China Factory Direct
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| CAS number | 503-87-7 |
| Product name | 2-Thiohydantoin |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeIndustrial GradeReagent Grade |
| Packaging | 25KG/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 |
|---|---|---|
| Pharmaceuticals | Synthesis of antithyroid drugs | Used as an intermediate in the synthesis of methimazole |
| Pesticides | Preparation of fungicides | Applied in the synthesis of thiocarbamate compounds |
| Rubber industry | Vulcanization accelerator | Used in rubber vulcanization processes |
| Chemical reagents | Organic synthesis reagent for laboratory use | Employed to construct sulfur-containing heterocyclic compounds |
| Polymer materials | Modifier | Used to introduce sulfur-containing functional groups |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with NaOH | Neutralization of acidic protons in 2-thiohydantoin using standardized sodium hydroxide solution, with potentiometric or visual endpoint detection. |
| Moisture Content | Karl Fischer Titration | Quantitative reaction of water with iodine and sulfur dioxide in a methanol-based reagent, measured electrometrically. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Measurement of absorbance of ground-state atoms vaporized in a flame or graphite furnace, calibrated against lead standards. |
| Sulfur Content | Oxidative Combustion followed by Ion Chromatography | Complete combustion to sulfate, followed by ion chromatographic separation and conductivity detection. |
| Residue on Ignition | Gravimetric Analysis | Heating sample at 700-800 C to oxidize organic matter; residue mass determined after cooling and weighing. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Precipitation titration using silver nitrate, with endpoint detected by silver ion-selective electrode. |
| Melting Point | Capillary Melting Point Determination | Thermal transition observed visually or optically as solid transforms to liquid in a calibrated capillary apparatus. |
| Organic Volatile Impurities | Gas Chromatography (GC) with FID | Separation and quantification of volatile impurities based on retention time and flame ionization response. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light induced by chiral centers in solution at specified concentration and path length. |
| pH of Aqueous Suspension | pH Meter Measurement | Electrochemical measurement of hydrogen ion activity in a saturated aqueous suspension using calibrated glass electrode. |
| Particle Size Distribution | Laser Diffraction | Analysis of angular scattering pattern of laser light passed through dispersed particles to determine size distribution. |
| Related Substances | High Performance Liquid Chromatography (HPLC) with UV Detection | Separation on reversed-phase column and quantification of impurities using UV absorbance at characteristic wavelength. |
| Test Item | Specification |
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| Appearance | Orange solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 215-219°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic sulfurous 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.