Metanilic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 121-47-1 |
| Product name | Metanilic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Reagent GradeIndustrial GradeSpecialty Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for Metanilic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Metanilic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Metanilic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Synthesis of acid dyes and direct dyes | Used as an intermediate in coupling reactions with diazonium salts to produce azo dyes |
| Chemical Intermediates | Preparation of sulfonamide drugs | Applied in the synthesis of antibacterial drug precursors via acylation, cyclization, and related reactions |
| Organic Synthesis | Synthesis of azo compounds and functional materials | Employed as a bifunctional raw material—bearing both amino and sulfonic acid groups—in condensation reactions |
| Analytical Chemistry | Used as a colorimetric reagent or indicator | Applied in colorimetric analysis for detection and quantification of metal ions |
Manufacturing Quality Control of Metanilic acid
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Purity (Main Component Content) | High-Performance Liquid Chromatography (HPLC) | Using a C18 reverse-phase chromatography column, with water-methanol or water-acetonitrile as the mobile phase, and a UV detector (254 nm) for detection. Quantification of the main component is carried out using external or internal standard methods, effectively separating impurities. |
| Moisture Content | Karl Fischer Titration | Utilizing Karl Fischer reagent composed of iodine, sulfur dioxide, pyridine, and methanol, which reacts specifically with water. Moisture content is determined by potentiometric or coulometric titration, suitable for precise measurement of moisture in solid organic substances. |
| Residue on Ignition (Ash Content) | Residue on Ignition Method (Combustion Residue Method) | The sample is ignited at high temperature (500–600°C) until constant weight, and the residual inorganic material is considered as ash. This method is used to evaluate the content of inorganic impurities and complies with the requirements of the Chinese Pharmacopoeia General Chapter 0841. |
| Heavy Metal Content | Atomic Absorption Spectrometry (AAS) or ICP-MS | After acid digestion of the sample, heavy metals such as lead, cadmium, mercury, and arsenic are determined using atomic absorption spectrometry or inductively coupled plasma mass spectrometry, complying with the heavy metal limit requirements in the pharmacopoeia. |
| Chloride Content | Chloride Precipitation Turbidimetric Method | A white turbid precipitate of silver chloride is formed when the sample solution reacts with silver nitrate. The turbidity is compared with that of a standard sodium chloride solution under identical conditions to control the chloride ion content, complying with the Chinese Pharmacopoeia General Chapter 0801. |
| Sulfate Content | Sulfate Barium Turbidimetric Method | After acidification, barium chloride is added to generate a white sulfate barium precipitate. The turbidity is compared with that of a standard potassium sulfate solution to quantitatively control sulfate ion impurities, complying with the Chinese Pharmacopoeia General Chapter 0802. |
| pH Value | pH Meter Method | The sample is prepared as a solution of specified concentration, and the pH value is directly measured using a calibrated pH meter to ensure it falls within the quality standard range (typically between 4.0–7.0). |
| Melting Point | Melting Point Determination Method | Using capillary or automatic melting point apparatus to measure the melting temperature range of the sample, which is compared with the standard value (approximately 175–180°C), used for identification and preliminary purity assessment. |
| Thin Layer Chromatography (TLC) | Thin Layer Chromatography | Using silica gel G plates as the stationary phase, with an optimized eluent of ethyl acetate-methanol-water. Detection is performed under UV light or with a chromogenic agent to identify impurity spots, suitable for rapid screening. |
| Amide and Sulfonic Acid Group Qualitative Confirmation | Fourier Transform Infrared Spectroscopy (FT-IR) | Confirming molecular structural integrity by characteristic absorption peaks (e.g., –NH₂ at 3400 cm⁻¹, –SO₃H at 1180–1200 cm⁻¹), used for identification and functional group verification. |
| Organic Impurities (Related Substances) | HPLC-MS Combined Technique | Combined with a mass spectrometer detector on the basis of HPLC, this method identifies the main component and unknown impurities, suitable for qualitative and quantitative analysis of trace impurities, complying with ICH Q3B guidelines. |
Technical Specifications of Metanilic acid
| Test Item | Specification |
|---|---|
| Appearance | White to off-white powder |
| Purity | ≥98.0% |
| Water | ≤0.3% |
| Fe | ≤50 ppm |
| Insolubles | ≤0.5% |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Metanilic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Metanilic acid
Packaging of Metanilic acid
Industrial Metanilic acid Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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