3-Methyltetrahydrophthalic anhydride Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 5333-84-6 |
| Product name | 3-Methyltetrahydrophthalic anhydride |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeElectronic GradeFood 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 3-Methyltetrahydrophthalic anhydride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 3-Methyltetrahydrophthalic anhydride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 3-Methyltetrahydrophthalic anhydride
| Industry | Application | Process |
|---|---|---|
| Electronics & Electrical | Epoxy resin curing agent to enhance thermal resistance and electrical insulation | Reaction of epoxy resin with 3-methyltetrahydrophthalic anhydride to form a crosslinked network structure |
| Construction Materials | Modified curing agent for coatings and adhesives | Blended with epoxy resin to improve adhesion, chemical resistance, and mechanical properties |
| Automotive | Curing agent for automotive coatings and sealants | Combined with epoxy or polyurethane systems to enhance weather resistance and impact resistance |
| Aerospace | Resin matrix curing agent for high-performance composites | Formulated with epoxy resin to achieve high specific strength and elevated-temperature resistance |
| Food Packaging | Curing agent for food-contact coatings (restricted to specific applications) | Applied to interior coatings under regulatory compliance following rigorous purification |
| Optical Materials | Curing agent for optical resins and lens molding | Delivers low shrinkage and high transparency to meet optical performance requirements |
Manufacturing Quality Control of 3-Methyltetrahydrophthalic anhydride
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantitative determination based on peak area comparison against a certified reference standard using a non-polar capillary column. |
| Acid Number | Acid-Base Titration with KOH in isopropanol | Neutralization of acidic functional groups by standardized potassium hydroxide solution, detected potentiometrically or with phenolphthalein indicator. |
| Water Content | Karl Fischer Coulometric Titration | Electrochemical generation and reaction of iodine with water in anhydrous methanol-based reagent; water quantified via coulometric current integration. |
| Color (APHA) | Visual Comparison or Spectrophotometric Measurement at 430 nm | Measurement of yellowness intensity relative to platinum-cobalt standards using APHA scale or absorbance at specified wavelength. |
| Density at 20 degC | Digital Density Meter (Oscillating U-tube principle) | Determination of mass per unit volume from the resonant frequency shift of a vibrating U-shaped tube filled with sample. |
| Refractive Index at 20 degC | Abbe Refractometer | Measurement of light bending angle at air-sample interface to determine refractive index under controlled temperature. |
| Residue on Evaporation | Gravimetric Analysis (Hot Plate Evaporation) | Evaporation of a known sample mass to dryness under controlled heating, followed by weighing of non-volatile residue. |
| Chloride Content | Ion Chromatography (IC) with Conductivity Detection | Separation of chloride anions on anion-exchange column and quantification via conductivity response relative to calibration standards. |
| Heavy Metals (as Pb) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Atomization and excitation of metals in high-temperature plasma; detection based on element-specific emission wavelengths. |
| Residual Solvents (e.g., toluene, xylene) | Headspace Gas Chromatography (HS-GC) with FID | Thermal equilibration of sample in sealed vial, followed by GC analysis of volatile organic compounds in headspace vapor. |
| Melting Point | Capillary Melting Point Apparatus | Determination of solid-to-liquid transition temperature range by visual observation of sample behavior during controlled heating. |
| Specific Optical Rotation | Polarimeter | Measurement of angular rotation of plane-polarized light passing through a solution of chiral compound at specified concentration and path length. |
Technical Specifications of 3-Methyltetrahydrophthalic anhydride
| Test Item | Specification |
|---|---|
| Appearance | Colorless to pale yellow liquid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Acid Value (mg KOH/g) | 370-390 |
| Refractive Index (n20/D) | 1.492-1.496 |
| Relative Density (20°C/25°C) | 1.125-1.135 g/cm³ |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Odor | Characteristic mild anhydride 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 3-Methyltetrahydrophthalic anhydride
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 3-Methyltetrahydrophthalic anhydride
Safety Information of 3-Methyltetrahydrophthalic anhydride
| Pictograms |   |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of 3-Methyltetrahydrophthalic anhydride
Industrial 3-Methyltetrahydrophthalic 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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