HPMDA Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 2754-41-8 |
| Product name | HPMDA |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeMaterial GradeElectronic 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 HPMDA
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk HPMDA Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of HPMDA
| Industry | Application | Process |
|---|---|---|
| Polymers | Monomer for polyimide resins | Undergoes condensation polymerization with diamines (e.g., 4,4'-oxydianiline) in polar solvents to form polyamic acid—the polyimide precursor—followed by thermal or chemical imidization to produce high-temperature-resistant polyimide films, adhesives, and composites |
| Electronics Packaging | Matrix resin for flexible copper-clad laminates (FCCL) | Acts as a tetrafunctional anhydride to build highly crosslinked polyimide backbones, enhancing dimensional stability, dielectric properties, and solder resistance for chip-on-film (COF) packaging base films |
| Aerospace | Component of high-temperature structural adhesives | Copolymerizes with aromatic diamines to form polyimide adhesive films with high glass transition temperature (Tg > 300 °C), enabling high-temperature bonding of metal and composite components via hot-press curing |
| Coatings | Modifier monomer for specialty heat-resistant insulating varnishes | Blended with epoxy or silicone resins; its ring-opening addition introduces rigid alicyclic structures to improve thermal oxidative stability and mechanical strength of motor winding impregnating varnishes |
Manufacturing Quality Control of HPMDA
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC with UV detection | Quantification based on peak area comparison against a certified reference standard using reversed-phase chromatography and UV absorbance at 220-230 nm. |
| Moisture Content | Karl Fischer titration | Electrochemical titration where iodine reacts stoichiometrically with water in a methanol-based solvent system. |
| Acid Number | Acid-base titration with NaOH | Neutralization of acidic functional groups (e.g., anhydride hydrolysis products) using standardized sodium hydroxide solution and potentiometric or phenolphthalein endpoint detection. |
| Residue on Ignition | Gravimetric analysis | Determination of non-volatile inorganic impurities by high-temperature ashing followed by weighing of residual mass. |
| Heavy Metals | ICP-OES | Multi-element quantification of metallic impurities (e.g., Pb, Cd, Fe, Cu) after acid digestion, based on atomic emission intensities at characteristic wavelengths. |
| Chloride Content | Ion Chromatography (IC) | Separation and quantification of chloride ions using anion-exchange column and conductivity detection after sample dissolution and dilution. |
| Melting Point | Capillary melting point apparatus | Thermal transition determination by observing the temperature range at which solid material transforms to liquid under controlled heating. |
| Color | APHA color scale (Visual or spectrophotometric) | Comparison of sample solution color intensity against platinum-cobalt standards using visual matching or spectrophotometric absorbance at 455 nm. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Separation and quantification of residual solvents and low-boiling organics using capillary column and flame ionization detection. |
| Particle Size Distribution | Laser diffraction | Analysis of scattered laser light intensity as a function of angle to determine volume-based particle size distribution in dispersed powder samples. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light induced by chiral centers in solution, expressed in degrees per dm per g/mL. |
| Residual Solvent (DMF, NMP) | Headspace GC-MS | Extraction and quantification of high-boiling polar solvents via headspace sampling followed by gas chromatographic separation and mass spectrometric detection. |
Technical Specifications of HPMDA
| Test Item | Specification |
|---|---|
| Appearance | Off-white crystalline solid |
| Purity | >=98.0% (by NMR) |
| Melting Point | 258-262 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Acid Value (mg KOH/g) | 420-440 mg KOH/g |
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 HPMDA
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of HPMDA
Packaging of HPMDA
Industrial HPMDA 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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