3971-31-1 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 3971-31-1 |
| Product name | 3971-31-1 |
| 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 3971-31-1
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3971-31-1 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3971-31-1
| Industry | Application | Process |
|---|---|---|
| Chemicals | Raw material for polyester resin synthesis | Undergoes condensation polymerization with diols to produce polyester resins |
| Pharmaceuticals | Synthesis of pharmaceutical intermediates | Used as an organic synthesis intermediate in the preparation of specific drug molecules |
| Polymers | Production of high-performance polymers | Employed in the synthesis of polyamides, polyurethanes, and other high-performance polymers |
| Agricultural Chemicals | Synthesis of agrochemical intermediates | Serves as a precursor in the synthesis of herbicides or insecticides |
| Coatings | Preparation of coating resins | Used to produce coating resins with weather resistance and adhesion properties |
Manufacturing Quality Control of 3971-31-1
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration | Quantifies total acid content by neutralization with standardized NaOH solution using phenolphthalein indicator. |
| Water Content | Karl Fischer Titration | Determines water via iodometric reaction where iodine is consumed stoichiometrically by water in methanol/pyridine medium. |
| Appearance | Visual Inspection | Assesses physical state, color, and presence of visible particulates or foreign matter against standard white background under controlled lighting. |
| Melting Point | Capillary Melting Point Apparatus | Measures temperature range at which solid transitions to liquid using calibrated capillary tube and controlled heating rate. |
| Residue on Ignition | Gravimetric Analysis | Determines non-volatile inorganic impurities by ignition at 700-800 C and weighing residual ash after cooling in desiccator. |
| Heavy Metals | ICP-OES | Quantifies trace metal elements (e.g., Pb, Cd, Fe) by plasma excitation and emission spectral intensity measurement. |
| Chloride Impurity | Ion Chromatography | Separates and quantifies chloride ions using anion-exchange column and conductivity detection. |
| Sulfated Ash | Gravimetric Analysis | Measures inorganic residue after combustion with sulfuric acid pretreatment and high-temperature incineration. |
| Related Substances | HPLC-UV | Separates and detects organic impurities using reversed-phase column and UV absorbance detection at 210-230 nm. |
| Loss on Drying | Thermogravimetric Analysis | Measures mass loss upon heating at 105 C for 2 hours to determine volatile components including residual solvents. |
| pH of Aqueous Suspension | pH Meter Measurement | Determines acidity/basicity of saturated aqueous suspension using calibrated pH electrode and buffer standards. |
| Iron Content | AAS | Quantifies iron by atomic absorption at 248.3 nm after acid digestion and dilution to suitable concentration range. |
Technical Specifications of 3971-31-1
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.5% (HPLC) |
| Melting Point | 198–202°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Acid Value (mg KOH/g) | 375–385 mg KOH/g |
| Residue on Ignition | <=0.1% |
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 3971-31-1
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3971-31-1
Packaging of 3971-31-1
Industrial 3971-31-1 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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