Kstone is a participating compiling unit of the standard 【Technical Specification for Perfluoroisobutyronitrile (PFIB) Mixed Gas Refilling Equipment (T-CEC 1092-2025)】

C₄F₇N (Perfluoroisobutyronitrile/PFIB): Key Info for Industrial Applications

Core Features

• Eco-friendly: GWP (Global Warming Potential) ~2,090, far lower than SF₆ (GWP ~23,500), compliant with international carbon neutrality policies and F-Gas regulations.
• Technical Performance: Dielectric strength ~1.2x that of SF₆, with arc-quenching capability comparable to SF₆, meeting high-voltage equipment requirements.
• Physical Properties: Colorless, odorless, chemically stable, and non-toxic under normal conditions (ventilation required at high concentrations).
• Practical Use: Typically mixed with CO₂/O₂ (e.g., 3.5% C₄F₇N + 96.5% CO₂) to lower boiling point (-40℃ below), suitable for outdoor low-temperature scenarios.

Main Applications

• Primary use: Replaces SF₆ in high-voltage equipment (GIS, GIL, circuit breakers, ring main units) for power industry environmental upgrades.
• Secondary markets: Gas detection (leakage, purity, moisture analysis), semiconductor etching, and specialty fire suppression.

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