: Reduced dye aggregation by 40%, improving color consistency.
6. Contact for Quotations
Request bulk pricing or technical support:
Email: info@vivalr.com
Tel: (86) 15866781826
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