3-Methylsalicylic Acid (CAS 83-40-9): Comprehensive User Guide
Table of Contents
1. Product Overview & Comparative Analysis
Basic Specifications
| Parameter | Value |
|---|---|
| Chemical Name | 3-Methylsalicylic Acid |
| CAS Number | 83-40-9 |
| Molecular Formula | C8H8O3 |
| Molecular Weight | 152.15 g/mol |
| Appearance | White to off-white crystalline powder |
| Purity | ≥98% (HPLC) |
| Melting Point | 148-150°C |
| Solubility | Soluble in ethanol, DMSO; slightly soluble in water |
Competitive Benchmarking
| Feature | 3-Methylsalicylic Acid | Salicylic Acid | 4-Methylsalicylic Acid |
|---|---|---|---|
| Melting Point | 148-150°C | 158-161°C | 165-167°C |
| Solubility in Ethanol | High | Moderate | Moderate |
| Pharmaceutical Use | Intermediate | API | Limited |
2. Key Applications & Industrial Uses
Pharmaceutical Intermediate
Used in synthesis of non-steroidal anti-inflammatory drugs (NSAIDs) and anticoagulants.
Agrochemical Formulations
Key component in fungicides and plant growth regulators due to its bioactivity.
Dye Manufacturing
Precursor for azo dyes and specialty colorants in textile industries.
Cosmetic Preservatives
pH adjuster and preservative booster in skincare formulations.
Research Chemical
Standard reference material in analytical chemistry and metabolic studies.
3. Practical Use Cases
Case 1: NSAID Synthesis
Process: 3-Methylsalicylic Acid → Esterification → Final API (e.g., Diflunisal analog)
Case 2: Agricultural Fungicide
Formulation: 0.5% w/w 3-Methylsalicylic Acid in combination with triazole compounds
4. Verified Customer Success Stories
Client: AgroChem Solutions Ltd. (Spain)
Application: Development of broad-spectrum fungicide
Result: 22% improvement in powdery mildew control vs. industry standards
Client: PharmaSynth Inc. (USA)
Application: API intermediate for COX-2 inhibitor
Result: Reduced synthesis steps from 7 to 4, achieving 98.3% purity
5. Contact for Customized Solutions
Technical Support: Available M-F 9:00-17:00 (GMT+8)
Email: info@vivalr.com
Phone: (86) 15866781826
Request batch-specific COA, MSDS, or custom synthesis protocols.



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