5-Methylisophthalic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 499-49-0 |
| Product name | 5-Methylisophthalic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial 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 5-Methylisophthalic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 5-Methylisophthalic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 5-Methylisophthalic acid
| Industry | Application | Process |
|---|---|---|
| Polymers | Monomer for polyester resins, used in the production of high-performance polyester fibers and engineering plastics | Melt polycondensation with diols (e.g., ethylene glycol, 1,4-butanediol) |
| Coatings | Modified monomer for waterborne and solventborne coatings, enhancing weather resistance and adhesion | Used as a comonomer in acrylic–polyester hybrid emulsion polymerization or in polyol synthesis |
| Pharmaceutical Intermediates | Structural building block for antitumor agents (e.g., PARP inhibitor analogs) and nonsteroidal anti-inflammatory drugs | Multistep organic synthesis, including acid chloride formation, aminolysis, or palladium-catalyzed coupling |
| Liquid Crystal Materials | Rigid biphenyl/cyclohexylbenzene derivative used as a building block in liquid crystal monomer synthesis | Functional group transformations—such as nitration–reduction–diazotization–hydroxylation or direct halogenation–coupling—to introduce the liquid crystal core scaffold |
Manufacturing Quality Control of 5-Methylisophthalic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with NaOH | Quantifies carboxylic acid groups by neutralization with standardized sodium hydroxide solution using phenolphthalein indicator. |
| Moisture Content | Karl Fischer Titration | Measures water content via coulometric or volumetric reaction between water and iodine generated in situ from KF reagent. |
| Heavy Metals | ICP-OES | Determines trace metal impurities (e.g., Pb, Fe, Cu) by plasma excitation and elemental emission intensity measurement. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue after high-temperature incineration at 700-800 C. |
| Chloride Impurity | Ion Chromatography (IC) | Separates and quantifies chloride ions based on anion exchange retention and conductivity detection. |
| Sulfated Ash | Gravimetric Analysis | Measures ash content after ignition with sulfuric acid pretreatment to convert metals to sulfates. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid, indicating purity and identity. |
| Organic Impurities (Related Substances) | HPLC with UV Detection | Separates and quantifies structurally related compounds using reversed-phase chromatography and UV absorbance at 254 nm. |
| Iron Content | AAS (Flame Atomic Absorption Spectroscopy) | Quantifies iron by measuring absorption of characteristic wavelength light by ground-state Fe atoms in acetylene-air flame. |
| Appearance | Visual Inspection | Assesses physical state, color, and presence of foreign particles under controlled white light against standard references. |
| pH of Aqueous Suspension | pH Meter Measurement | Measures hydrogen ion activity in a defined suspension (e.g., 1% w/v in water) using calibrated pH electrode. |
| Particle Size Distribution | Laser Diffraction | Determines size distribution by analyzing angular variation in laser light scattering from dispersed particles in liquid medium. |
Technical Specifications of 5-Methylisophthalic acid
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (by LC-MS) |
| Melting Point | 227–231°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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 5-Methylisophthalic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 5-Methylisophthalic acid
Packaging of 5-Methylisophthalic acid
Industrial 5-Methylisophthalic acid 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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