Formaldehyde sodium bisulfite Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 870-72-4 |
| Product name | Formaldehyde sodium bisulfite |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial GradeCosmetic 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 Formaldehyde sodium bisulfite
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Formaldehyde sodium bisulfite Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Formaldehyde sodium bisulfite
| Industry | Application | Process |
|---|---|---|
| Cosmetics | Preservative, antimicrobial agent | Added to formulations and dissolved in the aqueous phase |
| Household cleaning products | Detergent, performance enhancer | Used in combination with other surfactants |
| Textile industry | Dyeing auxiliary, leveling agent | Added to dye baths as an additive |
| Pharmaceutical industry | Intermediate, disinfectant | Used directly after dilution or in synthetic reactions |
| Water treatment | Biocide, microbiostat | Dosed into circulating water systems or treatment basins |
| Petrochemical industry | Corrosion inhibitor, scale inhibitor | Added to process fluids for protection |
Manufacturing Quality Control of Formaldehyde sodium bisulfite
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, physical state (e.g., white crystals or powder), and presence of foreign matter or clumping to preliminarily assess purity and storage condition. |
| Assay | Acid-base Titration / Iodometric Titration | Utilize its reducing properties to react with iodine standard solution under acidic conditions, and calculate the content of active ingredient via titration; or use acid-base titration to determine total acid/base equivalents. |
| pH Value | pH Meter Method | Prepare a solution of specified concentration (e.g., 10%), and measure its acidity or alkalinity using a calibrated pH meter to evaluate product stability and the influence of impurities. |
| Loss on Drying | Gravimetric Method (Oven Drying) | Dry the sample at a specified temperature (e.g., 105°C) until constant weight is achieved, and calculate the percentage of mass loss to determine moisture and volatile substance content. |
| Residue on Ignition (Sulfated Ash) | Gravimetric Method (Muffle Furnace Ignition) | Ignite the sample at high temperature (e.g., 800°C) and weigh the residual residue to assess the total content of inorganic salt impurities. |
| Heavy Metal Content | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After sample digestion, determine the concentrations of heavy metal elements such as lead, arsenic, mercury, and cadmium using atomic absorption or inductively coupled plasma mass spectrometry to ensure compliance with pharmacopeial or industry standards. |
| Chloride Content | Silver Nitrate Titration (Mohr's Method) | In a nitric acid medium, titrate chloride ions with silver nitrate standard solution using potassium chromate as an indicator to evaluate the level of chloride impurities in the raw material. |
| Sulfate Content | Gravimetric Method (Barium Chloride Precipitation) | Add barium chloride to precipitate sulfate ions as barium sulfate, filter, wash, ignite, and weigh the residue to calculate sulfate impurity content. |
| Formaldehyde Residue | Spectrophotometry (Acetylacetone Method) | React with acetylacetone in an ammonium acetate buffer to form a yellow complex, and quantify free formaldehyde residue by measuring absorbance at 412 nm. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase chromatographic column with a UV detector (e.g., 210 nm) to separate and quantify the main component and related impurities, evaluating product purity. |
| Insoluble Matter in Water | Filtration-Gravimetric Method | Dissolve the sample in water, filter, dry, and weigh the insoluble residue to assess mechanical impurities or poorly soluble contaminants. |
Technical Specifications of Formaldehyde sodium bisulfite
| Test Item | Specification |
|---|---|
| Appearance | White to almost white powder or crystals |
| Purity | >=98.0% (T) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
| Odor | Characteristic, non-offensive |
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 Formaldehyde sodium bisulfite
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Formaldehyde sodium bisulfite
Safety Information of Formaldehyde sodium bisulfite
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of Formaldehyde sodium bisulfite
Industrial Formaldehyde sodium bisulfite 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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