China Factory Direct
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| CAS number | 88353-04-2 |
| Product name | Dodecanedioic acid, 1-(phenylmethyl) ester |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial Grade |
| Packaging | 5KG/bag25KG/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 |
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| Pharmaceutical Intermediates | Component in the synthesis of drug molecules | Reaction of dodecanedioic acid monobenzyl ester with other compounds to produce the target drug molecule |
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Purity | Gas Chromatography (GC) | Uses capillary column separation and Flame Ionization Detector (FID) for detection. Purity is calculated by comparing retention times and peak areas with reference standards. Suitable for quantitative analysis of volatile or derivatizable substances. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Employs reverse-phase columns (e.g., C18), using methanol-water or acetonitrile-water as mobile phase. Detection is performed at 254 nm or 230 nm using a UV detector, allowing accurate determination of the main component content. Suitable for thermally unstable or non-volatile compounds. |
| Structure Identification | Nuclear Magnetic Resonance Spectroscopy (NMR) | ¹H NMR and ¹³C NMR provide molecular structure information, confirming the linkage between benzyl ester groups and the dodecanedioic acid backbone. A key method for structural confirmation. |
| Molecular Weight Determination | Mass Spectrometry (MS) | Uses Electrospray Ionization (ESI-MS) or Electron Impact Ionization (EI-MS) to detect molecular ion peaks ([M+H]⁺ or [M]⁺), used to confirm molecular weight and molecular formula. |
| Acid Value | Titration Method (GB/T 6368 / ISO 6872) | Phenolphthalein is used as an indicator, and the free carboxylic acid in the sample is titrated with a standard potassium hydroxide solution. The acid value is calculated to reflect the amount of unesterified acid in the product. |
| Saponification Value | Saponification Titration | An excess of potassium hydroxide ethanol solution is refluxed with the sample to saponify the esters, followed by back titration with a standard hydrochloric acid solution. The saponification value is calculated to reflect the total ester content. |
| Residual Solvents | Gas Chromatography-Mass Spectrometry (GC-MS) | Used to detect residual organic solvents that may be present from the synthesis process (e.g., toluene, ethanol, acetone), with quantification based on standard curves, in compliance with ICH Q3A requirements. |
| Melting Point / Melting Range | Micro Melting Point Apparatus or Differential Scanning Calorimetry (DSC) | Determines the melting range by observing the sample's melting behavior or measuring thermal flow changes, used to assess purity and crystalline state of the substance. |
| Heavy Metal Content | Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | After sample digestion, the content of heavy metal elements such as lead, cadmium, and mercury is determined to ensure compliance with pharmacopoeia or industry standard limits (e.g., Chinese Pharmacopoeia, USP). |
| Water Content | Karl Fischer Titration | Specifically used for determining trace moisture based on the chemical reaction between iodine and water. Provides accurate results and is suitable for moisture-sensitive organic ester compounds. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (by LC-MS) |
| Water Content (KF) | <=0.5% |
| Melting Point | 112–116°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Acid Value (mg KOH/g) | <=5.0 mg KOH/g |
| Heavy Metals | <=10 ppm |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
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.