China Factory Direct
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| CAS number | 131-11-3 |
| Product name | Dimethyl phthalate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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 |
|---|---|---|
| Plastics Processing | Plasticizer for cellulose resins, cellulose acetate, and cellulose nitrate esters | Compounded with resins to produce celluloid sheets, motion picture film, and laminated safety glass |
| Coatings & Inks | Additive in coatings and paints | Dissolved or dispersed in formulations to improve flow and film-forming properties |
| Adhesives | Plasticizer or solvent in adhesives | Incorporated into adhesive systems to adjust viscosity and flexibility |
| Fragrance Industry | Fixative or solvent | Used in compounding perfumes and personal care fragrance concentrates |
| Pharmaceuticals | Excipient (solvent or plasticizer) | Employed in film-coating formulations for coated tablets |
| Chemical Synthesis | Organic synthesis intermediate | Applied in the production of repellents, fragrances, and other fine chemicals |
| Test Item | Common Testing Method | Method Description |
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| Purity Determination | Gas Chromatography (GC) | Separate DMP and other impurities using gas chromatography, quantify via peak area normalization or external standard method to evaluate main component purity. Typically uses capillary columns (e.g., DB-5, HP-5) with FID detector. |
| Impurity Content Analysis | Gas Chromatography-Mass Spectrometry (GC-MS) | Combines the separation capability of GC with the qualitative function of MS for accurate identification and quantification of trace organic impurities (e.g., monomethyl phthalate, solvent residues, etc.). |
| Moisture Content | Karl Fischer Titration | Determine trace moisture content in the sample using volumetric or coulometric methods, suitable for quality control of DMP products sensitive to moisture. |
| Acid Value / Free Acid Content | Acid-Base Titration | Use phenolphthalein as an indicator and titrate free acid (e.g., phthalic acid) with a standard sodium hydroxide solution to reflect the degree of esterification completion. |
| Color | Visual Color Comparison or Spectrophotometry | Compare the sample with standard color charts or measure absorbance at specific wavelengths (e.g., 425 nm) to assess whether the product color meets industrial standards. |
| Density | Densitometer Method or Pycnometer Method | Measure the sample density at a standard temperature (e.g., 20°C), used as a physical constant for identification and quality consistency assessment. |
| Refractive Index | Abbe Refractometer Method | Determine the refractive index (n20D) of the sample at 20°C, used as an auxiliary method for identification and batch consistency control. |
| Volatile Organic Compound Residue | Headspace-Gas Chromatography (HS-GC) | Analyze volatile solvent residues (e.g., methanol, ethyl acetate) using headspace sampling technology to avoid interference from high-boiling matrix components. |
| Heavy Metal Content | Atomic Absorption Spectroscopy (AAS) or ICP-MS | Determine the content of heavy metals (e.g., lead, cadmium, mercury, arsenic) after sample digestion to ensure compliance with environmental and safety standards (e.g., RoHS). |
| Test Item | Specification |
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| Appearance | Colorless to almost colorless, clear liquid |
| Purity | >=98.5% (by GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Refractive Index (n20/D) | 1.514–1.518 |
| Relative Density (20°C/25°C) | 1.118–1.122 g/cm³ |
| Acid Value (mg KOH/g) | <=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.