CIS-STILBENE Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 645-49-8 |
| Product name | CIS-STILBENE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeIndustrial Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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 CIS-STILBENE
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk CIS-STILBENE Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of CIS-STILBENE
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Intermediates | Synthesis of drug molecules | Prepared via catalytic hydrogenation or oxidation reactions |
| Materials Science | Production of polymer materials | Synthesized into copolymers via free-radical polymerization |
| Fine Chemicals | Manufacture of dyes and coatings | Used as a reactive monomer in copolymerization with other compounds |
| Agrochemical Intermediates | Synthesis of active pharmaceutical ingredients (APIs) for agrochemicals | Prepared via substitution, addition, and other reactions to yield compounds with specific molecular structures |
Manufacturing Quality Control of CIS-STILBENE
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies cis-stilbene concentration using reverse-phase chromatography with UV detection at 254 nm, based on peak area comparison against a certified reference standard. |
| Identity Confirmation | FTIR Spectroscopy | Verifies molecular structure by matching characteristic absorption bands (e.g., C=C stretch ~1630 cm-1, aromatic C-H ~3050 cm-1) to reference spectrum. |
| Trans Isomer Content | GC-FID | Separates and quantifies trans-1,2-diphenylethylene impurity using capillary gas chromatography with flame ionization detection. |
| Residual Solvents | GC-FID | Detects and quantifies common process solvents (e.g., toluene, ethanol) via headspace or direct injection GC with FID. |
| Moisture Content | Karl Fischer Titration | Determines water content by coulometric or volumetric titration using iodine generated electrochemically in pyridine-free reagent. |
| Heavy Metals | ICP-OES | Measures total elemental impurities (Pb, Cd, Hg, As, Cr) after acid digestion, based on atomic emission intensity at element-specific wavelengths. |
| Acid Value | Acid-Base Titration | Quantifies acidic impurities by titrating with standardized KOH in ethanol/isopropanol, using phenolphthalein indicator. |
| Melting Point | Capillary Melting Point Apparatus | Determines purity-dependent solid-to-liquid transition temperature range using calibrated digital apparatus per USP <741>. |
| Appearance | Visual Inspection | Assesses physical state, color, and presence of particulates or phase separation against established visual standards under controlled lighting. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue after high-temperature ashing (700-800 C) and weighing of the cooled crucible. |
| Chloride Content | Ion Chromatography | Quantifies chloride ion impurity after sample dissolution and filtration, using conductivity detection with anion-exchange column. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution of solid batches in suspension using Mie scattering theory and calibrated optical system per ISO 13320. |
Technical Specifications of CIS-STILBENE
| Test Item | Specification |
|---|---|
| Appearance | Clear pale yellow liquid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 5°C to 7°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Identification (IR) | Consistent with structure |
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 CIS-STILBENE
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of CIS-STILBENE
Packaging of CIS-STILBENE
Industrial CIS-STILBENE 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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