Diphenyldiethoxysilane Sigma Aldrich Discontinued Alternative Source
Securing a Direct Diphenyldiethoxysilane Sigma Aldrich Discontinued Alternative
The discontinuation of key reagents by major catalog suppliers creates significant bottlenecks for research and development teams. When a critical organosilicon compound becomes unavailable, it forces chemists to revalidate entire synthetic pathways, wasting valuable time and resources. Securing a reliable supply chain for Diphenyl diethoxysilane is essential for maintaining project momentum in silicone chemistry and pharmaceutical intermediates. Laboratories require a partner who understands the urgency of R&D timelines and can provide consistent material without compromising on specifications.
NINGBO INNO PHARMCHEM CO.,LTD. positions itself as a robust solution for these supply chain vulnerabilities. As a dedicated global manufacturer, the company focuses on producing high-value specialty chemicals that meet stringent international standards. Unlike trading companies, direct manufacturing ensures better control over the manufacturing process and inventory availability. This direct sourcing model eliminates intermediate markups and reduces the risk of stockouts that plague distributed catalog items.
Procuring this silane directly offers significant advantages regarding bulk price stability and customization. R&D departments often scale from gram to kilogram quantities, and a flexible supplier can accommodate these shifting demands seamlessly. By establishing a direct line to the production facility, procurement managers can negotiate terms that reflect long-term partnership value rather than spot market volatility. This stability is crucial for projects requiring multi-year material consistency.
For teams seeking a verified source, our Diphenyldiethoxysilane product line is optimized for immediate deployment in complex syntheses. The transition from a discontinued catalog item to a dedicated manufacturer supply should be smooth and documented. Ensuring that the alternative matches the original chemical profile is the first step in mitigating risk during supplier qualification audits.
Matching Physical and Chemical Properties: Boiling Point 167°C and EINECS 219-860-5
Matching the physical and chemical properties of the original reagent is the primary technical hurdle when switching suppliers. The boiling point is a critical distillation parameter that indicates purity and volatility during processing. For this specific arylsilane, the boiling point is recorded at 167°C at 15 mmHg. Deviations from this standard can suggest the presence of lower boiling solvents or higher boiling oligomers, which may interfere with downstream reactions.
Regulatory compliance is equally dependent on matching identification numbers such as the EINECS registration. The EINECS 219-860-5 number confirms the substance's status within the European Chemicals Agency inventory. Maintaining this identifier ensures that safety data sheets and regulatory filings remain valid across global jurisdictions. Any discrepancy in these fundamental identifiers can trigger costly compliance reviews during quality assurance checks.
Industrial purity levels must meet or exceed the 97% threshold typically required for sensitive coupling reactions. Impurities such as residual chlorosilanes or hydrolysis products can catalyze unwanted side reactions or degrade catalyst performance. High industrial purity ensures that the stoichiometry of the reaction remains predictable, reducing the need for excessive purification steps post-synthesis. This level of quality control is vital for maintaining yield consistency in pilot plant operations.
| Property | Specification |
|---|---|
| CAS Number | 2553-19-7 |
| Boiling Point | 167°C / 15 mmHg |
| EINECS | 219-860-5 |
| Purity | > 97% |
| Molecular Weight | 272.42 g/mol |
Validated Performance for Arylsilane Cross-Coupling and Hydrophobic Coating
The validated performance of this organosilicon compound is evident in its application as a key Silane coupling agent for arylsilane cross-coupling reactions. In palladium-catalyzed processes, the phenyl groups provide the necessary steric and electronic environment for efficient carbon-carbon bond formation. The ethoxy groups serve as leaving groups that facilitate the activation of the silicon center during transmetallation steps. This dual functionality makes it indispensable for constructing complex biaryl structures found in pharmaceuticals.
Beyond synthesis, the material is extensively used for creating hydrophobic coatings on inorganic substrates. The aromatic substituents enable the silane to induce surface hydrophobicity by shielding polar surfaces from interaction with water. A successful hydrophobic coating must eliminate hydrogen bonding, and this molecule creates a non-polar interphase that protects composite structures. Understanding the Thermal Stability Phenyl Silicone Vs Alkyl dynamics is crucial when selecting this material for high-temperature coating applications.
Phenyl-substituted silanes generally offer superior thermal resistance compared to their alkyl counterparts. This property is essential for coatings exposed to harsh environmental conditions or elevated processing temperatures. The stability of the phenyl ring prevents oxidative degradation, ensuring the longevity of the protective layer. R&D teams should leverage this thermal stability when designing materials for aerospace or automotive components where heat resistance is paramount.
The versatility of this reagent extends to modifying surface energy without compromising water vapor permeability. Although silane and silicone derived coatings are highly hydrophobic, they maintain a degree of breathability that reduces deterioration at the coating interface. This balance prevents entrapped water from causing delamination or corrosion underneath the protective layer. Such performance characteristics validate its use in demanding industrial environments where surface protection is critical.
Safety and Regulatory Data: TSCA Status and HMIS 2-1-0-X Ratings
Safety and regulatory data form the backbone of any chemical procurement decision, particularly for international shipments. The substance is listed on the TSCA inventory, indicated by TSCA Yes status, which facilitates import into the United States without additional pre-manufacture notices. This compliance status simplifies the logistics for American laboratories and manufacturing facilities seeking to integrate this silane into their processes without regulatory delays.
The Hazardous Materials Identification System (HMIS) rating for this compound is classified as 2-1-0-X. This rating indicates a health hazard of 2, flammability of 1, and physical hazard of 0, with personal protection designated as X. Understanding these ratings is essential for safety officers when designing storage protocols and selecting appropriate personal protective equipment for handling personnel. Proper adherence to these guidelines minimizes occupational exposure risks during bulk transfer operations.
With a flash point of 175 °C, the material is considered combustible but not highly flammable under standard ambient conditions. However, standard precautions for handling combustible liquids should still be enforced to prevent ignition sources near storage areas. Safety data sheets must be readily available to all personnel involved in the handling, storage, and disposal of the chemical. Comprehensive documentation ensures that emergency response teams are prepared in the event of a spill or exposure incident.
Regulatory adherence also extends to environmental protection measures during waste disposal. As an organosilicon compound, degradation products must be managed according to local environmental regulations to prevent soil or water contamination. Laboratories should establish clear protocols for quenching reactive silane residues before disposal. Maintaining strict safety standards protects both personnel and the environment while ensuring continuous operational compliance.
Maintaining Batch Consistency for Refractive Index 1.5269 and Density 1.0329 g/mL
Maintaining batch consistency is critical for parameters such as Refractive Index and Density, which serve as quick quality control checks. The specified Refractive Index @ 20˚C is 1.5269, a precise optical property that correlates with the purity of the liquid phase. Deviations in this value can indicate contamination or variations in the phenyl-to-ethoxy ratio, which would alter reactivity. Consistent optical properties ensure that every batch performs identically in optical coating formulations or analytical standards.
Density is another fundamental physical constant used to verify batch integrity during intake inspection. The target Density is 1.0329 g/mL, which must be maintained within tight tolerances to ensure accurate volumetric dosing in automated synthesis reactors. Variations in density can lead to incorrect molar equivalents being added to reactions, potentially skewing yield and selectivity. Rigorous monitoring of this parameter is part of a robust quality assurance program.
Achieving this level of consistency requires advanced process control during production. Insights into Diphenyldiethoxysilane Synthesis Route Optimization reveal how manufacturing variables are controlled to minimize byproduct formation. By optimizing the synthesis route, manufacturers can ensure that the final DPDES product meets exacting specifications batch after batch. This technical depth separates premium suppliers from commodity traders.
NINGBO INNO PHARMCHEM CO.,LTD. ensures that every shipment is accompanied by a comprehensive COA detailing these critical physical constants. This documentation allows quality control teams to verify material identity before releasing it for production use. Traceability and consistency are the hallmarks of a reliable chemical partner, ensuring that R&D outcomes are reproducible regardless of the procurement date.
To request a batch-specific COA, SDS, or secure a bulk pricing quote, please contact our technical sales team.