Aniline-2-sulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 88-21-1 |
| Product name | Aniline-2-sulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical 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 Aniline-2-sulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Aniline-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 Aniline-2-sulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Azo dye intermediate | Used in the synthesis of azo dyes such as acid dyes and direct dyes; coupled with other aromatic amines or phenols following diazotization to form colored compounds |
| Pharmaceutical Industry | Pharmaceutical synthesis intermediate | Serves as an intermediate in the synthesis of certain sulfonamide drugs and anti-inflammatory agents; participates in organic synthesis steps including condensation and acylation |
| Pesticide Industry | Pesticide intermediate | Used as an intermediate in the preparation of certain herbicides and fungicides; contributes to constructing the active molecular structure |
| Analytical Chemistry | Preparation of analytical reagents | Used to prepare colorimetric reagents for metal ions, such as for the detection of iron, copper, and other metal ions in colorimetric analysis |
Manufacturing Quality Control of Aniline-2-sulfonic acid
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color and condition of the sample under natural light or standard light source to determine whether it is a white or off-white crystalline powder, and check for any impurities or clumping. |
| Content Determination | Acid-Base Titration | Utilize the acidity of 2-aminobenzenesulfonic acid, titrate with a standard sodium hydroxide solution, using phenolphthalein as an indicator, and calculate the content of the main component. Suitable for samples with high content. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 chromatographic column and a UV detector (usually at around 254 nm), identify by retention time and quantify by peak area to accurately determine the content of the main component and related substances. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Similar to content determination, separate each impurity peak through gradient elution, and calculate the impurity content using reference standards or self-comparison method to evaluate purity. |
| Dry Loss | Drying Method (Thermogravimetric Analysis) | Dry the sample in an oven at 105°C until constant weight, and calculate the moisture and other volatile components based on mass loss. |
| Residue on Ignition (Sulfate Ash) | Gravimetric Method | The residue after high-temperature incineration of the sample contains inorganic substances in the form of sulfates. Weigh the residue to calculate the percentage and reflect the content of inorganic impurities. |
| Heavy Metals | Sulfide Colorimetric Method (e.g., Chinese Pharmacopoeia Method) | Under weakly acidic conditions, heavy metals react with hydrogen sulfide to form colored precipitates. The presence of heavy metal impurities such as lead and arsenic is limited by colorimetric comparison. |
| Chlorides | Silver Nitrate Turbidimetric Method | Add silver nitrate to the sample solution to generate silver chloride turbidity. Compare the turbidity with that of a standard chloride solution to control the limit of chloride ion impurities. |
| Sulfate | Turbidimetric Method or Ion Chromatography | Generate barium sulfate precipitate by adding barium chloride; determine by turbidimetry, or use ion chromatography for precise measurement of sulfate ion content. |
| pH Value | pH Meter Measurement | Prepare a certain concentration aqueous solution of the sample (e.g., 1%), and measure the pH value using a calibrated pH meter to evaluate its acidic or basic properties. |
| Melting Point | Capillary Melting Point Determination | Use a melting point apparatus or traditional heating device to observe the initial and final melting temperatures of the sample during heating to assess its purity and consistency. |
Technical Specifications of Aniline-2-sulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to almost white crystalline powder |
| Purity | >=98.0% (HPLC) |
| Melting Point | 282-286°C (decomposes) |
| 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 Aniline-2-sulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Aniline-2-sulfonic acid
Packaging of Aniline-2-sulfonic acid
Industrial Aniline-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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