China Factory Direct
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| CAS number | 53293-00-8 |
| Product name | 5-HEXYNOIC ACID |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeIndustrial GradeCosmetic GradeFood 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 |
|---|---|---|
| Pharmaceuticals | Synthesis of pharmaceutical intermediates | Alkylation reactions |
| Agrochemicals | Preparation of active pharmaceutical ingredients | Transition metal-catalyzed coupling reactions |
| Materials | Production of functional polymer monomers | Free radical polymerization |
| Fine fragrances and flavors | Synthesis of flavor and fragrance compounds | Aldol condensation reactions |
| Chemicals | Preparation of specialty chemicals | Hydrogenation or oxidation reactions |
| Test Item | Common Testing Methods | Method Description |
|---|---|---|
| Appearance and Properties | Visual Inspection, Melting Point Determination | Observe the sample's color and state with the naked eye; use a melting point apparatus to measure its melting range to assess purity and physical state. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use a reverse-phase C18 column with an appropriate mobile phase (e.g., methanol-water or acetonitrile-water system) for separation. Quantitative analysis of the main component is performed using a UV detector (typically at 210–220 nm). |
| Gas Chromatography (GC) | Suitable for volatile derivatives (e.g., after methyl esterification), separated by capillary columns and quantified using an FID detector. | |
| Purity Analysis | HPLC or GC | Evaluate the overall impurity level using peak area normalization or external standard methods to determine the sample’s overall purity. |
| Related Substances (Impurities) | HPLC (Gradient Elution) | Separate potential process-related impurities and degradation products using a gradient elution program. Combine with mass spectrometry (LC-MS) for structural identification assistance. |
| Water Content | Karl Fischer Method | Determine water content accurately using potentiometric titration or coulometric method to ensure compliance with drying loss requirements. |
| Residual Solvents | Headspace-Gas Chromatography (HS-GC) | Analyze potential residual organic solvents (e.g., methanol, ethanol, dichloromethane, etc.) using headspace injection and quantify them with FID or MS detection. |
| pH Value (if prepared as a solution) | pH Meter Measurement | Prepare the sample into a solution of certain concentration and measure its acidity/alkalinity with a calibrated pH meter to reflect free acid content and stability. |
| Alkyne Functional Group Confirmation | Infrared Spectroscopy (FT-IR) | Observe the C≡C stretching vibration characteristic absorption peak in the ~2100–2260 cm⁻¹ region to confirm the presence of alkyne bonds. |
| Nuclear Magnetic Resonance Hydrogen Spectrum (¹H NMR) | Observe characteristic proton signals of terminal or internal alkynes near δ 1.9–2.5 ppm and further confirm the structure with carbon spectrum (¹³C NMR). | |
| Heavy Metals | Inductively Coupled Plasma Mass Spectrometry (ICP-MS) or Atomic Absorption Spectroscopy (AAS) | Dissolve the sample according to pharmacopoeia methods and detect heavy metal residues such as lead, arsenic, cadmium, and mercury to ensure they meet limit requirements. |
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow liquid |
| Purity | >=98.0% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Acid Value (mg KOH/g) | 185–195 mg KOH/g |
| Refractive Index (n20/D) | 1.435–1.445 |
| Relative Density (20°C/25°C) | 0.920–0.940 g/cm³ |
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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.