Diethyl sulfite Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 623-81-4 |
| Product name | Diethyl sulfite |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeIndustrial GradeCosmetic GradeFood Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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 Diethyl sulfite
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Diethyl sulfite Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Diethyl sulfite
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of pharmaceutical intermediates | Reacted with various amines to produce corresponding sulfinamides, serving as precursors for antibiotics, antiviral agents, and other active pharmaceutical ingredients |
| Dyes | Production of dye intermediates | Used as a reducing agent in azo dye synthesis or incorporated into specific dye structures |
| Pesticides | Manufacture of pesticide raw materials | Involved in the synthesis of active ingredients for herbicides and insecticides |
| Fine Fragrances | Fragrance synthesis | Employed as a key raw material in the preparation of certain fragrance compounds, including floral-type scents |
| Plastic Additives | Antioxidant production | Acts as a stabilizer in plastic additives to prevent polymer degradation |
| Textile Processing | Fabric finishing | Applied to enhance fiber properties, such as softness and durability |
| Leather Processing | Leather tanning | Contributes to leather softening and color fixation |
| Other Specialty Chemicals | Synthesis of diverse chemical products | Serves as a versatile reagent in multiple organic synthesis reactions |
Manufacturing Quality Control of Diethyl sulfite
| 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 under optimized chromatographic conditions. |
| Water Content | Karl Fischer Titration | Electrochemical titration where iodine reacts stoichiometrically with water in a methanol-based solvent system. |
| Acidity (as H2SO4) | Acid-Base Titration with NaOH | Neutralization of acidic impurities using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Color | Visual Comparison or Spectrophotometry (APHA scale) | Assessment of yellowness intensity by matching sample color to platinum-cobalt standard solutions or measuring absorbance at 430 nm. |
| Density at 20 C | Digital Density Meter | Measurement of mass per unit volume using oscillating U-tube principle calibrated with air and water standards. |
| Refractive Index at 20 C | Refractometry | Determination of light bending angle at air-sample interface using calibrated Abbe refractometer. |
| Residue on Evaporation | Gravimetric Analysis | Evaporation of a known sample mass to dryness followed by weighing of non-volatile residue. |
| Chloride Content | Ion Chromatography (IC) | Separation and quantification of chloride anions using ion-exchange column and conductivity detection. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of total heavy metals after wet digestion, using lead as the representative element and flame or graphite furnace AAS. |
| Ethanol Content | Gas Chromatography (GC) with FID | Separation and quantification of residual ethanol using internal standard (e.g., n-propanol) and calibration curve. |
| Sulfuric Acid Content | Ion Chromatography (IC) | Detection and quantification of sulfate ions derived from hydrolyzed sulfuric acid impurity. |
| Non-Volatile Matter | Gravimetric Analysis | Evaporation of sample under controlled temperature and pressure, followed by weighing of residual solids. |
Technical Specifications of Diethyl sulfite
| Test Item | Specification |
|---|---|
| Appearance | Colorless to almost colorless clear liquid |
| Purity | >=98.0% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.405–1.415 |
| Relative Density (20°C/25°C) | 0.975–0.985 g/cm³ |
| Odor | Characteristic sulfurous 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 Diethyl sulfite
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Diethyl sulfite
Packaging of Diethyl sulfite
Industrial Diethyl sulfite 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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