Metanilic Acid (CAS No. 121-47-1): Properties, Applications & Quality Standards
Metanilic Acid, identified by CAS No. 121-47-1, is an essential aromatic sulfonic acid used as a key intermediate in several chemical manufacturing processes. Due to its consistent performance, chemical stability, and compatibility with industrial synthesis, it is widely used in dyes, pharmaceuticals, agrochemicals, and specialty chemicals.
Apurva Chemicals, a trusted name in the chemical industry, supplies high-quality Metanilic Acid that meets stringent domestic and international quality standards. This article provides detailed insights into the properties, applications, and quality benchmarks of Metanilic Acid, helping buyers make informed sourcing decisions.
Properties of Metanilic Acid (CAS No. 121-47-1)
The physical and chemical properties of Metanilic Acid make it suitable for controlled industrial reactions and downstream processing.
Chemical & Physical Properties
- Chemical Name: Metanilic Acid (m-Aminobenzenesulfonic Acid)
- CAS Number: 121-47-1
- Molecular Formula: C₆H₇NO₃S
- Molecular Weight: 173.19 g/mol
- Appearance: White to light grey crystalline powder
- Odor: Odorless
- pH Nature: Mildly acidic
- Solubility:
- Slightly soluble in cold water
- More soluble in hot water
- Thermal Stability: Stable under recommended storage conditions
These properties make Metanilic Acid ideal for diazotization, coupling reactions, and sulfonation-based chemical synthesis, especially in colorant and pharmaceutical applications.
Applications of Metanilic Acid
Metanilic Acid (121-47-1) serves as a critical intermediate across multiple industrial sectors.
1. Dye & Pigment Industry
- Used in the production of azo dyes and dye intermediates
- Widely applied in textile, leather, and paper dyeing
- Contributes to improved color strength, shade consistency, and fastness
2. Pharmaceutical Industry
- Acts as an intermediate in the synthesis of pharmaceutical compounds
- Used in specialty APIs and drug intermediates
- Preferred due to its controlled purity and reaction efficiency
3. Agrochemical Industry
- Used in the manufacture of herbicides, pesticides, and crop protection chemicals
- Helps achieve consistent chemical performance in formulations
4. Specialty & Fine Chemicals
- Utilized in laboratory-scale and commercial chemical synthesis
- Used in research and development for custom chemical formulations
Quality Standards of Metanilic Acid
Quality consistency is critical for industrial performance and regulatory compliance. At Apurva Chemicals, Metanilic Acid is manufactured and supplied under strict quality control systems.
Typical Quality Specifications
- Purity: ≥ 98% (higher purity available on request)
- Appearance: Uniform crystalline powder
- Moisture Content: Controlled as per specification
- Heavy Metals: Within permissible limits
- Batch Consistency: Maintained through standardized processes
Quality Assurance & Compliance
- Manufactured under ISO-certified quality systems
- In-house laboratory testing at every production stage
- Supplied with:
- Certificate of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Technical Data Sheet (TDS)
- Suitable for domestic use and export markets
Packaging & Storage
- Packaging Options: HDPE bags, fiber drums, or customized export packaging
- Storage Conditions:
- Store in a cool, dry, and well-ventilated area
- Protect from moisture and direct sunlight
- Shelf Life: Long shelf life when stored as recommended
Why Choose Apurva Chemicals for Metanilic Acid?
Apurva Chemicals is committed to delivering reliable quality, regulatory compliance, and consistent supply.
Our Strengths:
- Proven expertise in chemical manufacturing and supply
- Strict quality control and documentation
- Customized purity and packaging options
- Timely delivery for Indian and international customers
- Technical support and responsive customer service
Conclusion
Metanilic Acid (CAS No. 121-47-1) is a vital chemical intermediate valued for its stable properties, diverse industrial applications, and defined quality standards. Its effectiveness in dyes, pharmaceuticals, and agrochemicals depends heavily on purity and manufacturing precision.
With a strong focus on quality and compliance, Apurva Chemicals stands as a reliable supplier of Metanilic Acid, supporting industries with consistent performance and dependable supply.
