Ethyl 4-bromocrotonate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 37746-78-4 |
| Product name | Ethyl 4-bromocrotonate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeReagent GradeIndustrial 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) |
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Documents We Provide for Ethyl 4-bromocrotonate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Ethyl 4-bromocrotonate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Ethyl 4-bromocrotonate
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical Industry | Intermediate | Used to synthesize specific structural units in drug molecules |
| Organic Synthesis | Synthetic Reagent | Serves as a starting material or intermediate in the synthesis of complex organic compounds |
| Materials Science | Polymer Modification | Applied in the preparation of brominated polymers to enhance material properties such as flame retardancy |
| Research Institutions | Laboratory Research | Used as a model compound for studying specific chemical reaction mechanisms or biological activity |
Manufacturing Quality Control of Ethyl 4-bromocrotonate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | GC-FID or GC-MS | Quantitative determination based on peak area comparison against a certified reference standard using gas chromatography with flame ionization or mass spectrometric detection. |
| Related Substances | HPLC-UV | Separation and quantification of impurities using reversed-phase high-performance liquid chromatography with ultraviolet detection at appropriate wavelength. |
| Residual Solvents | GC-FID with Headspace Sampling | Qualitative and quantitative analysis of volatile organic solvents by gas chromatography after equilibrium headspace extraction. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration based on the stoichiometric reaction of iodine with water in a controlled anhydrous medium. |
| Acid Value | Acid-Base Titration (NaOH, phenolphthalein indicator) | Neutralization of free carboxylic acid groups with standardized sodium hydroxide solution; endpoint detected by color change. |
| Heavy Metals (as Pb) | ICP-OES | Multi-element quantification of trace metal contaminants after acid digestion, based on element-specific atomic emission intensities. |
| Chloride Impurity | Ion Chromatography (IC) with Conductivity Detection | Separation and quantification of chloride ions using anion-exchange column and suppressed conductivity detection. |
| Optical Rotation | [α]D Measurement (Polarimetry) | Determination of specific optical rotation at 589 nm using a calibrated polarimeter to assess chiral purity and enantiomeric excess. |
| Appearance & Color | Visual Inspection / Hazen (APHA) Color Scale | Subjective visual assessment against water or standardized platinum-cobalt color scale for clarity and hue. |
| Density | Digital Density Meter (Oscillating U-tube) | Measurement of mass per unit volume at specified temperature via resonant frequency shift of a vibrating U-shaped tube filled with sample. |
| Refractive Index | Abbe Refractometer | Determination of refractive index at 20 °C using critical angle measurement of light passing through the liquid sample. |
| Residue on Ignition | Gravimetric Analysis (Weight Loss on Ignition) | Quantification of non-volatile inorganic residue after controlled high-temperature ashing and cooling in desiccator. |
| Halogen Content (Br) | Oxygen Flask Combustion followed by Potentiometric Titration | Combustion of sample in oxygen flask to convert organic bromine to bromide ion, followed by argentometric titration with silver nitrate. |
| Stereochemical Purity (E/Z Isomer Ratio) | GC-FID or NMR | Quantitative determination of geometric isomer ratio using retention time separation (GC) or characteristic proton coupling patterns (¹H NMR). |
Technical Specifications of Ethyl 4-bromocrotonate
| Test Item | Specification |
|---|---|
| Appearance | Colorless to pale yellow liquid |
| Purity | >=98.0% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.492–1.496 |
| Relative Density (20°C/25°C) | 1.310–1.320 g/cm³ |
| Odor | Ester-like, characteristic |
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 Ethyl 4-bromocrotonate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Ethyl 4-bromocrotonate
Packaging of Ethyl 4-bromocrotonate
Industrial Ethyl 4-bromocrotonate 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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