(1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 3794-83-0 |
| Product name | (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty 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 (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt
| Industry | Application | Process |
|---|---|---|
| Water Treatment | Scale Inhibitor | Prevents calcium and magnesium deposition in recirculating cooling water systems |
| Construction Materials | Concrete Additive | Enhances concrete workability and compressive strength |
| Petrochemical | Corrosion Inhibitor | Applied to equipment and piping for corrosion protection |
| Metalworking | Surface Treatment | Used for metal cleaning and rust prevention |
| Textiles | Stabilizer | Employed as a stabilizer in dyeing and finishing processes |
| Pharmaceuticals | Pharmaceutical Synthesis Intermediate | Utilized in the synthesis of certain active pharmaceutical ingredients |
| Food Industry | Preservative | Applied to food packaging materials for preservation |
Manufacturing Quality Control of (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt
| Test Item | Common Testing Method | Method Description |
|---|---|---|
| Appearance | Visual Inspection | The sample is placed in a clean, colorless transparent container and visually examined under natural light or fluorescent light to observe its color and state. It should appear as a white crystalline powder or a colorless to pale yellow transparent liquid (depending on the dosage form). |
| Main Content (HEDP-Na4) | Complexometric Titration (EDTA Titration Method) | In weakly acidic conditions, excess lead ions are complexed with HEDP, and the remaining lead ions are titrated with a standard EDTA solution to calculate the HEDP content. This method is suitable for quantitative analysis of the tetrasodium salt form. |
| pH Value | pH Meter Method | A sample water solution of certain concentration (usually 1%) is thermostated at 25°C, and its pH value is measured using a calibrated pH meter, which is generally between 9.0 and 11.0. |
| Chlorides | Silver Nitrate Turbidity Method | In nitric acid medium, chlorides react with silver nitrate to form a turbid silver chloride precipitate. The turbidity is compared with a standard chloride turbidity solution to control impurity limits. |
| Sulfates | Barium Chloride Turbidity Method | In hydrochloric acid medium, sulfates react with barium chloride to form a barium sulfate precipitate. The turbidity is measured by turbidimetry and compared with a standard sulfate solution to determine the limit. |
| Iron Content | Thiocyanate Colorimetric Method | In acidic conditions, iron ions react with potassium thiocyanate to form a red complex. The absorbance is measured at 480 nm using a spectrophotometer to quantify the iron impurity. |
| Heavy Metals (as Pb) | Sulfide Colorimetric Method (Chinese Pharmacopoeia Method) | In weakly acidic conditions, heavy metals react with sodium sulfide to form a brown-black sulfide precipitate. The result is compared with a standard lead solution to determine whether it meets the limit requirements. |
| Loss on Drying | Oven Drying Method (Gravimetric Method) | A sample is dried at 105°C in an oven until constant weight is achieved. The weight loss is calculated to determine the moisture and volatile matter content, typically not exceeding 1.0% (for solid samples). |
| Ignition Residue | Gravimetric Method (High-Temperature Incineration) | The sample is carbonized and treated with sulfuric acid, then incinerated at 600–800°C in a high-temperature furnace until constant weight is achieved. The residue mass is weighed to assess the total inorganic impurities. |
| Chelating Capacity (Calcium Chelating Value) | Calcium Ion Titration Method | An excess of calcium chloride is added under specific conditions. HEDP complexes with Ca²⁺, and the unbound calcium ions are titrated with EDTA. The calcium milligrams chelated per gram of sample are calculated to reflect product performance. |
Technical Specifications of (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (by NMR) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.2% |
| 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 (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt
Safety Information of (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt
| Pictograms |  |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt
Industrial (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt 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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