2,2'-[(1-Methylethylidene)bis[(dibromo-4,1-phenylene)oxymethylene]]bis[oxirane]-4,4'-(1-methylethylidene)bis[2,6-dibromophenol] copolymer Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 68928-70-1 |
| Product name | 2,2'-[(1-Methylethylidene)bis[(dibromo-4,1-phenylene)oxymethylene]]bis[oxirane]-4,4'-(1-methylethylidene)bis[2,6-dibromophenol] copolymer |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material 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) |
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Documents We Provide for 68928-70-1
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 68928-70-1 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 68928-70-1
| Industry | Application | Process |
|---|---|---|
| Electrical & Electronics | Flame retardant for printed circuit board (PCB) substrates | Blended with epoxy resin and processed into copper-clad laminates via thermal curing |
| Plastics Industry | Additive for highly flame-retardant engineering plastics | Blended with polycarbonate, ABS, etc., and shaped via injection molding or extrusion |
| Coatings Industry | Functional component in flame-retardant coatings | Mixed with film-forming resins and cured into a coating film via spray or roll coating |
| Composites | Enhances flame retardancy of composite materials | Blended with unsaturated polyester or epoxy resin and shaped via compression molding or pultrusion |
Manufacturing Quality Control of 68928-70-1
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Assessment of physical state, color, and homogeneity under controlled lighting conditions. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid using calibrated capillary tube method. |
| Acid Value | Acid-Base Titration with KOH in ethanol | Quantification of free carboxylic acid groups by titration with standardized potassium hydroxide solution. |
| Epoxy Equivalent Weight | Potentiometric Titration with HBr in acetic acid | Measurement of epoxy group concentration via addition reaction with hydrogen bromide followed by potentiometric endpoint detection. |
| Bromine Content | Oxygen Flask Combustion followed by Potentiometric Titration | Total bromine determined after sample combustion in oxygen, absorption in alkali, and titration of bromide ions. |
| Viscosity | Rotational Viscometry | Measurement of resistance to flow under defined shear rate and temperature using calibrated rotational viscometer. |
| Molecular Weight Distribution | Gel Permeation Chromatography (GPC) | Separation of polymer chains by hydrodynamic volume in solution, calibrated against polystyrene standards. |
| Residual Solvents | Gas Chromatography (GC) with FID | Identification and quantification of volatile organic solvents based on retention time and flame ionization response. |
| Moisture Content | Karl Fischer Coulometric Titration | Electrochemical determination of water content by iodine generation and stoichiometric reaction with water. |
| Heavy Metals (Pb, Cd, Hg, Cr) | ICP-OES after Microwave-Assisted Acid Digestion | Quantification of trace metals following sample decomposition and elemental analysis via inductively coupled plasma optical emission spectrometry. |
| Ash Content | Gravimetric Analysis after Muffle Furnace Incineration | Determination of inorganic residue mass remaining after high-temperature combustion at 550-600 C. |
| Thermal Stability | Thermogravimetric Analysis (TGA) | Measurement of mass loss as a function of temperature under controlled atmosphere to assess decomposition onset and profile. |
Technical Specifications of 68928-70-1
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 175–185°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.3% |
| Acid Value (mg KOH/g) | <=1.0 |
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 68928-70-1
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of 68928-70-1
Industrial 68928-70-1 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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