METANILIC ACID SODIUM SALT Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 1126-34-7 |
| Product name | METANILIC ACID SODIUM SALT |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial GradeSpecialty GradeFood 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 SODIUM SALT
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk METANILIC ACID SODIUM SALT Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of METANILIC ACID SODIUM SALT
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of antihypertensive agents | Used as an intermediate in the synthesis of sulfonamide drugs |
| Dyes | Synthesis of azo dyes | Applied in azo group introduction reactions |
| Pesticides | Synthesis of herbicides or insecticides | Serves as a precursor for sulfonic acid groups in pesticide molecule construction |
| Food additives | Acidity regulator | Employed in food processing to adjust and stabilize pH |
| Fine chemicals | Synthesis of other organic sulfonic acid derivatives | Functionalized via reactions of the amino group with various functional groups |
Manufacturing Quality Control of METANILIC ACID SODIUM SALT
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance and Characteristics | Visual Inspection + Physical Property Measurement | Observe the color and state of the sample (usually white to off-white crystalline powder), measure solubility (soluble in water, slightly soluble in ethanol), and ensure compliance with the requirements for physical properties from the Chinese Pharmacopoeia or internal quality control standards. |
| Identification | Infrared Spectroscopy (IR) | Compare characteristic absorption peaks in the IR spectrum (such as —NH₂, —SO₃Na, aromatic ring C=C functional groups) with standard spectra to confirm molecular structure. |
| High-Performance Liquid Chromatography (HPLC) | Use a UV detector at a specific wavelength (e.g., 254 nm) to detect the retention time of the main peak, and compare it with a reference substance to confirm component consistency. | |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with water-methanol or water-acetonitrile as the mobile phase. Quantify the main component, 3-aminobenzenesulfonic acid monosodium salt, using external or internal standard methods; typically requires ≥98.0%. |
| Titration Analysis (Acid-Base Titration) | Utilize its zwitterionic nature of the sulfonic acid group and amine group, using non-aqueous titration or strong acid/strong base titration in aqueous solution to determine the content of the active ingredient (suitable when there are no interfering impurities). | |
| Moisture Content | Karl Fischer Method | Determine trace moisture content using volumetric or coulometric Karl Fischer titration, controlling it to ≤1.0% (depending on usage requirements), ensuring stability and storage performance. |
| Sulfate Impurity | Turbidimetric Method (Barium Sulfate Precipitation Method) | After acidification, add barium chloride to form barium sulfate precipitate, and compare turbidity with a standard sulfate solution to control sulfate impurity levels (e.g., ≤0.05%). |
| Chloride Impurity | Silver Nitrate Titration / Turbidimetric Method | After nitric acid acidification, add silver nitrate to generate silver chloride precipitate. Determine chloride ion content by visual turbidity comparison or spectrophotometry, controlling it to ≤0.01%. |
| Heavy Metals | Atomic Absorption Spectrometry (AAS) or ICP-MS | After ashing or digestion, use AAS or ICP-MS to determine heavy metals such as lead, cadmium, mercury, and arsenic, meeting pharmacopoeia limits (e.g., Pb ≤ 2 ppm). |
| Organic Impurities (Related Substances) | High-Performance Liquid Chromatography (HPLC) | Use gradient or isocratic elution with a UV detector to monitor possible unreacted raw materials, oxidation products, azo byproducts, etc. Single impurity ≤ 0.5%, total impurities ≤ 1.0% (based on ICH Q3B guidelines). |
| pH Value | pH Meter Measurement | Prepare a 1% aqueous solution and measure pH with a calibrated pH meter, controlling the pH range (typically 6.0–8.0) to ensure solution stability and biocompatibility. |
| Dry Loss | Thermogravimetric Analysis (TGA) or Oven Method | Dry at 105°C until constant weight to determine the proportion of volatile substances (including moisture and low-boiling-point impurities), usually requiring ≤2.0%. |
| Microbial Limit (if applicable) | Total Bacterial Count, E. coli, Salmonella Detection | Conduct according to the Microbial Limit Test in the Chinese Pharmacopoeia, suitable for pharmaceutical-grade products, controlling aerobic bacterial count, mold and yeast count, and pathogenic bacteria to meet requirements for non-sterile preparations. |
Technical Specifications of METANILIC ACID SODIUM SALT
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 235-240 °C (decomposes) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Solubility | Freely soluble in water; sparingly soluble in ethanol |
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 SODIUM SALT
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| Lot/Batch Number | *Required fields | |
Packaging of METANILIC ACID SODIUM SALT
Industrial METANILIC ACID SODIUM SALT 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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