China Factory Direct
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| CAS number | 5372-81-6 |
| Product name | Dimethyl aminoterephthalate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial GradeReagent 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Used as a synthetic pharmaceutical intermediate for preparing antitumor, antibacterial, or antiviral compounds | Introduced into multi-step organic syntheses via nucleophilic substitution, reduction, or coupling reactions to incorporate amino or carboxylic acid functionalities |
| Dyes and Pigments | Used as an intermediate for azo dyes or fluorescent dyes | Applied in diazotization and coupling reactions to construct chromophore structures |
| Polymers | Used to synthesize monomers for polyamides, polyesters, or functionalized polymers | Applied in transesterification, condensation polymerization, or aminolysis to introduce rigid aromatic rings and polar groups, thereby enhancing thermal stability or dyeability of the resulting materials |
| Analytical Chemistry | Used as a fluorescent probe or ligand precursor for metal ion detection | Applied in derivatization of amino and ester groups to form chelating structures that bind specific metal ions, inducing optical signal changes |
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, physical state, and presence of foreign particles under natural or standard lighting. It should typically be a white to off-white crystalline powder. |
| Purity/Assay | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with methanol-water or acetonitrile-water as the mobile phase, and UV detection (e.g., at 254 nm). The content of the main component is determined by external standard method or area normalization to evaluate purity. |
| Melting Point | Melting Point Determination (Capillary Method or Digital Melting Point Apparatus) | Load sample into a capillary tube and measure the initial and final melting temperatures at a specified heating rate. Compare results with the standard range (typically about 190–195 °C) to assess purity and crystal form consistency. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Constant Weight Drying Method | Dry the sample at a specified temperature (e.g., 105 °C) until constant weight is achieved. Calculate the percentage of mass loss to control moisture and volatile impurities. |
| Sulfated Ash / Residue on Ignition | Ash Content Determination | Ignite the sample at high temperature (usually 700–800 °C) and weigh the residual inorganic material to monitor levels of inorganic impurities. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Use gradient elution to separate and detect potential organic impurities (e.g., unreacted starting materials, by-products, degradation products), quantifying them using peak area normalization or response factors. |
| Residual Solvents | Gas Chromatography (GC) | Headspace or direct injection, using polar or non-polar capillary columns with FID detection. Determine residual organic solvents such as methanol and xylene according to ICH Q3C guidelines. |
| pH Value (if prepared as solution) | pH Meter Method | Prepare an aqueous solution of defined concentration (e.g., 1%), and measure acidity or alkalinity using a calibrated pH meter to indicate acidic impurities or hydrolysis. |
| Infrared Identification | Fourier Transform Infrared Spectroscopy (FT-IR) | Prepare KBr pellet or use ATR technique to obtain IR spectrum. Identify characteristic absorption peaks (e.g., ester C=O stretch around 1720 cm⁻¹, aromatic ring skeletal vibrations around 1600 and 1500 cm⁻¹) for structural confirmation. |
| Elemental Impurities | Inductively Coupled Plasma Mass Spectrometry (ICP-MS) or Atomic Absorption Spectroscopy (AAS) | Test for toxic elements such as lead, arsenic, cadmium, and mercury in accordance with ICH Q3D requirements to ensure compliance with safety limits. |
| Test Item | Specification |
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| Appearance | White to yellow crystalline powder |
| Purity | >=98.5% (by LC-MS) |
| Water Content (KF) | <=0.5% |
| Melting Point | 178–182°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.