3-Methyl-2-nitrobenzoic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 5437-38-7 |
| Product name | 3-Methyl-2-nitrobenzoic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural 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 3-Methyl-2-nitrobenzoic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3-Methyl-2-nitrobenzoic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3-Methyl-2-nitrobenzoic acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Intermediates | Structural building blocks for synthesizing anti-inflammatory, antimicrobial, and anticancer agents | Used as key intermediates in coupling, reduction, and esterification reactions to construct active molecular scaffolds |
| Agrochemical Intermediates | Preparation of novel herbicides and insecticides | Converted to acyl chlorides followed by condensation with amines, or functionalized via nitro reduction–diazotization–substitution sequences |
| Dyes and Pigments | Synthesis of azo dyes and functional colorants | Employed as diazo components in coupling reactions, providing specific electronic effects to tune dye absorption wavelengths |
| Organic Synthesis | Multifunctional synthons for constructing complex aromatic heterocyclic systems | Reduced from nitro to amino groups for subsequent cyclization, or diversified via decarboxylation, halogenation, and other derivatization reactions |
Manufacturing Quality Control of 3-Methyl-2-nitrobenzoic acid
| Detection Item | Common Testing Method | Method Overview |
|---|---|---|
| Purity (Main Component Content) | High-Performance Liquid Chromatography (HPLC) | Uses a C18 reversed-phase column with mobile phases of methanol/water or acetonitrile/water (containing a small amount of acid, such as phosphoric acid), detected by UV detector (254 nm or 280 nm). Quantification is performed using external standard or internal standard method to determine the content of 3-methyl-2-nitrobenzoic acid and potential impurities, suitable for separation and quantification of the main component and its related impurities. |
| Melting Point | Melting Point Determination (Capillary Tube Method) | Follows methods described in Chinese Pharmacopoeia or USP. The sample is loaded into a capillary tube and heated slowly; the temperature range from the onset to complete melting is recorded. The typical melting point of 3-methyl-2-nitrobenzoic acid is 148–152°C, used for preliminary identification and purity assessment. |
| Water Content | Karl Fischer Titration | Utilizes Karl Fischer reagent composed of iodine, sulfur dioxide, pyridine, and methanol, which reacts quantitatively with water. The endpoint is determined by potentiometric or coulometric detection. Suitable for trace moisture analysis (typically required ≤0.5%). |
| Nitro Group Content (Indirect) | UV-Visible Spectrophotometry (UV-Vis) | Based on the characteristic absorption peak of nitroaromatic compounds at 270–290 nm, absorbance is measured via standard curve method to estimate relative nitro group content, serving as auxiliary confirmation of structural integrity (should be verified in conjunction with HPLC). |
| Impurity Profile (Organic Impurities) | HPLC-MS / LC-MS | Combines HPLC with mass spectrometry detection to identify and quantify the main component and potential impurities (e.g., unreacted raw materials, oxidation by-products, denitration products), enabling comprehensive impurity profiling. |
| Inorganic Impurities (e.g., Chloride, Sulfate) | Ion Chromatography (IC) or Colorimetric Method | Ion chromatography is used to detect residual anions such as Cl⁻ and SO₄²⁻; alternatively, pharmacopeial colorimetric methods (e.g., chloride forms silver chloride precipitate with silver nitrate) are applied to control levels of inorganic impurities. |
| Appearance and Color | Visual Inspection + Colorimetry | Observe the sample as yellow to pale yellow crystalline powder. Use a colorimeter (e.g., HunterLab) to measure L*a*b* values, ensuring batch-to-batch color consistency and preventing over-oxidation or contamination. |
| Solubility | Shake Flask Method / Solubility Analyzer | Determine solubility in different pH buffers (e.g., water, 0.1 M NaOH, ethanol) for process development and formulation design. Typically slightly soluble in water but readily soluble in alkaline solutions. |
| Fourier Transform Infrared Spectroscopy (FTIR) | FTIR Spectroscopy | Identifies functional groups based on characteristic absorption peaks (e.g., carboxyl C=O stretch at ~1680 cm⁻¹, asymmetric NO₂ stretch at ~1530 cm⁻¹, aromatic C=C at ~1600 cm⁻¹), used for structural confirmation and batch-to-batch consistency comparison. |
| Nitrogen Content (Elemental Analysis) | Elemental Analyzer (CHNS/O) | Determines elemental composition (C, H, N, S, O) via combustion analysis. Compared with theoretical values (for C₈H₇NO₄, theoretical N content ≈11.8%), confirming molecular formula accuracy, especially critical for high-purity product verification. |
Technical Specifications of 3-Methyl-2-nitrobenzoic acid
| Test Item | Specification |
|---|---|
| Appearance | White to almost white crystalline powder |
| Purity | >=98.0% (LC-MS) |
| Melting Point | 142–146°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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 3-Methyl-2-nitrobenzoic acid
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NMR Spectra of 3-Methyl-2-nitrobenzoic acid
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Industrial 3-Methyl-2-nitrobenzoic 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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