China Factory Direct
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| CAS number | 72345-23-4 |
| Product name | (2S,4S)-(+)-PENTANEDIOL |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeReagent GradeCosmetic GradeFood Grade |
| Packaging | 25KG/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 | Chiral drug intermediates for synthesis of antiviral or anticancer agents | Used in asymmetric synthesis and chiral resolution |
| Fine Fragrances | Chiral fragrance ingredients providing stereospecific olfactory profiles | Applied in esterification and catalytic hydrogenation |
| Materials Science | Monomers for preparing chiral liquid crystals or functional polymeric materials | Employed in polymerization and crosslinking modification |
| Agrochemicals | Chiral pesticide intermediates to enhance biological activity or reduce toxicity | Utilized in catalytic reduction and condensation reactions |
| Research Reagents | Chiral auxiliaries or reference standards for optical purity analysis and asymmetric catalysis research | Applied in chromatographic separation and chemical derivatization |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detector | Quantifies main component by retention time and peak area against certified reference standard. |
| Optical Rotation | [alpha]D Measurement using Polarimeter | Measures specific rotation at 20 C and 589 nm to confirm chiral integrity and enantiomeric excess. |
| Water Content | Karl Fischer Titration (Coulometric) | Electrochemical titration quantifying water via iodine generation and stoichiometric reaction. |
| Residue on Ignition | Gravimetric Analysis after High-Temperature Ashing | Measures non-volatile inorganic impurities as mass residue after combustion at 700-800 C. |
| Heavy Metals | ICP-OES | Simultaneously quantifies trace metal impurities (e.g., Pb, Cd, As, Hg) by atomic emission intensity. |
| Chloride Content | Ion Chromatography (IC) | Separates and quantifies chloride ions based on anion exchange and conductivity detection. |
| Sulfate Content | Ion Chromatography (IC) | Separates and quantifies sulfate ions using anion exchange column and suppressed conductivity detection. |
| Acid Value | Acid-Base Titration with NaOH standard solution | Determines free acid content by neutralization with standardized sodium hydroxide solution. |
| Related Substances | High-Performance Liquid Chromatography (HPLC) with UV detection | Separates and quantifies structurally related impurities using reversed-phase C18 column and UV absorbance. |
| Appearance | Visual Inspection against Standard White Background | Assesses physical state, color, and clarity under controlled lighting and viewing conditions. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range of solid-to-liquid transition using calibrated capillary method. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Measures hydrogen ion activity in 10% w/w aqueous solution using calibrated glass electrode system. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (GC-MS) |
| Optical Rotation | +52.0 to +56.0 deg (c=1, in H2O) |
| Melting Point | 78.0 to 82.0 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
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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.