4-Nitrotoluene-2-sulfonic Acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 121-03-9 |
| Product name | 4-Nitrotoluene-2-sulfonic Acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial GradeSpecialty GradeReagent 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 4-Nitrotoluene-2-sulfonic Acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4-Nitrotoluene-2-sulfonic Acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4-Nitrotoluene-2-sulfonic Acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of pharmaceutical intermediates | Further derivatization following nitration and sulfonation reactions |
| Dyes | Production of acid dyes and disperse dyes | Sulfonic acid groups impart water solubility; nitro groups are reduced to amino groups prior to coupling reactions |
| Analytical reagents | Colorimetric or precipitating agents in chemical analysis | Sulfonic acid groups enhance polarity to improve separation efficiency |
| Pesticides | Production of pesticide intermediates | Target compounds synthesized via reduction, amination, and related steps |
Manufacturing Quality Control of 4-Nitrotoluene-2-sulfonic Acid
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Purity (Content) | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase column (e.g., C18) with methanol-water or acetonitrile-water as the mobile phase. Detection is performed at 254 nm or 270 nm using a UV detector. Purity is calculated by comparison with reference standards. It offers high sensitivity and reproducibility and is considered the gold standard for quantitative analysis. |
| Impurity Analysis | Gas Chromatography-Mass Spectrometry (GC-MS) | Suitable for qualitative and quantitative analysis of volatile impurities. Sample derivatization (e.g., silylation) may be required to enhance volatility. It can identify and quantify trace by-products (e.g., unreacted starting materials, isomers). |
| Structure Confirmation | Nuclear Magnetic Resonance Spectroscopy (NMR, ¹H NMR & ¹³C NMR) | Analyzes molecular structure characteristics through ¹H NMR and ¹³C NMR spectra to confirm substitution positions and functional groups of 4-nitrotoluene-2-sulfonic acid. Used to verify if the product matches the target compound structure. |
| Functional Group Identification | Fourier Transform Infrared Spectroscopy (FTIR) | Identifies functional groups based on characteristic absorption peaks (e.g., nitro group ν(NO₂) at 1530–1350 cm⁻¹, sulfonyl group ν(SO₂) at 1200–1100 cm⁻¹). Provides a rapid verification of structural integrity. |
| Water Content | Karl Fischer Titration | Determines the moisture content in the sample to ensure it is within specified limits (typically <0.5%) to avoid affecting subsequent reactions or stability. |
| Melting Point Determination | Micro Melting Point Apparatus Method | Determines the melting range of the sample (typically around 160–165 °C) to assess its purity and crystalline state. A low or broad melting range may indicate the presence of impurities. |
| Residual Solvents | Gas Chromatography (GC) | Detects residual organic solvents (e.g., toluene, ethanol, dichloromethane) using headspace or solution injection. Complies with ICH Q3A standards to ensure product safety. |
Technical Specifications of 4-Nitrotoluene-2-sulfonic Acid
| Test Item | Specification |
|---|---|
| Appearance | White to light brown crystalline powder |
| Purity | >=98.0% (by HPLC) |
| Melting Point | 125.0–129.0 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
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 4-Nitrotoluene-2-sulfonic Acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 4-Nitrotoluene-2-sulfonic Acid
Safety Information of 4-Nitrotoluene-2-sulfonic Acid
| Pictograms |  |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of 4-Nitrotoluene-2-sulfonic Acid
Industrial 4-Nitrotoluene-2-sulfonic 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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