AMMONIUM SULFITE Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 10196-04-0 |
| Product name | AMMONIUM SULFITE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial 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 AMMONIUM SULFITE
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk AMMONIUM SULFITE Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of AMMONIUM SULFITE
| Industry | Application | Process |
|---|---|---|
| Textile Industry | Bleaching Agent | Applied to bleaching natural fibers such as cotton and linen, improving whiteness and softness of textiles |
| Food Industry | Antioxidant, Preservative | Used in beverages such as fruit juice and wine to prevent oxidative spoilage |
| Pharmaceutical Industry | Intermediate | Serves as a synthetic intermediate in drug manufacturing |
| Water Treatment | Reducing Agent | Applied to remove heavy metal ions from water |
| Rubber Industry | Defoamer | Used as a defoaming agent during rubber production |
| Pulp & Paper Industry | Bleaching Aid | Applied in pulp bleaching to enhance paper whiteness |
Manufacturing Quality Control of AMMONIUM SULFITE
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (NH4)2SO3 | Acid-Base Titration | Direct titration with standardized iodine solution under acidic conditions, based on redox reaction where sulfite is oxidized to sulfate. |
| pH (10% w/w aqueous solution) | pH Meter Measurement | Electrochemical measurement using calibrated pH electrode in a 10% (w/w) aqueous solution of ammonium sulfite. |
| Heavy Metals (as Pb) | Visual Comparison after Dithizone Extraction | Reaction with dithizone in ammoniacal medium; color intensity compared to lead standard for semi-quantitative estimation. |
| Iron (Fe) | Atomic Absorption Spectroscopy (AAS) | Quantification of Fe concentration by measuring absorption of specific wavelength light by ground-state Fe atoms in flame. |
| Chloride (Cl-) | Potentiometric Titration with AgNO3 | Titration with silver nitrate using silver indicator electrode; endpoint detected by potential change due to AgCl precipitation. |
| Sulfate (SO4^2-) | Gravimetric Analysis | Precipitation as BaSO4 followed by filtration, drying, and weighing to determine sulfate content. |
| Ammonia (NH3) Volatility | Distillation followed by Acid-Base Titration | Ammonia liberated by alkali distillation is absorbed in boric acid and titrated with standardized HCl. |
| Moisture Content | Karl Fischer Coulometric Titration | Electrochemical generation of iodine to react stoichiometrically with water; water content calculated from coulombs consumed. |
| Insoluble Matter | Gravimetric Filtration | Sample dissolved in water, filtered through pre-weighed sintered glass crucible, dried and weighed. |
| Nitrate (NO3-) | UV-Vis Spectrophotometry (after reduction to NO2-) | Reduction to nitrite followed by diazotization and coupling to form azo dye; absorbance measured at ~540 nm. |
| Arsenic (As) | Hydride Generation AAS (HG-AAS) | Generation of arsine gas from acidic sample matrix, swept into quartz cell for atomic absorption measurement. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Oven Drying | Mass loss measured after heating at 105 C for 2 hours under controlled atmosphere to determine volatile content. |
Technical Specifications of AMMONIUM SULFITE
| Test Item | Specification |
|---|---|
| Appearance | White crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.0% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Odor | Characteristic sulfurous odor |
| Solubility | Freely soluble in water |
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 AMMONIUM SULFITE
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of AMMONIUM SULFITE
Industrial AMMONIUM 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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