1939-99-7 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 1939-99-7 |
| Product name | 1939-99-7 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeIndustrial GradeReagent GradeCosmetic 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 1939-99-7
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1939-99-7 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 1939-99-7
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Industry | Synthesis of drug intermediates | Used as a sulfonylation reagent for synthesizing drug molecules containing sulfonamide or sulfonyl groups |
| Agrochemical Industry | Synthesis of herbicide or insecticide intermediates | Applied in the synthesis of sulfonamide- or sulfonyl-containing active agrochemical ingredients |
| Materials Science | Synthesis of functional materials | Employed to prepare functional organic materials, such as polymers or liquid crystal materials |
| Chemical Reagents | Laboratory reagent | Used in organic synthesis for sulfonylation reactions |
| Fine Fragrance Industry | Synthesis of fragrance compounds | Serves as a raw material for synthesizing certain aromatic compounds |
| Dye Industry | Synthesis of dye intermediates | Applied in the synthesis of sulfonamide- or sulfonyl-containing dyes |
Manufacturing Quality Control of 1939-99-7
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantitative determination based on peak area comparison against a certified reference standard using a non-polar capillary column. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration where iodine reacts stoichiometrically with water in a methanol-based reagent; endpoint detected amperometrically. |
| Acidity (as HCl) | Acid-Base Titration with NaOH | Neutralization of acidic impurities (e.g., residual HCl or sulfonic acids) using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Residue on Ignition | Gravimetric Analysis | Heating sample to 700-800 C in a platinum crucible to combust organic matter; residue mass measured after cooling in desiccator. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of total heavy metals after acid digestion by measuring absorbance of ground-state atoms at element-specific wavelengths. |
| Chloride Content | Potentiometric Titration with AgNO3 | Precipitation of chloride ions as AgCl; endpoint detected by silver ion-selective electrode potential change. |
| Sulfate Content | Barium Sulfate Gravimetric Method | Precipitation of sulfate as BaSO4 in acidic medium, followed by filtration, ignition, and weighing of dried precipitate. |
| Appearance | Visual Inspection | Assessment of physical state, color, and clarity against standard white background under controlled lighting conditions. |
| Density | Digital Density Meter | Measurement of oscillating U-tube frequency filled with sample, converted to density via calibration with air and water. |
| Refractive Index | Abbe Refractometer | Determination of refractive index at 20 C using sodium D-line light source based on critical angle measurement. |
| Boiling Point | Distillation Apparatus (Microscale) | Determination of temperature range at which vapor pressure equals atmospheric pressure during controlled micro-distillation. |
| Organic Impurities (Related Substances) | High-Performance Liquid Chromatography (HPLC) with UV detection | Separation on reversed-phase column and quantification of impurities by UV absorption at 254 nm relative to main peak. |
Technical Specifications of 1939-99-7
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow solid |
| Purity | >=98.0% (by LC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Melting Point | 48–52°C |
| Identification (NMR) | Consistent with structure |
| Odor | Pungent, characteristic |
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 1939-99-7
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 1939-99-7
Packaging of 1939-99-7
Industrial 1939-99-7 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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