CAS 392-57-4 Alternative: 1,4-Diiodotetrafluorobenzene Specs
Validating CAS 392-57-4 Equivalency Against Sigma-Aldrich 282286 Lot Data and Physical Constants
When sourcing 1,4-Diiodotetrafluorobenzene for organic synthesis, verifying physical constants against established catalog references is critical for method transfer. The target material, identified broadly in literature as CAS 392-57-4, must match specific thermodynamic properties to ensure reproducibility in halogen bonding studies or cross-coupling reactions. Based on available public data, the molecular weight is confirmed at 401.87 g/mol with a molecular formula of C6F4I2.
Procurement teams often reference specific lot data from legacy suppliers to establish baseline expectations. However, reliance on a single vendor's catalog number can limit supply chain resilience. At NINGBO INNO PHARMCHEM CO.,LTD., we prioritize batch-to-batch consistency verified through internal GC-MS and melting point analysis rather than external catalog matching. The literature melting point range is consistently cited between 108°C and 110°C. Deviations outside this range often indicate the presence of mono-iodo intermediates or residual solvents from the synthesis route.
For R&D managers validating alternatives, it is essential to request a pre-shipment sample to confirm that the thermal profile matches your historical data. While catalog numbers vary, the chemical identity remains defined by the CAS registry. Our quality control protocols focus on these immutable physical constants to guarantee functional equivalency in your downstream applications.
Defining R&D-Grade Purity Thresholds and Sublimation Standards for 1,4-Diiodotetrafluorobenzene
Purity specifications for fluorinated intermediates vary significantly depending on the intended application. For standard organic synthesis, a purity threshold of 98% is commonly accepted. However, specialized applications involving supramolecular aggregation or phosphorescent co-crystal assembly may require stricter impurity controls. The material is known to undergo sublimation under reduced pressure, which is a common purification method.
During process development, engineers must account for the volatility of halogenated aromatic hydrocarbons. While the boiling point is recorded at approximately 252.4±35.0 °C at 760 mmHg, thermal degradation can occur if heating rates are not controlled. We recommend monitoring the sublimation temperature carefully to prevent decomposition of the iodine-carbon bond. For high-precision work, additional purification steps such as recrystallization from appropriate solvents may be necessary to remove trace isomers.
It is important to note that standard commercial grades may contain trace amounts of p-Diiodoperfluorobenzene isomers. These structural analogs can interfere with reaction kinetics in catalytic cycles. Our production teams optimize the synthesis route to minimize these isomers, ensuring the material performs reliably as a chemical building block in complex molecule construction.
Critical Certificate of Analysis Parameters for Halogenated Aromatic Hydrocarbon Batch Consistency
Consistency in halogenated reagents is paramount for scaling reactions from milligram to kilogram scales. A robust Certificate of Analysis (COA) should extend beyond basic identity testing. Key parameters include assay purity, melting point, and water content. Below is a comparison of typical technical parameters expected for this fluorinated intermediate.
| Parameter | Standard Specification | Typical Batch Result |
|---|---|---|
| CAS Number | 392-57-4 | 392-57-4 |
| Molecular Weight | 401.87 g/mol | 401.87 g/mol |
| Melting Point | 108-110°C | 108.5-109.5°C |
| Purity (GC-MS) | >98% | >98.5% |
| Appearance | Off-white to Pale Yellow Solid | Off-white Crystalline Solid |
| Storage Condition | 2-8°C | 2-8°C |
Please refer to the batch-specific COA for exact numerical values upon request. Variations in appearance, such as color shifts from off-white to pale yellow, are often indicative of trace iodine release or oxidation during storage. Proper handling protocols must be established to maintain integrity.
Impurity Profiling and GC-MS Verification Standards for Fluorinated Reagent Alternatives
Advanced verification requires more than a simple melting point check. GC-MS verification standards should include a full scan to identify trace organic impurities. Common contaminants in the manufacturing of 1,4-Diiodotetrafluorobenzene include mono-iodinated precursors and fully fluorinated benzene residues. These impurities can act as chain terminators or competing substrates in coupling reactions.
From a field experience perspective, a non-standard parameter that often goes unreported is the behavior of trace impurities during low-temperature storage. We have observed that certain batches exhibit changes in crystal habit when stored below 15°C for extended periods. This crystallization shift can affect dispensing accuracy in automated synthesis modules. Additionally, trace moisture can accelerate hydrolysis of the iodine-carbon bond over time, leading to increased acidity in solution.
Our analytical team utilizes high-resolution mass spectrometry to profile these impurities. This ensures that the material functions correctly as a halogen bonding donor or electrophilic partner. For critical projects, we recommend requesting an impurity profile report alongside the standard COA to validate compatibility with your specific organic synthesis workflow.
Moisture-Controlled Amber Glass Bulk Packaging Specifications for Light-Sensitive Compounds
Proper packaging is essential for maintaining the stability of light-sensitive halogenated compounds. Exposure to UV light can induce homolytic cleavage of the carbon-iodine bond. Therefore, bulk packaging must utilize amber glass or opaque high-density polyethylene containers lined with moisture barriers. For larger quantities, we utilize steel drums with internal liners to prevent contamination.
Logistics handling focuses on physical integrity and moisture exclusion. We ship in standard 25kg fiber drums or 210L steel drums depending on volume requirements. All containers are sealed with desiccants to maintain a dry headspace. It is critical to inspect packaging upon receipt for any signs of compromise. While we ensure robust physical packaging for global shipping, buyers are responsible for verifying import regulations specific to their region.
Storage conditions should strictly adhere to the 2-8°C recommendation provided in safety data sheets. Deviations from this range can lead to clumping or phase changes that complicate weighing and dosing. Our logistics team coordinates directly with freight forwarders to ensure temperature-controlled transport where necessary.
Frequently Asked Questions
What is the typical lead time for bulk orders of CAS 392-57-4?
Lead times vary based on current inventory levels and production scheduling. Standard stock items typically ship within 5-7 business days, while custom synthesis batches may require 2-4 weeks. Please contact our sales team for a specific timeline based on your required quantity.
Can you provide a sample for technical validation before purchase?
Yes, we offer sample quantities for R&D validation. This allows your team to verify melting point and purity against your internal standards before committing to a bulk order. Samples are shipped under the same packaging conditions as bulk goods.
What documentation is included with the shipment?
Every shipment includes a batch-specific Certificate of Analysis (COA) and a Safety Data Sheet (SDS). Additional documentation such as method validation reports can be provided upon request for qualified accounts.
How should this material be stored upon arrival?
The material should be stored in a cool, dry place away from light, ideally between 2-8°C. Ensure the container is tightly sealed after each use to prevent moisture ingress and potential degradation of the iodine functionality.
Sourcing and Technical Support
Reliable sourcing of specialized fluorinated reagents requires a partner with deep technical expertise and robust quality control systems. NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing high-purity intermediates supported by comprehensive analytical data. We understand the critical nature of supply chain consistency for ongoing research and production campaigns.
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