Dimethyl isophthalate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 1459-93-4 |
| Product name | Dimethyl isophthalate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty 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 Dimethyl isophthalate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Dimethyl isophthalate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Dimethyl isophthalate
| Industry | Application | Process |
|---|---|---|
| Polyester Industry | Production of modified polyester resins | Copolymerized with terephthalic acid to enhance resin flexibility and heat resistance |
| Coatings Industry | Synthesis of unsaturated polyester resins | Used as a crosslinking monomer in the production of high-gloss, weather-resistant coatings |
| Plastics Industry | Preparation of engineering plastic intermediates | Converted into specialty polyester materials via transesterification or condensation polymerization |
| Pharmaceutical Chemicals | Synthesis of pharmaceutical intermediates | Processed through hydrolysis, reduction, and other steps to produce precursors of active pharmaceutical ingredients |
| Fibers Industry | Raw material for modified polyester fibers | Incorporated via copolymerization into the polymer chain to improve fiber dyeability and hand feel |
Manufacturing Quality Control of Dimethyl isophthalate
| 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. |
| Color (APHA) | Visual comparison or spectrophotometric measurement at 430 nm | Measurement of yellowness intensity by comparing sample absorbance at 430 nm to APHA color scale standards. |
| Moisture Content | Karl Fischer Titration | Volumetric or coulometric titration where iodine reacts stoichiometrically with water in anhydrous methanol-based reagent. |
| Acid Value | Acid-Base Titration with NaOH standard solution | Neutralization of free carboxylic acid groups using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Residue on Ignition | Gravimetric analysis after high-temperature ashing | Determination of non-volatile inorganic impurities by weighing residue remaining after incineration at 700-800 C. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of total heavy metals after acid digestion, using lead as the representative element and flame or graphite furnace AAS. |
| Iron (Fe) Content | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Multi-element detection of dissolved iron after microwave-assisted acid digestion via characteristic atomic emission lines. |
| Chloride Content | Potentiometric titration with AgNO3 | Titration of chloride ions with silver nitrate solution using a silver indicator electrode to detect endpoint potential change. |
| Sulfated Ash | Gravimetric analysis after sulfuric acid treatment and ignition | Determination of inorganic sulfate-derived residue after treating sample with H2SO4 and igniting at 600-700 C. |
| Melting Point | Capillary melting point apparatus | Thermal transition detection by observing the temperature range at which solid-to-liquid phase change occurs under controlled heating. |
| Organic Impurities (Related Substances) | High-Performance Liquid Chromatography (HPLC) with UV detection | Separation and quantification of structurally related compounds using reversed-phase C18 column and UV detection at 254 nm. |
| Bulk Density | Graduated cylinder method with tapping | Mass per unit volume determined by measuring mass of material settled in a calibrated cylinder after standardized mechanical tapping. |
Technical Specifications of Dimethyl isophthalate
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.5% (GC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 120-124°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Conforms to reference standard |
| Color (APHA/Pt-Co) | <=30 |
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 Dimethyl isophthalate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Dimethyl isophthalate
Packaging of Dimethyl isophthalate
Industrial Dimethyl isophthalate 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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