China Factory Direct
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| CAS number | 16219-75-3 |
| Product name | 5-ETHYLIDENE-2-NORBORNENE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeReagent 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) |
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 pharmaceutical intermediates for antitumor, antiviral, and other drugs | Chemical synthesis, catalytic reactions |
| Materials Science | Monomer or additive for high-performance polymers, resins, and specialty materials | Polymerization, copolymerization |
| Research & Development | Building block in organic synthesis for complex molecular structure studies | Laboratory-scale synthesis, analytical testing |
| Fine Chemicals | Intermediate for fragrances, dyes, and other high-value chemicals | Catalytic hydrogenation, functional group transformation |
| Detection Item | Common Analytical Method | Method Overview |
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| Assay (Purity) | Gas Chromatography (GC) with FID detector | Quantitative determination based on peak area comparison against a certified reference standard under validated chromatographic conditions. |
| Residual Solvents | Headspace Gas Chromatography (HS-GC) | Volatile organic impurities are equilibrated in headspace vial and quantified by GC-FID or GC-MS using calibrated standards. |
| Water Content | Karl Fischer Titration (Coulometric) | Electrochemical titration where iodine generated coulometrically reacts stoichiometrically with water in the sample. |
| Heavy Metals (as Pb) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Sample digested in acid matrix; metals atomized and excited in plasma, with emission intensity proportional to concentration. |
| Chloride Impurity | Ion Chromatography (IC) with Conductivity Detection | Chloride ions separated on anion-exchange column and detected via changes in solution conductivity. |
| Acid Value | Acid-Base Titration (NaOH in ethanol/water) | Free acidic groups neutralized with standardized sodium hydroxide solution; endpoint detected potentiometrically or with phenolphthalein. |
| Color (APHA) | Visual Comparison or Spectrophotometric Measurement at 455 nm | Comparison of sample color to APHA platinum-cobalt standard scale using spectrophotometer or calibrated colorimeter. |
| Specific Optical Rotation | [a]D at 20 C | Measurement of rotation angle of plane-polarized light passing through a solution in a polarimeter; indicates chiral purity and identity. |
| Residue on Ignition | Gravimetric Analysis (Weight Loss on Ignition) | Sample ignited at 700-800 C; residue weight measured after cooling in desiccator to determine inorganic ash content. |
| Related Substances | High Performance Liquid Chromatography (HPLC) with UV detection | Impurity profiling using reversed-phase HPLC; separation based on polarity, detection at characteristic UV wavelength (e.g., 210 nm). |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition observed as temperature range where solid transforms to liquid, indicating crystallinity and purity. |
| Bulk Density | ASTM D1895 Method A (Tapped Density) | Mass per unit volume measured after controlled tapping of a graduated cylinder containing the powder sample. |
| Test Item | Specification |
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| Appearance | Colorless liquid |
| Purity | >=98.5% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Identification (NMR) | Consistent with structure |
| Refractive Index (n20/D) | 1.475–1.485 |
| Odor | Characteristic hydrocarbon-like 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.