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KYZEN Aquanox® A4638 – Advanced cleaning agent for flux residue removal in flip chip and low-clearance components

  • 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)

  1. 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.

  2. 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.

  1. 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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