China Factory Direct
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| CAS number | 110-21-4 |
| Product name | BIUREA |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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) |
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 |
|---|---|---|
| Pesticides | Intermediate for synthesizing fungicides (e.g., thiram, ziram) | Condensation reaction with carbon disulfide and metal salts under alkaline conditions |
| Rubber Industry | Raw material for rubber vulcanization accelerators (e.g., TMTD, TETD) | Oxidative condensation with carbon disulfide and amines to produce dithiocarbamates |
| Pharmaceuticals | Intermediate for synthesizing antitubercular agents (e.g., isoniazid derivatives) and heterocyclic compounds | Participates in cyclization reactions or serves as a hydrazine-functional group introduction reagent |
| Blowing Agents | Key precursor for azodicarbonamide (AC blowing agent) production | Diazotization with sodium nitrite under acidic conditions, followed by condensation with urea |
| Organic Synthesis | Preparation of azo compounds, triazoles, and nitrogen-containing heterocycles | Acts as a bifunctional hydrazine reagent in condensation, cyclization, and oxidation reactions |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with HCl | Direct titration of hydrazine groups using standardized hydrochloric acid solution with methyl orange indicator. |
| Moisture Content | Karl Fischer Titration | Quantitative determination of water by reaction with iodine and sulfur dioxide in a methanol-based reagent. |
| Heavy Metals | ICP-OES | Multi-element detection of trace metals (e.g., Pb, Cd, As) after acid digestion and plasma excitation. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Titration with silver nitrate using a silver electrode to detect chloride ion endpoint. |
| Sulfate Impurity | Gravimetric Analysis | Precipitation as barium sulfate followed by filtration, drying, and weighing. |
| Residue on Ignition | Gravimetric Analysis | Weighing of non-volatile residue remaining after high-temperature ashing at 700-800 C. |
| Iron Content | AAS | Atomic absorption spectroscopy measurement of iron after sample dissolution and matrix matching. |
| pH of Aqueous Solution | pH Meter Measurement | Electrochemical measurement of hydrogen ion activity in a 1% w/v aqueous suspension. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity to determine size distribution of dry powder. |
| Bulk Density | Cylindrical Tap Density Test | Measurement of mass per unit volume after controlled tapping of a known mass in a calibrated cylinder. |
| Organic Volatile Impurities | GC-FID | Separation and quantification of residual solvents (e.g., ethanol, acetone) using gas chromatography with flame ionization detection. |
| Thermal Stability | TGA | Monitoring mass loss versus temperature under nitrogen to assess decomposition onset and profile. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 192-196°C |
| Total Impurities | <=2.0% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
| Odor | Characteristic, faint odor |
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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.