Item Name: Aquanox® A4638
Manufacturer: Kyzen Corporation
Soil/Flux Compatibility: Removes water-soluble polar flux residues and soils from advanced packaging assemblies
Chemistry/Key flags: Biodegradable aqueous solution, non-hazardous, CFC/HAP-free, low surface tension for precision cleaning
Process/Equipment: Spray cleaning, batch washers, in-line washers, ultrasonic systems, stencil washers, vapor degreasers
Package Size: 1 gal, 5 gal, 55 gal, 5 L, 25 L, 200 L
Shelf Life: 5 years (≥5 gal / 25 L)
Product Overview
Aquanox® A4638 is an advanced cleaning agent engineered for electronic assembly and packaging applications, specifically designed to remove flux residues from flip chip and low-clearance components. This non-hazardous, biodegradable aqueous solution exhibits low surface tension, rapidly dissolves water-soluble soils, and allows for use at low concentrations, resulting in short process times. With a pH of 9.4 (10 g/L), a boiling point of 100°C (212°F), and full water solubility, A4638 provides excellent material compatibility and an environmentally responsible alternative for precision cleaning.
Applications
Spray cleaning of flip chip and low-clearance electronic components.
Effective removal of water-soluble polar flux residues.
Suitable for rapid cleaning at low concentrations, reducing process times.
Compatible with all materials commonly used in electronic assembly and packaging.
Typical Properties – Specifications
pH (10 g/L): 9.4
Boiling Point: 100°C / 212°F
Flash Point: None
Water Solubility: Complete
VOC (10% solution): 44.3 g/L
Operating Concentration: <10%
Temperature: <66°C / 150°F
Rinse: Hot deionized water recommended
Drying: Hot air
Storage: Store in polyethylene containers at 5–30°C (41–86°F); standard chemical handling practices required
Shelf Life: 5 years for sealed containers of 5 gallons / 25 liters or larger
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