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Non-corrosive formulation specifically engineered to preserve surface integrity of 5xxx and 6xxx series aluminum alloys.
pH-neutral (pH 6.8–7.2) aqueous solution—minimizes risk of etching, staining, or hydrogen embrittlement.
Low-foaming profile ensures compatibility with automated spray washers, immersion tanks, and ultrasonic cleaning systems.
Biodegradable surfactant system compliant with OECD 301B screening criteria for ready biodegradability.
No added heavy metals, phosphates, or chlorinated solvents—meets RoHS Directive 2011/65/EU requirements.
Pre-treatment cleaning prior to anodizing, powder coating, or chromate conversion coating of extruded aluminum profiles.
Removal of rolling oils, drawing compounds, and fingerprint residues from precision-machined aerospace aluminum components.
Final rinse cleaning of heat exchanger fins, automotive radiator cores, and HVAC coil assemblies.
Surface preparation for adhesive bonding in transportation and structural aluminum fabrication.
Cleaning of aluminum die-cast housings prior to electroplating or painting in electronics enclosures.
| Chemical Type | Aqueous alkaline-free, non-ionic/cationic balanced surfactant blend |
| Product Form | Concentrated liquid (ready-to-dilute) |
| Appearance | Clear, light amber liquid, free of sediment or phase separation |
| pH (1% w/w aqueous solution, 25°C) | 6.8 – 7.2 |
| Density (25°C) | 1.04 – 1.07 g/cm³ |
| Primary Applications | Aluminum alloy surface cleaning, pre-coating/degreasing, post-machining residue removal |
| Key Features | Non-etching, low-foam, non-volatile organic compound (NVOC), no amine odor |
| Regulatory Compliance | REACH SVHC-free (as per latest Candidate List), SDS available per GHS Rev. 10 |
| Common Compatible Systems | Suitability |
| Stainless steel immersion tanks with stainless heaters & recirculation pumps | Highly Recommended – No corrosion observed after 12-month continuous use |
| Plastic-lined spray washers (PP, PVDF, or FRP construction) | Highly Recommended – Chemically inert; no swelling or stress cracking |
| Ultrasonic cleaning systems (40 kHz, aqueous bath) | Recommended – Optimal performance at 50–60°C; avoid prolonged exposure >70°C |
| Automated conveyorized parts washers with hot-air dry-off | Suitable – Compatible with standard drying cycles; no film or residue left behind |
Q1: What is the CAS Registry Number for KEY-198?
A: KEY-198 is a proprietary multi-component formulation; individual ingredients are disclosed in Section 3 of the Safety Data Sheet (SDS), but the final mixture does not carry a single CAS number per IUPAC and ECHA guidelines.
Q2: What is the recommended working concentration and temperature range?
A: For most applications, dilute 3–8% v/v in deionized or softened water; optimal cleaning occurs at 45–60°C. Higher concentrations (>10%) do not improve efficacy and may reduce rinseability.
Q3: How does KEY-198 compare to traditional alkaline cleaners for aluminum?
A: Unlike high-pH alkaline cleaners (pH >10), KEY-198 avoids saponification of aluminum oxides and eliminates micro-etching—preserving dimensional accuracy and matte/satin finishes without post-acid neutralization.
Q4: Does KEY-198 meet FDA or EU food-contact compliance requirements?
A: KEY-198 is not certified for direct food-contact surfaces under FDA 21 CFR §178.3400 or EU 10/2011; however, it leaves no extractable residues when rinsed per validated protocols and is widely used for indirect food equipment (e.g., aluminum packaging line components).
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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
