368-43-4 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 368-43-4 |
| Product name | 368-43-4 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeReagent GradeIndustrial Grade |
| Packaging | 25L/drum |
| 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 368-43-4
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 368-43-4 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 368-43-4
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Intermediate for synthesizing sulfonamide-based drugs (e.g., antibiotics, antidiabetics) | Undergoes nucleophilic substitution with amines to yield benzenesulfonamide derivatives |
| Agrochemicals | Key intermediate for preparing sulfonylurea herbicides | Participates in condensation reactions to construct the sulfonylurea bridge structure |
| Materials Science | Polymer modifier for introducing thermally stable and weather-resistant functional groups | Acts as a sulfonylation reagent to modify end groups or side chains of polymers such as polyethers and polyimides |
| Organic Synthesis | Selective protecting reagent for primary amines | Reacts with primary amines under basic conditions to form stable benzenesulfonamides; deprotection is achieved using strong base (e.g., KOH/ethylene glycol) |
| Analytical Chemistry | Derivatization reagent for tyrosine and lysine residues in proteins and peptides | Labels functional groups prior to mass spectrometry or chromatographic analysis to enhance detection sensitivity and selectivity |
Manufacturing Quality Control of 368-43-4
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies benzene sulfonyl fluoride peak area relative to a calibrated standard using retention time and response factor. |
| Water Content | Karl Fischer Titration | Measures water by electrochemical titration with iodine, where water reacts stoichiometrically with iodine and sulfur dioxide in pyridine/methanol medium. |
| Acidity (as HCl) | Acid-Base Titration with NaOH | Neutralizes acidic impurities (e.g., HCl from hydrolysis) using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue after controlled high-temperature ashing of a weighed sample. |
| Chloride Impurities | Ion Chromatography (IC) | Separates and quantifies chloride ions using anion-exchange column and conductivity detection. |
| Sulfate Impurities | Ion Chromatography (IC) | Separates and quantifies sulfate ions using anion-exchange column and conductivity detection. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Measures total heavy metal content by atomizing the sample and detecting absorbance of characteristic wavelengths for lead. |
| Non-Volatile Residue | Gravimetric Analysis | Determines residue remaining after evaporation of a known sample mass under controlled temperature and vacuum. |
| Color | Visual Comparison or Spectrophotometry (APHA scale) | Compares sample color against platinum-cobalt standard solutions or measures absorbance at 455 nm. |
| Density | Digital Density Meter | Determines mass per unit volume using oscillating U-tube principle based on resonant frequency shift. |
| Refractive Index | Refractometry | Measures bending of light passing through the sample at 20 C using calibrated prism and critical angle detection. |
| Volatility Loss | Thermogravimetric Analysis (TGA) | Quantifies weight loss under controlled heating to assess thermal stability and volatile impurities. |
Technical Specifications of 368-43-4
| Test Item | Specification |
|---|---|
| Appearance | Clear, colorless liquid |
| Purity | >=98.5% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Refractive Index (n20/D) | 1.525–1.535 |
| Relative Density (20°C/4°C) | 1.360–1.380 g/cm³ |
| Odor | Characteristic pungent odor |
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 368-43-4
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 368-43-4
Packaging of 368-43-4
Industrial 368-43-4 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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