Sodium hydroxymethanesulphinate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 149-44-0 |
| Product name | Sodium hydroxymethanesulphinate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial 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 Sodium hydroxymethanesulphinate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Sodium hydroxymethanesulphinate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Sodium hydroxymethanesulphinate
| Industry | Application | Process |
|---|---|---|
| Textile Dyeing and Printing | Reducing agent, discharge agent | Applied in reductive dyeing of reactive and sulfur dyes, as well as discharge printing, by providing reducing sulfinic acid groups to reduce dyes |
| Pharmaceutical Intermediates Synthesis | Reducing agent | Used for selective reduction of functional groups such as nitro and azo groups in the synthesis of vitamin B1, sulfonamides, and other pharmaceutical intermediates |
| Electroplating Industry | Complexing agent and brightener component | Added to nickel and copper electroplating baths to improve coating uniformity and brightness, with formaldehyde groups participating in complexation to stabilize metal ions |
| Pesticide Synthesis | Reducing agent and formylating agent | Applied in reduction and formylation reactions for intermediates of organophosphorus and carbamate pesticides |
| Rubber Industry | Accelerator assistant for vulcanization | Used in combination with accelerators such as tetramethylthiuram disulfide (TMTD) to enhance vulcanization efficiency and improve physical properties of rubber compounds |
Manufacturing Quality Control of Sodium hydroxymethanesulphinate
| Test Item | Common Test Methods | Method Overview |
|---|---|---|
| Active Ingredient Content | Iodometric Method | Utilizes sodium formaldehyde sulfoxylate to reduce iodine under acidic conditions. The content is calculated based on the volume of iodine standard solution consumed during titration. It is a sensitive and simple method, widely used as a classical quantitative approach. |
| Formaldehyde Content | Acetylacetone Spectrophotometry | Under the presence of excess ammonium salts, formaldehyde reacts with acetylacetone to form a yellow complex. The absorbance is measured at 412~415 nm, and the formaldehyde residue is quantified using a standard curve. |
| Sulfur Dioxide Residue | Pararosaniline Hydrochloride Colorimetric Method | The sample is acidified and distilled to release SO₂, which reacts with pararosaniline and formaldehyde to form a purple-red compound. The concentration is determined by colorimetry at 550 nm, commonly used for SO₂ detection in food and chemicals. |
| Heavy Metals (e.g., Lead, Arsenic) | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After digestion, the specific heavy metal content is determined using an atomic absorption spectrometer or inductively coupled plasma mass spectrometer (ICP-MS), meeting pharmacopoeia or industrial product safety standards. |
| pH Value | pH Meter Method | A solution of certain concentration is prepared, and the acidity or alkalinity is directly measured using a calibrated pH meter, reflecting product stability and purity. |
| Moisture Content | Karl Fischer Titration | Karl Fischer reagent reacts quantitatively with moisture in the sample. The endpoint is determined either potentiometrically or visually, allowing precise measurement of water of crystallization or adsorbed water. |
| Appearance and Solubility | Visual and Solubility Test | Observe whether the product is white crystals or powder, check for caking or discoloration; test dissolution rate and clarity in water to preliminarily assess physical state and purity. |
| Stability Testing | Accelerated Stability Testing (High Temperature/Light) | Samples are stored under specified temperature, humidity, or light conditions. Active ingredient changes are periodically monitored to evaluate product storage stability and shelf life. |
Technical Specifications of Sodium hydroxymethanesulphinate
| Test Item | Specification |
|---|---|
| Appearance | White to almost white crystalline powder |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic, faint sulfur-like 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 Sodium hydroxymethanesulphinate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Safety Information of Sodium hydroxymethanesulphinate
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of Sodium hydroxymethanesulphinate
Industrial Sodium hydroxymethanesulphinate 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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