AMMONIUM SULFITE Bulk Supply for Industrial Use
China Factory Direct
 |
|
| CAS number | 7783-11-1 |
| Product name | AMMONIUM SULFITE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeElectronic 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) |
QUOTE TYPE
PACKAGING TYPE
TOTAL QUANTITY(KG)
PREFERRED SHIPPING METHOD
YOUR COMPANY
YOUR E-MAIL
Calculate Summary
Based on current marketvolatility and material availability.
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 |
|---|---|---|
| Chemical | Reducing agent | Used as a reducing agent in organic synthesis, participating in sulfidation reactions or removal of oxidized functional groups |
| Textile | Bleaching aid | Applied as a stabilizer and reducing bleaching auxiliary in the bleaching of natural fibers such as wool and silk |
| Pulp & Paper | Dechlorinating agent | Employed in the washing stage following pulp bleaching to remove residual chlorine and minimize environmental impact |
| Food Industry | Food additive (preservative and antioxidant) | Approved for use in certain food products as a preservative and antioxidant to control microbial growth and delay oxidative spoilage |
| Water Treatment | Reducing agent | Utilized to remove residual chlorine and heavy metal ions from water, serving as a dechlorination and reduction treatment chemical |
| Photographic Industry | Fixer component | Used as a preservative in black-and-white film fixing solutions to prevent oxidation of developing agents |
Manufacturing Quality Control of AMMONIUM SULFITE
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (NH4)2SO3.H2O | Acid-Base Titration | Direct titration with standardized HCl using methyl orange indicator; based on neutralization of sulfite ion. |
| pH (10% w/v aqueous solution) | pH Meter Measurement | Electrochemical measurement of hydrogen ion activity in a defined aqueous solution. |
| Moisture Content | Karl Fischer Titration | Volumetric or coulometric determination of water via iodine-sulfur dioxide reaction in pyridine-methanol medium. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of trace metal impurities by absorption of characteristic wavelength light after atomization. |
| Iron (Fe) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Multi-element detection based on atomic emission intensity at element-specific wavelengths after plasma atomization. |
| Chloride (Cl-) | Potentiometric Titration with AgNO3 | Titration using silver nitrate and silver electrode detection of endpoint via potential change. |
| Sulfate (SO4^2-) | Gravimetric Analysis | Precipitation as BaSO4 followed by filtration, drying, and weighing of the stable precipitate. |
| Ammonia (NH3) Volatility | Distillation-Titration | Steam distillation of free ammonia into boric acid, followed by acid titration. |
| Residue on Ignition | Gravimetric Analysis | Heating sample to 500-600 C to oxidize organics and volatiles, then weighing inorganic residue. |
| Particle Size Distribution | Laser Diffraction | Analysis of light scattering pattern from suspended particles to determine size distribution. |
| Appearance | Visual Inspection | Subjective assessment of physical state, color, and presence of foreign matter under controlled lighting. |
| Bulk Density | Tap Density Measurement | Mass per unit volume measured after standardized tapping of a known mass in a graduated cylinder. |
Technical Specifications of AMMONIUM SULFITE
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic ammoniacal odor |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
|
|
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.
Use Bulk
Supply Factory
Direct ISO 9001
Certified Samples
Available Stable
Supply