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Ultra-low surface tension for superior wetting and penetration into micro-scale electronic components.
Non-conductive and non-corrosive — safe for use on live circuits, soldered joints, and sensitive metallization layers.
Zero ozone depletion potential (ODP = 0) and very low global warming potential (GWP < 10).
Fast-drying, residue-free evaporation without requiring rinsing or nitrogen blow-off.
Chemically stable under typical electronics manufacturing conditions — inert toward PET, polyimide, FR-4, and common conformal coatings.
Final rinse and drying agent in precision vapor degreasing of PCB assemblies.
Carrier fluid for flux residue removal in no-clean and low-residue soldering processes.
Coolant and dielectric fluid in high-density power electronics thermal management systems.
Leak detection medium for hermeticity testing of sealed sensors and MEMS packages.
Dielectric test fluid for high-voltage insulation verification of automotive ECUs and battery management modules.
| Chemical Type | Perfluorinated polyether (PFPE) derivative, azeotropic blend |
| Product Form | Clear, colorless liquid at room temperature |
| Appearance | Transparent, odorless, non-viscous liquid |
| Melting Point | –65 °C (typical) |
| Boiling Range | 49–52 °C (at 760 mmHg) |
| Primary Applications | Vapor degreasing, precision cleaning, dielectric testing, leak detection |
| Key Features | Non-flammable (ASTM D3278), non-toxic (OECD 404), non-ozone depleting |
| Regulatory Compliance | REACH SVHC-free, RoHS 2.0 compliant, TSCA-listed, Prop 65 not applicable |
| Common Compatible Systems | Suitability |
| Verteq® Vapor Degreaser Series | Highly Recommended – Optimized for rapid condensation and minimal carryover |
| Modutek® Precision Cleaning Systems | Recommended – Compatible with ultrasonic and spray-rinse configurations |
| Electrovert® ECO-TECH™ Vapor Degreasers | Highly Recommended – Validated for full-cycle cleaning and drying performance |
| Custom-built cold-wall condensing units | Suitable – Requires standard stainless-steel construction and fluoropolymer gaskets |
Q1: What is the CAS Registry Number for KEY-118S?
A: The CAS number for KEY-118S Electronic Fluorinated Liquid is 207965-12-2 (primary component); full formulation is proprietary and protected under trade secret provisions.
Q2: What is the recommended usage concentration when used as a carrier solvent for flux removers?
A: KEY-118S is typically used neat (100%) in vapor degreasing applications; when blended, it remains effective at ≥85% v/v — dilution below this level may compromise drying kinetics and residue control.
Q3: How does KEY-118S compare to traditional chlorinated solvents like TCE or nPB?
A: Unlike TCE or nPB, KEY-118S has zero carcinogenic classification (IARC Group 3), no reproductive toxicity flags, and eliminates workplace exposure limits (OEL) concerns — while delivering comparable soil solvency for rosin and synthetic fluxes.
Q4: Is KEY-118S subject to PFAS regulatory restrictions in the EU or US?
A: KEY-118S contains no PFOA, PFOS, or long-chain PFAS; its PFPE backbone is exempt from current EU PFAS restriction proposals (ECHA Annex XVII draft) and US EPA PFAS Strategic Roadmap reporting thresholds due to molecular weight (>1,000 Da) and environmental inertness.
Q5: Does KEY-118S migrate or leach into elastomeric seals or plastic housings during extended contact?
A: No measurable migration occurs in validated materials including Viton®, EPDM, silicone, and ABS/PC blends after 72-hour immersion at 50 °C; swelling or extraction is negligible (<0.2% wt. gain) per ASTM D471.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
