China Factory Direct
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| CAS number | 625-69-4 |
| Product name | 2,4-PENTANEDIOL |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeElectronic GradeMaterial GradeCosmetic GradeFood 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 |
|---|---|---|
| Coatings & Inks | Solvent, film-forming aid | Used in waterborne coatings and printing inks to improve leveling, reduce minimum film formation temperature, and enhance gloss and adhesion |
| Pesticides | Intermediate, co-solvent | Serves as an intermediate in the synthesis of insecticides (e.g., pyrethroids) and fungicides; acts as a solubilizer for active ingredients in formulations |
| Pharmaceuticals | Organic synthesis intermediate | Used in the synthesis of antifungal agents (e.g., terbinafine derivatives), vitamins, and chiral auxiliaries for chiral drug synthesis |
| Fine Fragrances & Cosmetics | Fragrance stabilizer, solvent | Dissolves fragrance components in perfumes and emulsions to enhance scent longevity and formulation stability |
| Electronic Chemicals | Cleaning agent component | Applied in precision cleaning during semiconductor and LCD panel manufacturing to remove photoresist residues and organic contaminants |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID | Quantifies 2,4-pentanediol peak area relative to a calibrated standard using flame ionization detection. |
| Water Content | Karl Fischer Titration | Measures water by coulometric or volumetric titration with iodine generated in situ via electrochemical reaction. |
| Acidity (as Acetic Acid) | Acid-Base Titration with NaOH | Neutralizes acidic impurities using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Color (APHA) | Visual Comparison or Spectrophotometry at 430 nm | Compares sample color to APHA platinum-cobalt standard scale using visual assessment or absorbance measurement. |
| Density at 20 degC | Digital Density Meter | Determines mass per unit volume using oscillating U-tube principle with temperature-controlled measurement. |
| Refractive Index at 20 degC | Refractometry | Measures bending of light through the sample at specified temperature to determine refractive index. |
| Residue on Evaporation | Gravimetric Analysis | Evaporates known volume to dryness and weighs non-volatile residue after controlled heating. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals after acid digestion by measuring atomic absorption at characteristic wavelengths. |
| Chloride Content | Ion Chromatography (IC) or Potentiometric Titration | Separates and quantifies chloride ions using conductivity detection (IC) or silver nitrate titration with endpoint detection. |
| Aldehyde Impurities (e.g., Acetaldehyde) | Gas Chromatography (GC) with FID or Headspace GC | Detects volatile aldehydes by separation and FID response; headspace mode minimizes matrix interference. |
| Non-Volatile Residue | Gravimetric Analysis | Evaporates sample under vacuum or gentle heat and weighs residual solids after drying to constant weight. |
| Specific Optical Rotation | Polarimetry | Measures rotation of plane-polarized light caused by chiral centers in the sample at specified concentration and wavelength. |
| Test Item | Specification |
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| Appearance | Colorless to light yellow, clear liquid |
| Purity | >=98.5% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Refractive Index (n20/D) | 1.426–1.432 |
| Relative Density (20°C/25°C) | 0.930–0.940 g/cm³ |
| Acid Value (mg KOH/g) | <=0.5 |
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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.