mono-Methyl terephthalate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 1679-64-7 |
| Product name | mono-Methyl terephthalate |
| 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 mono-Methyl terephthalate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk mono-Methyl terephthalate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of mono-Methyl terephthalate
| Industry | Application | Process |
|---|---|---|
| Chemical Intermediates | Synthesis of dimethyl terephthalate (DMT) | Partial esterification of terephthalic acid with methanol |
| Polyester Industry | Intermediate for polyethylene terephthalate (PET) | Transesterification with ethylene glycol to produce bis(2-hydroxyethyl) terephthalate |
| High-Performance Polymers | Production of modified polyester resins | Copolymerization with polyols or polycarboxylic acids to tailor polymer chain structure |
| Dyes and Pigments | Synthesis of specific aromatic dye intermediates | Participation as an aromatic ring scaffold in condensation or esterification reactions |
| Pharmaceutical Synthesis | Synthesis of phthalic acid-containing drug molecules | Functioning as a functionalized aromatic ring unit in nucleophilic substitution or esterification reactions |
Manufacturing Quality Control of mono-Methyl terephthalate
| Detection Item | Common Detection Methods | Method Overview |
|---|---|---|
| Purity | High-Performance Liquid Chromatography (HPLC) | Utilizes a reversed-phase C18 column with a mobile phase of methanol-water or acetonitrile-water; detection is performed using a UV detector (typically at 240–260 nm wavelength). Purity of monomethyl terephthalate is calculated by comparing retention times and peak areas with a reference standard. |
| Content Determination | Gas Chromatography (GC) | Suitable for samples with good volatility; after appropriate derivatization, separation is performed using a capillary column with an FID detector. Quantification is carried out using external standard or internal standard methods. |
| Water Content | Karl Fischer Titration | Based on the reaction of iodine and sulfur dioxide with water in the presence of pyridine/imidazole; precise determination of trace water content in the sample via titration. |
| Melting Point | Capillary Melting Point Determination | The sample is loaded into a melting point capillary tube and heated under controlled temperature conditions; the initial and final melting temperatures are observed to assess purity and crystalline form consistency. |
| Appearance and Color | Visual Color Comparison / Colorimeter Method | Visual observation under standard lighting or measurement using a colorimeter to evaluate the sample’s color and ensure compliance with quality standards (e.g., white to off-white crystalline powder). |
| Residual Solvents | Headspace-Gas Chromatography (HS-GC) | Employs headspace sampling combined with capillary gas chromatography and an FID detector for qualitative and quantitative analysis of possible residual organic solvents (e.g., methanol, acetic acid) from the manufacturing process. |
| Acid Value | Acid-Base Titration | Using phenolphthalein as an indicator, the sample is titrated with a standardized sodium hydroxide solution. The acid value (mg KOH/g) is calculated to reflect the content of unreacted carboxylic acids or hydrolysis products. |
| Heavy Metals | Inductively Coupled Plasma Mass Spectrometry (ICP-MS) or Atomic Absorption Spectroscopy (AAS) | After sample digestion, ICP-MS or AAS is used to determine the content of heavy metal elements such as lead, cadmium, mercury, and arsenic, ensuring compliance with pharmacopeial or industrial limits. |
Technical Specifications of mono-Methyl terephthalate
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (by LC-MS) |
| Water Content (KF) | <=0.5% |
| Melting Point | 178–182°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Acid Value (mg KOH/g) | 480–495 mg KOH/g |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
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 mono-Methyl terephthalate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of mono-Methyl terephthalate
Packaging of mono-Methyl terephthalate
Industrial mono-Methyl terephthalate 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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