China Factory Direct
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| CAS number | 71902-33-5 |
| Product name | 3,5-Difluoropyridine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial Grade |
| Packaging | 25L/drum |
| 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 |
|---|---|---|
| Pesticides | Intermediate in the synthesis of novel pesticides | Chemical synthesis via reaction with specific functional groups to generate target compounds |
| Pharmaceuticals | Used in the preparation of biologically active drug molecules | Organic synthesis, participating in the construction of complex pharmaceutical molecular frameworks |
| Materials Science | Employed as an additive or modifier in certain specialty materials | Introduction into polymer chains via copolymerization, crosslinking, and related methods |
| Fine Chemicals | Raw material for the production of other fine chemicals | Conversion into desired products through substitution, addition, and other chemical reaction pathways |
| Test Item | Common Testing Methods | Method Overview |
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| Appearance | Visual Inspection | Observe the color, state, and presence of visible impurities under natural light or standard illumination. |
| Content (Active Ingredient) | Gas Chromatography (GC) | Utilize capillary column gas chromatography with a flame ionization detector (FID); qualitative analysis is performed by retention time, and quantitative analysis is carried out via peak area normalization or external standard method to determine the purity of 3,5-difluoropyridine. |
| Impurity Analysis (Organic Impurities) | High-Performance Liquid Chromatography (HPLC) or GC | Separate and quantify potential synthetic by-products (e.g., monofluoro- or trifluoropyridine) using reversed-phase HPLC (e.g., C18 column) or GC, typically employing gradient elution or temperature programming. |
| Water Content | Karl Fischer Titration | Determine water content in samples using electrochemical titration principles; suitable for trace moisture detection, available in volumetric and coulometric methods. |
| Residual Solvents | Gas Chromatography (GC) | According to ICH guidelines, detect residual organic solvents (e.g., toluene, ethanol, dichloromethane) from the manufacturing process using headspace GC-FID. |
| Chlorides | Ionic Chromatography or Turbidimetry | Ionic chromatography enables precise measurement of inorganic anions; turbidimetry relies on the reaction of chloride ions with silver nitrate to form a precipitate, with content assessed by turbidity. |
| Density | Vibrating Tube Densimetry | Measure the density of liquid samples at a specified temperature using a digital densimeter, aiding in identification and batch consistency evaluation. |
| Refractive Index | Refractometry | Measure the refractive index of the sample at a standard temperature (e.g., 20°C) as a physical constant for authentication and auxiliary purity assessment. |
| Boiling Point / Distillation Range | Distillation or Differential Scanning Calorimetry (DSC) | Determine the boiling point range or melting/phase transition temperature to assess purity and consistency; DSC provides information on thermal behavior. |
| Metal Impurities | Inductively Coupled Plasma Mass Spectrometry (ICP-MS) or Atomic Absorption Spectroscopy (AAS) | Detect residual catalyst metals (e.g., Pd, Ni, Cu) in the sample to meet metal limit requirements for pharmaceutical or electronic-grade materials. |
| Test Item | Specification |
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| Appearance | Colorless liquid |
| Purity | >=98.0% (by LC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.465–1.475 |
| Relative Density (20°C/25°C) | 1.22–1.24 g/cm³ |
| Odor | Characteristic pyridine-like odor |
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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.