China Factory Direct
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| CAS number | 108-19-0 |
| Product name | Biuret |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
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| Fertilizer Industry | Nitrogen fertilizer additive to enhance the controlled-release performance of urea-based fertilizers | Controlled temperature and residence time during urea production to induce partial condensation of urea into biuret; or directly blended as an additive into urea-based compound fertilizers |
| Plastics and Resins Industry | Stabilizer, crosslinking agent, and epoxy resin curing accelerator for polyurethane foams | Acts as a co-crosslinking component in polyurethane foam formulations; synergizes with amine-based curing agents in epoxy resin systems to modulate cure rate and network structure |
| Pharmaceutical Intermediates | Starting material for synthesizing purine-based drugs (e.g., vidarabine) and antineoplastic compounds | Multi-step organic synthesis—including nitration, reduction, and cyclization—to construct nitrogen-containing heterocyclic frameworks |
| Water Treatment Chemicals | Chelating agent for metal ions (particularly Cu²⁺ and Ni²⁺), used for scale and corrosion inhibition in industrial recirculating cooling water systems | Forms stable complexes with metal ions to suppress deposition of metal oxides; typically dosed as an aqueous solution into the water system |
| Animal Feed Industry | Non-protein nitrogen (NPN) supplement (restricted to low concentrations due to potential toxicity) | Added at strictly controlled levels (typically <0.5%) and combined with energy-rich feedstuffs; slowly hydrolyzed to ammonia by ruminal microbial urease in ruminants for microbial utilization |
| Detection Item | Common Detection Methods | Method Overview |
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| Biuret Content | Ultraviolet-Visible Spectrophotometry | Under alkaline conditions, biuret reacts with copper ions (Cu²⁺) to form a purple-red complex, whose absorbance is measured at approximately 540 nm for quantitative analysis. This method is sensitive and easy to operate, suitable for detecting biuret impurities in urea and its derivatives. |
| Biuret Purity | High-Performance Liquid Chromatography (HPLC) | A reversed-phase C18 column is used with a mobile phase consisting of water/methanol or buffered solutions, and detection is performed using a UV detector (typically at 210–220 nm). This method effectively separates biuret from other urea by-products (e.g., cyanuric acid, melamine, etc.) to achieve high-precision quantification. |
| Biuret Qualitative Analysis | Chemical Colorimetric Method (Biuret Reaction) | Under alkaline conditions, a dilute copper sulfate solution is added; if the sample contains a biuret structure (with two or more amide bonds), a purple-red complex forms, enabling rapid qualitative determination. The intensity of the color can provide a rough estimate of concentration. |
| Biuret Residue | Fourier Transform Infrared Spectroscopy (FTIR) | Characteristic absorption peaks are analyzed: biuret exhibits typical peaks at 1630–1680 cm⁻¹ (C=O stretching vibration), 3100–3300 cm⁻¹ (N-H stretching), and 1400–1500 cm⁻¹ (N-H bending), enabling structural confirmation and impurity identification. |
| Biuret Thermal Stability | Thermogravimetric Analysis (TGA) | Measures mass changes of biuret during heating to evaluate its thermal decomposition temperature and stability, aiding in optimizing thermal processing conditions and ensuring quality consistency in production. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline powder |
| Purity | >=98.5% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 192-195°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.