Diphenyldimethoxysilane Bulk Procurement Specs & Data
Critical Chemical Identity: Diphenyldimethoxysilane CAS and Formula Verification
Procurement validation for organosilicon intermediates begins with precise CAS registry verification to prevent cross-contamination in downstream synthesis. The target compound, Diphenyldimethoxysilane, is strictly identified under CAS 6843-66-9. This distinguishes it from structurally similar analogs such as dimethyl diphenylsilane (CAS 778-24-5), which lacks the methoxy functionality required for specific condensation reactions. The molecular formula is C14H16O2Si, with a molecular weight of approximately 244.36 g/mol. Accurate identification is critical because the presence of methoxy groups dictates hydrolysis rates and compatibility with polymer backbones.
In industrial contexts, this material is frequently referenced as Dimethoxydiphenylsilane or DPDMOS. When auditing supplier documentation, procurement managers must ensure the Certificate of Analysis (COA) reflects the correct InChIKey and structural configuration. Deviations in chemical identity can compromise the performance of silicone fluids or act as ineffective electron donors in catalytic systems. For facilities evaluating process efficiency, understanding the Industrial Diphenyldimethoxysilane synthesis route optimization is essential to anticipate impurity profiles such as residual chlorosilanes or incomplete alkoxylation byproducts.
Defining Diphenyldimethoxysilane Bulk Procurement Specifications and Spectral Verification
Technical acceptance criteria for bulk Phenyl Dimethoxysilane orders rely on chromatographic purity and distillation ranges rather than generic descriptions. High-performance applications require GC area percentages exceeding 98.0%, with strict limits on water content to prevent premature hydrolysis during storage. Spectral verification via FTIR should confirm characteristic Si-O-C stretching bands around 1080 cm⁻¹ and aromatic C-H stretches near 3050 cm⁻¹. Procurement specifications must explicitly define acceptable tolerances for color (APHA) and acidity to ensure compatibility with sensitive catalytic environments.
The following table outlines typical technical parameters for industrial-grade material compared against standard purity thresholds used in silicone intermediate manufacturing:
| Parameter | Typical Specification | Test Method |
|---|---|---|
| Appearance | Colorless Clear Liquid | Visual / APHA |
| Purity (GC Area %) | ≥ 98.0% | Gas Chromatography |
| Boiling Point | 130-135°C @ 12 mmHg | Distillation |
| Water Content | ≤ 0.05% | Karl Fischer |
| Acidity (as HCl) | ≤ 0.01% | Titration |
| Refractive Index (n20/D) | 1.530 - 1.550 | Refractometry |
When sourcing Diphenyldimethoxysilane DPDMOS silane monomer, buyers should request batch-specific GC-MS reports to verify the absence of heavy ends or light boilers. In polypropylene manufacturing, this compound functions as a critical external electron donor. The stereo-regularity of the final polymer is directly influenced by the purity of the silane donor. Detailed insights on this application are available in our analysis of Diphenyldimethoxysilane external electron donor for Ziegler-Natta polypropylene. Consistency in these specifications minimizes reactor fouling and ensures consistent melt flow indices in the final resin.
Industrial Packaging Options and Storage Stability for Methoxysilane Intermediates
Alkoxysilanes are moisture-sensitive compounds that require hermetic sealing to maintain stability during transit and warehousing. Standard industrial packaging includes 200L lined steel drums or 1000L IBC totes equipped with pressure-relief valves to manage potential gas evolution from trace hydrolysis. Drum liners must be compatible with organosilicon compounds to prevent leaching of plasticizers that could contaminate the bulk liquid. For long-term storage, containers should remain in a cool, dry, and well-ventilated area away from oxidizing agents and acids.
Shelf life is typically 12 months from the date of manufacture when stored in unopened original containers. Once opened, the material should be used immediately or blanketed with dry nitrogen to prevent atmospheric moisture ingress. Procurement teams must verify that packaging labels include appropriate GHS pictograms indicating flammability and irritation hazards. Bulk shipments often require temperature-controlled logistics if transporting through high-humidity regions to prevent condensation inside vented containers. Proper handling protocols reduce the risk of gelation or viscosity changes caused by partial polymerization.
Regulatory Compliance and Safety Data Sheets for Bulk Silane Sourcing
Supply chain compliance for organosilicon intermediates centers on accurate Safety Data Sheets (SDS) and transport classification. The material is generally classified under UN 3265 (Corrosive liquid, acidic, organic, n.o.s.) or similar classifications depending on regional transport regulations. SDS documentation must provide clear guidance on firefighting measures, specifically noting that water spray may react with the substance to produce flammable gases. Personal protective equipment (PPE) requirements typically include chemical-resistant gloves, safety goggles, and respiratory protection during handling of vapors.
While regulatory frameworks vary by region, quality assurance focuses on documented conformance to internal specifications rather than external certifications. Buyers should ensure the supplier provides batch-specific traceability linking the production lot to the COA. This documentation is vital for quality audits in downstream industries such as aerospace coatings or medical device manufacturing. NINGBO INNO PHARMCHEM CO.,LTD. maintains rigorous documentation standards to support these audit requirements. Environmental disposal procedures must adhere to local hazardous waste regulations, as hydrolysis products can alter pH levels in wastewater systems.
Supply Chain Reliability and Lead Times for Industrial Silane Orders
Reliable sourcing of specialty silanes depends on robust production scheduling and inventory management. Lead times for bulk orders typically range from 2 to 4 weeks depending on current production cycles and vessel availability. Manufacturers with integrated supply chains can offer greater stability against raw material fluctuations, such as changes in chlorosilane or methanol pricing. Procurement contracts should define Incoterms clearly, with FOB and CIF options available to manage logistics risk.
Consistency in supply is critical for continuous process industries where interruption can lead to significant downtime costs. NINGBO INNO PHARMCHEM CO.,LTD. prioritizes transparent communication regarding production status and shipment tracking. Buyers should establish forecast agreements to secure capacity during peak demand periods. Quality consistency across batches is maintained through standardized reactor protocols and final QC release testing. By aligning procurement cycles with production schedules, manufacturers can minimize inventory holding costs while ensuring uninterrupted access to critical silicone intermediates.
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