China Factory Direct
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| CAS number | 78-19-3 |
| Product name | 3,9-Divinyl-2,4,8,10-tetraoxaspiro[5.5]undecane |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeMaterial GradeElectronic GradeSpecialty 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 |
|---|---|---|
| Polymers | Used as a crosslinker for modifying thermosetting resins such as polyurethane and epoxy | Introduces double bonds during polymerization to increase crosslink density and thermal resistance |
| Coatings & Inks | Used as a functional monomer to improve coating flexibility, adhesion, and chemical resistance | Participates in free-radical polymerization within UV-curable or thermally curable coating systems |
| Medical Devices | Used to produce biocompatible polymers for applications such as catheters and seals | Forms low-toxicity, highly stable polymer networks via controlled polymerization |
| Electronic Encapsulation | Used as a low-shrinkage, high-insulation resin component in semiconductor encapsulation materials | Participates in crosslinking reactions during compression molding to enhance mechanical strength and electrical performance |
| Adhesives | Used to formulate high-performance adhesives with improved bond strength and durability | Undergoes copolymerization or crosslinking via its double bond to form a dense crosslinked structure that enhances bonding performance |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | GC-FID | Quantification by gas chromatography with flame ionization detection using external standard calibration. |
| Water Content | Karl Fischer Titration | Coulometric or volumetric titration based on the reaction of iodine with water in a pyridine-methanol solvent system. |
| Residue on Ignition | Gravimetric Analysis | Measurement of non-volatile inorganic residue after high-temperature ashing at 700-800 C. |
| Acid Value | Acid-Base Titration | Neutralization of acidic impurities with standardized potassium hydroxide solution using phenolphthalein indicator. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Assessment of yellowness intensity by matching against platinum-cobalt standard solutions or measuring absorbance at 430 nm. |
| Density | Pycnometry | Determination of mass per unit volume using a calibrated glass pycnometer at specified temperature. |
| Refractive Index | Refractometry | Measurement of light bending angle at air-sample interface using a calibrated Abbe refractometer at 20 C. |
| Volatile Impurities | GC-MS | Identification and semi-quantification of low-boiling contaminants via capillary gas chromatography coupled to mass spectrometry. |
| Heavy Metals (as Pb) | AAS | Quantification of total heavy metals after wet digestion, using atomic absorption spectroscopy at element-specific wavelengths. |
| Chloride Content | Ion Chromatography | Separation and conductivity-based detection of chloride anions in aqueous extract after sample dissolution. |
| Peroxide Value | Iodometric Titration | Oxidation of potassium iodide by peroxides to liberate iodine, followed by titration with sodium thiosulfate. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity patterns to determine size distribution of suspended solid impurities. |
| Test Item | Specification |
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| Appearance | Off-white solid |
| Purity | >=98.0% (GC-MS) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Identification (IR) | Consistent with structure |
| Melting Point | 68–72°C |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
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.