Tetrabutanone Oximinosilane Bulk Price Specs & Data
Essential Technical Specifications for Tetrabutanone Oximinosilane Bulk Orders
Procurement teams require precise analytical data to validate Tetrabutanone Oximinosilane (CAS: 34206-40-1) for integration into silicone elastomer formulations. This organosilicon compound functions primarily as a cross-linking agent, featuring four butanone oxime functional groups attached to a central silicon atom. The molecular weight is 548.99 g/mol, and the substance typically presents as a yellow transparent liquid when dissolved in solvent carriers such as toluene. Quality control protocols focus on the active content of Tetrakis(methylethylketoximino)silane (TOS) and the minimization of free oxime and dimer impurities, which directly impact shelf stability and cure kinetics.
At NINGBO INNO PHARMCHEM CO.,LTD., production batches are verified against strict gas chromatography (GC) standards to ensure consistency. The following table outlines the critical parameters for bulk industrial grades, distinguishing between active silane content and solvent carriers.
| Parameter | Specification Range | Test Method |
|---|---|---|
| Appearance | Yellow Transparent Liquid | Visual / ASTM D1209 |
| TOS (Active Content) | 45-50 wt.% | GC-MS |
| TOS-Dimer | < 4 wt.% | GC-MS |
| Free Butanone Oxime | < 4 wt.% | GC-MS |
| Toluene (Solvent) | 45-50 wt.% | GC-MS |
| Purity (Neat Equivalent) | ≥ 98% | GC-MS |
| Shelf Life | 12 Months (Unopened) | Stability Test |
Storage conditions must maintain temperatures at 25°C or below in original unopened containers to prevent premature hydrolysis. Expired products require re-testing via COA verification before use in sensitive neutral cure system applications. Packaging standards typically include 200kg iron drums or 950kg IBC containers, classified under Dangerous Goods Class 3 for logistics planning.
Bulk Price Determinants and Volume Tiering for Oxime Silane Crosslinkers
Commercial pricing for Butanone oxime silane derivatives is not static; it fluctuates based on raw material availability, solvent purity, and logistical complexity. The primary cost driver is the synthesis of the oximosilane backbone, which requires high-purity chlorosilanes and ketoximes. Procurement managers should anticipate volume tiering where 200kg drum orders carry a different unit cost compared to ISO tank or multi-IBC shipments. Freight costs significantly impact the landed price due to the hazardous classification of the material.
Specifications also dictate price variance. Grades with lower free oxime content (< 2%) command premium pricing due to the additional distillation steps required during manufacturing. Conversely, standard grades with 45-50% active content in toluene offer a cost-effective solution for general-purpose sealants. Buyers should request detailed quotations that separate the chemical cost from the hazardous material surcharge. Supply contracts often include clauses for raw material indexation, protecting both the manufacturer and the buyer from volatile petrochemical market shifts. Long-term agreements typically secure better tiering than spot purchases, ensuring budget stability for formulation teams.
Navigating EU MEKO Bans with Low-MEKO and No-MEKO Silane Alternatives
Regulatory landscapes regarding volatile organic compounds (VOCs) and specific oxime emissions have tightened globally. Traditional oxime silanes release 2-butanone oxime (MEKO) during the moisture-curing process. While effective, MEKO faces increasing restrictions in specific markets due to toxicity classifications. Formulators must adapt by transitioning to low-MEKO or no-MEKO cross-linking agent technologies without sacrificing performance.
Alternative chemistries include acetoxime, methyl isobutyl ketoxime (MIBKO), and 2-pentanoneoxime (MPKO) based silanes. MIBKO and MPKO variants function similarly to standard TOS but release less regulated cleavage products. For example, Methyltris(methylisobutylketoximino)silane and Vinyltris(2-pentanoneoxime)silane provide viable pathways for compliance. These alternatives maintain the neutral cure profile required for sensitive substrates while mitigating regulatory risk. Procurement strategies should involve dual-sourcing strategies that include both standard TOS for non-restricted regions and MIBKO/MPKO blends for regulated markets. This ensures supply chain continuity regardless of shifting environmental directives.
Reactivity Profiles and Curing Rates for Neutral Moisture-Curing Sealants
The selection of a Silane coupling agent or crosslinker dictates the processing window and final physical properties of the silicone elastomer. Oxime silane based crosslinkers facilitate the crosslinking of hydroxy-functionalized silicone polymers under the effect of a catalyst and atmospheric moisture. Unlike acid or alkaline systems, this process releases 2-butanone oxime rather than acetic acid or amines, making it suitable for sensitive substrates such as marble, metals, and coated glass where corrosion or odor is a concern.
Reactivity varies significantly by molecular structure. The general reactivity rule for oximino silanes follows the order: Tetra-functional (TOS) > Vinyl-functional (VOS) > Mono-functional (MOS). TOS provides rapid skin-over times and fast tack-free development, ideal for high-speed production lines. VOS offers a balanced cure rate with improved elastic recovery properties. MOS acts primarily as a chain extender or adhesion promoter rather than a primary crosslinker. By understanding these profiles, engineers can predict the Tetrabutanone Oximinosilane oximosilane crosslinker performance in specific formulations. Mixing different crosslinker types enables precise setting of the formulation rate, adjusting skin-over time, curing rate, and time to first elastic recovery to meet ASTM or ISO performance standards.
Custom Blending Options and Supply Chain Reliability for Procurement Teams
Standard off-the-shelf grades do not always meet the specific rheological requirements of advanced sealant formulations. Manufacturers often provide custom blending services where oximino silane crosslinker blends with different ratios are prepared upon request. This allows for the fine-tuning of viscosity and reactivity without requiring the formulator to manage multiple SKUs. For teams seeking consistency with previous supply chains, verifying Tetrabutanone Oximinosilane drop-in replacement for bulk grades ensures minimal disruption during supplier transitions.
Supply chain reliability depends on the manufacturer's capacity to maintain stock levels of hazardous materials amidst logistical constraints. NINGBO INNO PHARMCHEM CO.,LTD. maintains advanced production technologies and quality control systems to ensure that products meet the highest standards of quality and purity consistently. Reliable partners provide transparent lead times, batch-specific COAs, and stability data to support regulatory filings. Procurement teams should prioritize suppliers who offer flexible delivery options and can scale from drum to IBC volumes seamlessly. Establishing a verified supply agreement mitigates the risk of production downtime caused by raw material shortages.
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