3-Isocyanatopropyltrimethoxysilane Bulk Price Specs & Data

3-Isocyanatopropyltrimethoxysilane Bulk Price Structure and Volume Discounts

Procurement strategies for 3-Isocyanatopropyltrimethoxysilane rely on understanding the volatility of raw material costs associated with chloropropyltrimethoxysilane and sodium cyanate precursors. Bulk pricing is typically structured around volume tiers, with significant unit cost reductions available for orders exceeding 1,000 kg. Standard packaging configurations include 200 kg lined steel drums or 1,000 kg IBC totes, designed to maintain anhydrous conditions during transit. Spot pricing fluctuates based on silicon metal availability and energy costs required for distillation processes.

For long-term supply agreements, fixed-price contracts can be negotiated to hedge against market variance. NINGBO INNO PHARMCHEM CO.,LTD. provides transparent cost breakdowns based on Incoterms, ensuring logistics and insurance are accounted for in the final landed cost. Buyers should request quotes specifying delivery location and required documentation, such as certificates of analysis, to avoid administrative delays. Volume discounts generally apply to quarterly commitments rather than one-off purchases, facilitating better production planning for downstream formulation manufacturers.

Critical Technical Specifications: Purity, Molecular Weight, and Density Data

Accurate formulation requires precise physical property data to calculate stoichiometric ratios in cross-linking reactions. The molecular weight of 247.37 g/mol is critical for determining molar equivalents when reacting with polyols or amine-functionalized substrates. A purity level of 94.50% minimum is standard for industrial grade 3-Isocyanatopropyltrimethoxysilane Silane Coupling Agent materials, ensuring minimal interference from hydrolysis byproducts or unreacted silanol groups. Density values directly impact volumetric dosing equipment calibration in automated mixing lines.

The following table outlines the essential physical and chemical parameters required for quality control verification against incoming batch COAs:

Parameter	Specification Value	Test Method
CAS Number	15396-00-6	N/A
Molecular Formula	C10H21NO4Si	Calculated
Molecular Weight	247.37 g/mol	Mass Spec
Purity (GC)	≥ 94.50%	GC-MS
Density @ 20°C	0.990 g/mL	ASTM D4052
Boiling Point	130°C @ 20 mmHg	Distillation
Refractive Index @ 20°C	1.4190	ASTM D1218
Flash Point	80 °C	Pensky-Martens

Deviation in refractive index often indicates contamination with higher boiling silane oligomers. Procurement teams should validate GC-MS chromatograms to confirm the absence of dimers or trimers which can affect cure kinetics in sealant applications. Consistency in density is equally vital for maintaining uniform coating thickness in industrial primers.

TSCA Compliance, EINECS, and HMIS Safety Ratings for Bulk Chemical Procurement

Regulatory alignment is a prerequisite for importing functional silanes into North American manufacturing facilities. This material is listed on the Toxic Substances Control Act (TSCA) inventory, confirming eligibility for commercial use within the United States without pre-manufacture notice requirements. The EINECS number 246-467-6 serves as the primary identifier for European inventory tracking, though specific regulatory compliance beyond inventory listing must be verified independently by the importer.

Safety handling protocols are dictated by the HMIS rating of 3-2-1-X. The health hazard rating of 3 indicates that short exposure could cause serious temporary or residual injury, necessitating the use of supplied-air respirators during drum decanting operations. The flammability rating of 2 reflects the flash point of 80 °C, requiring storage away from open flames and spark-generating equipment. Reactivity is rated at 1, meaning the material is normally stable but can become unstable at elevated temperatures or pressures. Moisture sensitivity is high; therefore, containers must remain sealed under nitrogen blanketing to prevent premature polymerization into polysiloxanes.

Personal protective equipment must include chemical-resistant gloves and splash goggles. In the event of a spill, absorbent materials should be used immediately, followed by neutralization procedures compatible with isocyanate functionality. Proper ventilation is mandatory to keep airborne concentrations below permissible exposure limits.

Differentiating 3-Isocyanatopropyltrimethoxysilane from Triethoxysilylpropylisocyanate

Selection between methoxy and ethoxy functionalized silanes depends on hydrolysis rates and volatility profiles required by the specific application. 3-Isocyanatopropyltrimethoxysilane (IPTMS) features three methoxy groups, which hydrolyze faster than ethoxy groups due to lower steric hindrance and higher electrophilicity of the silicon center. This results in quicker sol-gel transition times, beneficial for high-speed coating lines where dwell time is limited.

Conversely, triethoxysilylpropylisocyanate exhibits slower hydrolysis kinetics, offering extended pot life in moisture-cure formulations. The methoxy variant releases methanol upon hydrolysis, whereas the ethoxy variant releases ethanol. This distinction impacts VOC calculations and regulatory reporting for finished goods. Additionally, the boiling point of the methoxy derivative is generally lower than its ethoxy counterpart, influencing stripping processes during purification.

For formulators seeking specific performance benchmarks, understanding these kinetic differences is essential when substituting materials. Those evaluating 3-Isocyanatopropyltrimethoxysilane Drop-In Replacement For Geniosil Gf 40 must account for the methoxy versus ethoxy functionality to ensure cure schedules align with existing production parameters. Methoxy silanes often provide superior adhesion to inorganic substrates due to the rapid formation of silanol intermediates that condense with surface hydroxyls.

Performance Applications in Hybrid Organic Inorganic Urethanes

The primary utility of this isocyanato-functional silane lies in the synthesis of hybrid organic-inorganic urethanes. The isocyanate group reacts readily with hydroxyl-terminated polyols to form urethane linkages, while the trimethoxysilane moiety remains available for moisture cure or covalent bonding to glass and metal surfaces. This dual functionality enables the creation of single-component systems that cure upon exposure to atmospheric humidity.

In adhesive formulations, the silane acts as a cross-linker that enhances cohesive strength and environmental resistance. The resulting network exhibits improved thermal stability and hydrolytic resistance compared to standard organic polyurethanes. NINGBO INNO PHARMCHEM CO.,LTD. supplies high-purity grades suitable for demanding optical and electronic encapsulation tasks where ionic contamination must be minimized. The refractive index of 1.4190 allows for optical clarity in transparent bonding applications.

Hybrid systems also benefit from the flexibility of the propyl spacer chain, which reduces internal stress during cure shrinkage. This is particularly important in assemblies involving dissimilar materials with different coefficients of thermal expansion. Proper stoichiometric balance between the isocyanate and polyol components ensures optimal physical properties without excessive brittleness.

Technical teams should review formulation guides to optimize catalyst selection, typically using tin or amine catalysts compatible with isocyanate chemistry. Moisture control during mixing is critical to prevent premature gelation in the bulk mixture. End-users prioritizing supply chain stability should secure contracts that guarantee consistent batch-to-batch purity specifications.

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