Binzhenghong PTFE Multi-Neck Round-Bottom Reaction Flask

Overview

The Binzhenghong PTFE Multi-Neck Round-Bottom Reaction Flask is a high-purity, chemically inert laboratory vessel engineered for demanding synthetic, catalytic, and analytical applications where metal-free, acid-resistant, and thermally stable containment is essential. Constructed entirely from virgin polytetrafluoroethylene (PTFE), this flask operates across an exceptional thermal range of −200 °C to +250 °C and exhibits near-zero extractables, making it suitable for ultra-trace analysis, fluorination chemistry, HF-based etching, and high-purity solvent handling. Unlike glass or coated alternatives, its monolithic PTFE structure eliminates delamination risk, interfacial leaching, or hydrolytic degradation—even under prolonged exposure to concentrated sulfuric acid, aqua regia, or molten alkali metals. The round-bottom geometry ensures uniform thermal distribution during heating or cooling, while standardized ground-glass–compatible necks (17/23, 19/22, 24/29) enable seamless integration with condensers, thermometers, dropping funnels, and gas inlet/outlet assemblies.

Key Features

• Fully disassemblable design: threaded necks, caps, and base sections separate without tools—enabling full access for ultrasonic cleaning, visual inspection, and residue verification per GLP audit requirements.
• Mirror-polished internal surface (Ra < 0.2 µm): minimizes sample adhesion, facilitates quantitative recovery, and reduces carryover in sequential batch processing.
• Chemical resistance validated per ASTM D4894 and ISO 1043-4: resistant to all common organic solvents, strong oxidizers (e.g., fuming nitric acid), and corrosive gases (Cl₂, F₂, Br₂ vapors) at elevated temperatures.
• Thermal shock immunity: no cracking or crazing observed after rapid immersion from −196 °C (liquid nitrogen) to +250 °C (hot oil bath), confirmed via ASTM D5422 thermal cycling protocol.
• OEM customization capability: custom neck angles, port diameters, integrated sampling valves, or laser-etched volume graduations available upon engineering review and material traceability documentation.

Sample Compatibility & Compliance

This PTFE reaction flask is routinely deployed in USP , ISO 10993-12, and ASTM E2325-compliant workflows for pharmaceutical intermediate synthesis, battery electrolyte formulation, and semiconductor-grade chemical purification. Its non-reactive surface prevents catalytic decomposition of peroxides, azides, or organolithium reagents. All units are manufactured under ISO 9001-certified processes; material lot traceability, FTIR identity verification (ASTM E1252), and extractables testing reports (per USP ) are supplied with each order. Not intended for pressure applications exceeding 0.2 MPa (30 psi) without external reinforcement or safety shielding.

Software & Data Management

While inherently hardware-only, the flask integrates into digitally controlled reactor systems (e.g., ChemSpeed AutoMate, Huber Unistat, or ThalesNano H-Cube Pro) via standardized mechanical mounting interfaces. When used with automated platforms, its dimensional consistency and repeatable joint torque specifications support reliable actuator coupling and leak-tight sealing validation via integrated pressure decay testing (per ASTM E499). Batch records generated on compliant LIMS or ELN platforms (e.g., LabWare LIMS, Benchling) may reference flask serial numbers and material certificates to satisfy FDA 21 CFR Part 11 electronic record integrity requirements.

Applications

• Synthesis of air/moisture-sensitive organometallic compounds (e.g., Grignard, Schlenk-line reactions) under inert atmosphere.
• High-temperature hydrothermal synthesis of MOFs and nanomaterials using autoclave-compatible configurations.
• Trace-metal-free digestion of geological or biological matrices prior to ICP-MS analysis.
• In-process monitoring of polymerization kinetics via inline IR or Raman probes inserted through auxiliary necks.
• Calibration and validation of pH, conductivity, or dissolved oxygen sensors in aggressive media (e.g., hot KOH solutions).

FAQ

Can this flask be used under vacuum or positive pressure?

Yes—rated for continuous operation at ≤0.2 MPa (30 psi) gauge pressure or ≤10 mbar absolute vacuum when assembled with correctly torqued joints and verified seal integrity.

Is PTFE susceptible to cold flow under clamping force?

Minimal cold flow occurs below 150 °C; use calibrated torque wrenches (recommended: 0.8–1.2 N·m for 24/29 joints) and avoid over-tightening. Optional PTFE-coated stainless-steel reinforcement collars are available for long-term static loading.

How does it compare to PFA or FEP flasks?

PTFE offers superior temperature stability and chemical resistance versus PFA/FEP but lacks optical transparency. It is preferred for high-temperature reflux, aggressive halogen chemistry, and applications requiring zero carbon chain mobility.

Do you provide cleaning validation protocols?

Yes—customizable SOPs aligned with ISO 17025 and ASTM E3082 are available, including swab recovery studies, TOC rinse testing, and residual solvent GC-MS analysis templates.

Are custom joint sizes or metric threads supported?

Yes—non-standard DIN, ISO, or customer-specific thread profiles (e.g., M27×1.5, G1/4″) can be machined subject to minimum order quantity and dimensional feasibility review.