HQDA Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 17828-53-4 |
| Product name | HQDA |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial GradeElectronic Grade |
| Packaging | 25KG/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 HQDA
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk HQDA Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of HQDA
| Industry | Application | Process |
|---|---|---|
| Plastics Industry | Crosslinking agent for polyester resins | Used in the curing process of thermosetting resins |
| Coatings Industry | Epoxy resin curing agent | Reacts with epoxy resins to form a three-dimensional network structure |
| Electronic Materials | Production of solder masks for printed circuit boards | Involved in photolithography to form high-temperature- and corrosion-resistant coatings |
| Adhesives | Component of high-performance adhesives | Used in the synthesis of structural and high-temperature adhesives |
| Polymer Materials | Synthesis of specialty polyimides | Participates in condensation polymerization under elevated temperatures |
| Lubricant Additives | Enhances antioxidant performance of lubricants | Added to lubricants to improve thermal and oxidative stability |
Manufacturing Quality Control of HQDA
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC with UV detection | Quantitative determination using reverse-phase HPLC and UV absorbance at 254 nm relative to a certified reference standard. |
| Moisture Content | Karl Fischer titration | Electrochemical titration measuring water content via iodine-sulfur dioxide reaction in anhydrous methanol-based solvent. |
| Residue on Ignition | Gravimetric analysis | Weight loss after high-temperature ashing (750-800 C) indicates inorganic impurities. |
| Heavy Metals | ICP-OES | Multi-element quantification of Pb, Cd, Hg, As, and Cr by plasma excitation and optical emission spectroscopy. |
| Chloride Impurity | Ion Chromatography | Separation and quantification of chloride ions using anion-exchange column and conductivity detection. |
| Melting Point | Capillary melting point apparatus | Thermal transition observed as the temperature range at which solid phase converts to liquid under controlled heating. |
| Acid Number | Acid-base titration | Neutralization of acidic functional groups with standardized KOH solution using phenolphthalein indicator. |
| Color (APHA) | Visual comparison or spectrophotometric measurement | Comparison of sample solution color intensity against APHA platinum-cobalt standards at 430 nm. |
| Particle Size Distribution | Laser diffraction | Analysis of scattered light patterns from dispersed particles to calculate size distribution by Mie theory. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Separation and quantification of residual solvents using capillary column and flame ionization detection. |
| Sulfated Ash | Gravimetric analysis | Weight of residue after combustion with sulfuric acid treatment followed by incineration at 750 C. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light induced by chiral impurities in solution at specified wavelength and temperature. |
Technical Specifications of HQDA
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow Solid |
| ldentification(NMR) | Conforms to structure |
| Purity | ≥95.0% |
| Total of impurities | Maximum 1.00 percent |
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 HQDA
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of HQDA
Packaging of HQDA
Industrial HQDA 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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