China Factory Direct
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| CAS number | 522651-57-6 |
| Product name | magnesium;1,4-difluoro-2-methanidylbenzene;bromide |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty Grade |
| Packaging | 25KG/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) |
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 |
|---|---|---|
| Pharmaceutical R&D | Organic synthesis intermediate | Used as a Grignard reagent in coupling reactions to construct fluorinated aromatic frameworks |
| Agrochemicals | Synthesis of novel pesticide molecules | Reacts with electrophilic reagents such as aldehydes and ketones under low-temperature conditions to introduce the 2,5-difluorobenzyl moiety |
| Materials Science | Precursor for functional materials | Applied in the preparation of organic semiconductor intermediates with tailored optoelectronic properties |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Active Magnesium Content | Acid-Base Titration with Back-Titration | Quantifies Grignard reagent concentration by hydrolysis followed by titration of liberated acid with standardized base. |
| Residual Solvent (2-MeTHF) | Gas Chromatography (GC-FID) | Separates and quantifies 2-methyltetrahydrofuran using flame ionization detection against calibrated standards. |
| Water Content | Karl Fischer Coulometric Titration | Electrochemically determines trace water via iodine generation and stoichiometric reaction with water. |
| Halide Impurity (Br-) | Ion Chromatography (IC) | Separates and quantifies bromide ions using anion-exchange column and conductivity detection. |
| Organic Impurities (Related Substances) | High Performance Liquid Chromatography (HPLC-UV) | Resolves and quantifies structurally related organic impurities using reversed-phase separation and UV detection. |
| Heavy Metals (Pb, Cd, Ni, Cu) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Simultaneously quantifies trace metal contaminants after acid digestion via element-specific atomic emission. |
| Appearance and Clarity | Visual Inspection | Assesses solution homogeneity, color, and presence of particulates or haze against standard references under controlled lighting. |
| pH of Aqueous Extract | pH Meter Measurement | Measures hydrogen ion activity in aqueous phase after controlled quenching and phase separation. |
| Residual Starting Material (2,5-Difluorobenzyl Bromide) | Gas Chromatography (GC-FID) | Quantifies unreacted aryl bromide using retention time matching and external calibration. |
| Total Organic Carbon (TOC) | Combustion-NDIR Analysis | Oxidizes organic carbon to CO2 and measures concentration via non-dispersive infrared detection. |
| Viscosity | Rotational Viscometry | Determines flow resistance at specified temperature using calibrated spindle rotation and torque measurement. |
| Density | Oscillating U-tube Densitometry | Measures mass per unit volume based on resonant frequency shift of a vibrating U-shaped tube filled with sample. |
| Test Item | Specification |
|---|---|
| Appearance | Colorless to pale yellow clear liquid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Conforms to reference standard |
| Odor | Characteristic mild organic odor |
| Relative Density (20°C/25°C) | 0.87–0.91 g/cm³ |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Danger |
| Safety Data Sheet | |
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.