Coumarin Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 91-64-5 |
| Product name | Coumarin |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeCosmetic GradeFood Grade |
| Packaging | 25KG/bag500KG/bag1000KG/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) |
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Documents We Provide for Coumarin
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Coumarin Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Coumarin
| Industry | Application | Process |
|---|---|---|
| Fragrance Industry | Used as a fixative and food-grade flavoring agent, imparting vanilla, tonka bean, lavender, and similar aromas | Added directly to fragrance formulations at typical levels of 0.1–5%; when used in food flavorings for confectionery, ice cream, beverages, etc., compliance with GB 2760 or FDA 21 CFR 172.515 is required |
| Personal Care & Detergent Industry | Employed as a fixative in soap and detergent fragrances to enhance aroma longevity | Co-blended with surfactants into the fragrance base, then homogenized and emulsified prior to incorporation into soap or liquid detergent systems |
| Tobacco Industry | Applied as a cigarette flavor additive to improve smoke smoothness and sweetness | Applied to tobacco strands as an ethanol solution, typically at 0.005–0.05% (w/w), in accordance with the “Principles for Use of Tobacco Additives” |
| Pharmaceutical Intermediates | Serves as a key structural scaffold for synthesizing the anticoagulant warfarin and certain antimicrobial and antitumor derivatives | Coumarin is first synthesized via Pechmann condensation or Perkin reaction, followed by multi-step transformations—including bromination, alkaline hydrolysis, and Clemmensen reduction—to construct the 4-hydroxycoumarin structure |
| Pesticide Development | Utilized as a plant-derived lead compound for insecticidal/antifeedant agents in the development of novel green pesticides | High-activity derivatives are obtained through structural modifications—such as 3-substitution, 4-hydroxylation, or benzo[b]furan fusion—and advanced to registration following field efficacy trials |
Manufacturing Quality Control of Coumarin
| Test Item | Common Test Methods | Method Overview |
|---|---|---|
| Identification | Thin-Layer Chromatography (TLC) | Utilizes the relative migration value (Rf value) of coumarin in a specific developing system compared with a reference standard. Identification is performed by visualizing spots under UV light (fluorescence) or using spray reagents. |
| Infrared Spectroscopy (IR) | Determines the infrared absorption spectrum of the sample and compares characteristic functional group absorption peaks (e.g., lactone carbonyl at ~1700 cm⁻¹, aromatic ring skeleton vibrations) with standard spectra for structural confirmation. | |
| Ultraviolet-Visible Spectrophotometry (UV-Vis) | Uses the characteristic absorption peaks of coumarin within the 270–330 nm range to perform preliminary identification based on maximum absorption wavelength and absorbance values. | |
| Assay | High-Performance Liquid Chromatography (HPLC) | Employs a reversed-phase C18 column with methanol-water or acetonitrile-water as the mobile phase and a UV detector (typically 270–320 nm) for quantitative analysis of coumarin content, offering high sensitivity and good reproducibility. |
| Gas Chromatography (GC) | Suitable for volatile coumarin derivatives; separates compounds using a capillary column and quantifies them using FID or MS detectors. Thermal stability must be considered. | |
| Related Substances / Impurity Testing | High-Performance Liquid Chromatography (HPLC) | Uses gradient or isocratic elution to separate the main component from potential impurities (e.g., synthesis by-products, degradation products). Impurity levels are controlled using area normalization or a qualified reference substance method with correction factors. |
| Solubility | Visual or Turbidity Method | Coumarin is added to various solvents at a specified temperature, and dissolution behavior is observed to assess suitability for raw material use and formulation process design. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Loss on Drying at Atmospheric Pressure | The sample is dried at 105°C until constant weight; the percentage weight loss is calculated to control moisture and volatile content. |
| Melting Point | Capillary Melting Point Determination | Determines the temperature range from initial melting to complete melting of coumarin; a narrow melting range indicates higher purity. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | After digesting the sample, residual levels of heavy metals such as lead, arsenic, cadmium, and mercury are measured to ensure compliance with pharmacopoeial or regulatory limits. |
Technical Specifications of Coumarin
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Melting Point | 69.0 - 71.0 °C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=20 ppm |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Coumarin
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Coumarin
Packaging of Coumarin
Industrial Coumarin Procurement FAQ
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.
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