Hexahydrophthalic anhydride Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 85-42-7 |
| Product name | Hexahydrophthalic anhydride |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeElectronic 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 Hexahydrophthalic anhydride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Hexahydrophthalic anhydride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Hexahydrophthalic anhydride
| Industry | Application | Process |
|---|---|---|
| Coatings & Paints | Used as a curing agent for epoxy resins to enhance chemical resistance and mechanical performance of coatings | Reacts with epoxy groups in epoxy resin systems to form crosslinked structures |
| Electronic Encapsulation | Applied in encapsulation materials for semiconductors and electronic components to improve electrical insulation and thermal stability | Mixed with epoxy resin and cured at elevated temperature to form a dense protective layer |
| Adhesives | Used as a curing agent in high-performance adhesives to increase bond strength and durability | Mixed with epoxy resins or polyurethane prepolymers and cured at ambient temperature or with heat |
| Composites | Applied as a curing agent in fiber-reinforced composites to improve thermal performance and toughness | Blended with epoxy resin and processed via compression molding or vacuum bagging |
| Polymers | Used in the production of high-temperature- and corrosion-resistant polymers, such as engineering plastics | Reacted with polyols or polyamines to produce polyester or polyamide resins |
| Printed Circuit Boards (PCBs) | Used as a curing agent in solder mask inks and insulating coatings to enhance electrical insulation | Mixed with resin systems and cured by UV radiation or heat to form protective films |
Manufacturing Quality Control of Hexahydrophthalic anhydride
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color and state of the sample. Qualified products should be colorless to pale yellow transparent liquids with no visible impurities. |
| Color | Platinum-Cobalt Color Scale (GB/T 3143 or APHA) | Compare the sample with standard platinum-cobalt solutions to determine color intensity, used to assess product purity and oxidation level. |
| Content (Purity) | Gas Chromatography (GC) | Utilize capillary column gas chromatography with internal or external standard methods to quantify hexahydrophthalic anhydride content; can simultaneously detect impurities, offering high accuracy and widespread application. |
| Acid Value (Total Acid Value) | Acid-Base Titration | Titrate the sample with standardized potassium hydroxide in ethanol solution to calculate acid value (mg KOH/g), reflecting the content of anhydride groups and indirectly evaluating purity. |
| Moisture Content | Karl Fischer Titration | Quantitatively determine trace moisture in the sample using an electrochemical reaction; suitable for low moisture content detection with high precision. |
| Impurity Analysis | Gas Chromatography-Mass Spectrometry (GC-MS) | Perform qualitative and quantitative analysis of volatile impurities (e.g., incompletely hydrogenated phthalic anhydride, isomers, etc.) with high sensitivity. |
| Density | Density Bottle Method or Digital Density Meter | Measure mass per unit volume at a specified temperature (e.g., 25°C) for quality consistency control. |
| Refractive Index | Abbe Refractometer Method | Measure refractive index at a specific temperature as a physical constant to assist in judging sample purity and consistency. |
| Melting Point / Freezing Point | Melting Point Apparatus | Hexahydrophthalic anhydride is typically a liquid, but certain isomers or high-purity forms may exhibit a freezing point, used for identification and purity verification. |
| Volatile Matter and Thermal Stability | Thermogravimetric Analysis (TGA) | Measure mass changes of the sample under programmed heating to evaluate thermal decomposition temperature and content of volatile components. |
Technical Specifications of Hexahydrophthalic anhydride
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.5% (GC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 130.0 - 134.0 °C |
| Acid Value (mg KOH/g) | 650 - 670 mg KOH/g |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic mild odor |
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 Hexahydrophthalic anhydride
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| Lot/Batch Number | *Required fields | |
NMR Spectra of Hexahydrophthalic anhydride
Packaging of Hexahydrophthalic anhydride
Industrial Hexahydrophthalic anhydride 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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