Zinc benzenesulfinate dihydrate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 24308-84-7 |
| Product name | Zinc benzenesulfinate dihydrate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial 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 Zinc benzenesulfinate dihydrate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Zinc benzenesulfinate dihydrate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Zinc benzenesulfinate dihydrate
| Industry | Application | Process |
|---|---|---|
| Rubber Industry | Vulcanization accelerator for rubber | Acts as an activator or co-accelerator for sulfenamide accelerators; used in combination with thiazole- and sulfenamide-type accelerators to enhance vulcanization rate and crosslink density |
| Organic Synthesis | Catalyst for organic reactions | Functions as a Lewis acid catalyst or ligand-assisted co-catalyst in Diels–Alder reactions, alkene epoxidation, and asymmetric synthesis |
| Electroplating Industry | Electroplating additive | Used as a brightener and leveling agent component in zinc–nickel alloy plating baths to improve coating uniformity and surface luster |
Manufacturing Quality Control of Zinc benzenesulfinate dihydrate
| Detection Item | Common Detection Method | Method Overview |
|---|---|---|
| Purity (Content) | High-Performance Liquid Chromatography (HPLC) | Using a C18 reverse-phase chromatography column, with methanol/water or acetonitrile/water as the mobile phase, and a UV detector (typically at 254 nm) to detect the main peak of zinc benzenesulfonate. Content is calculated using external standard or internal standard methods, offering high accuracy and good reproducibility. |
| Moisture Content | Karl Fischer Titration | Based on the principle that iodine reacts quantitatively with water in pyridine and methanol, this method uses potentiometric or coulometric titration to determine trace moisture in samples, suitable for precise determination of moisture in organic salts. |
| Heavy Metal Content | Atomic Absorption Spectrometry (AAS) or ICP-MS | After acid digestion of the sample, AAS is used to determine the concentration of heavy metal ions such as lead, cadmium, arsenic, and mercury, or ICP-MS is used for simultaneous detection of multiple elements, meeting pharmacopoeia or environmental standard limits. |
| Chloride and Sulfate Impurities | Ion Chromatography (IC) | Chloride and sulfate anions are separated by an anion exchange column and quantified using a conductivity detector, offering high sensitivity and the ability to simultaneously detect multiple anionic impurities, suitable for trace impurity control. |
| Residue on Ignition (Ash Content) | Ignition Weighing Method | The sample is heated to a high temperature (500–600°C) until constant weight is achieved; the residue represents inorganic impurities. The percentage of residue is calculated by weighing, reflecting the total amount of inorganic impurities and conforming to pharmacopoeia general monograph requirements. |
| pH Value | pH Meter Measurement | The sample is prepared as a solution of specified concentration (e.g., 1%), and the pH value is directly measured using a calibrated pH meter, assessing its acidity or alkalinity to ensure product stability and process consistency. |
| Solubility and Appearance | Visual Inspection + Solubility Test | Observe the color, crystal form, and presence of foreign matter in the sample; test its solubility in water, ethanol, acetone, etc. This serves as an initial quality assessment, complying with enterprise internal control standards. |
| Thermal Stability (Decomposition Temperature) | Thermogravimetric Analysis (TGA) | This method measures the mass change of the sample under programmed heating conditions to determine the onset decomposition temperature and weight loss stages, evaluating thermal stability and providing reference for process conditions and storage requirements. |
| Crystallization Water or Hydrate State | Differential Scanning Calorimetry (DSC) | By detecting heat absorption or release peaks during heating, this method identifies the presence of crystallization water and its dehydration temperature. Combined with TGA data, it confirms the hydrate form, which is important for batch consistency control. |
| Microbial Limits (If Applicable) | Plate Count Method / MPN Method | If used in pharmaceutical intermediates or food-related fields, bacterial count, mold and yeast, and E. coli are tested according to pharmacopoeia microbial limit standards to ensure biosafety. |
Technical Specifications of Zinc benzenesulfinate dihydrate
| Test Item | Specification |
|---|---|
| Appearance | White powder |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.3% |
| Identification (NMR) | Consistent with structure |
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 Zinc benzenesulfinate dihydrate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Zinc benzenesulfinate dihydrate
Safety Information of Zinc benzenesulfinate dihydrate
| Pictograms |   |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of Zinc benzenesulfinate dihydrate
Industrial Zinc benzenesulfinate dihydrate 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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