Aqueous In-line PCB Cleaning Solution – AQUANOX A4625
- Category: PCB Cleaning Agents & Chemistries
- Manufacturer: Kyzen
A versatile aqueous cleaning chemistry designed to clean the latest lead-free residues while providing brilliant mirrored solder finishes. Easy to use, A4625 is environmentally friendly, has a long tank life and is safe for multi-pass applications.
- Successful at Low Concentrations and Low Temperatures
- Eco Friendly; Low VOC Solution
- Effective on All Flux Types Including No-Clean and Pb-Free Residues
- Provides Low Cost of Ownership
- Excellent Material Compatibility
About the Aqueous In-line PCB Cleaning Solution – AQUANOX A4625
AQUANOX® A4625 is a highly dispersive cleaning agent engineered to remove lead-free no-clean flux residues. It is formulated with high dispersive, moderate polarity, and moderate hydrogen bonding forces. It is effective on greater than 90% of the solder pastes in production today. Commonly used to clean rosin and no-clean flux residue types but will also clean water soluble soils.
AQUANOX® A4625 solvency make-up is engineered with a mixture of oxygenated alcohol-ether compounds, which are partially soluble in water. The solvents were selected on their ability to dissolve rosin and resin structures. The solvents provide a unique hydrophobic (rosin/resin loving) and hydrophobic (water loving) balance. The operating concentration range for water soluble soils is 5-10%, 10-15% for rosin-based soils, and 13-18% for no-clean soils.
The concentrated solution contains no water or inorganic salts. The high level of solvency within the product concentrate provides high dispersive values at the dilution concentration ranges. The solvent micro-droplets at operating wash temperatures ranging from 130-155°F provide high affinity for non-polar resin and rosin structures.
AQUANOX® A4625 contains low levels of a polar organic reactive solvent with one side of the molecule inducing the ion-dipole on non-polar resins and the other portion of the molecule providing dispersive forces. These unique properties provide affinity for both ionic and non-ionic solutes. Functional additives are added to reduce interactions on metallic alloys, anodized aluminum, and conversion coatings. The pH ranges from 9.5-10.5 dependent on the in use concentration.
AQUANOX® A4625 is designed for use in spray-in-air cleaning equipment. The operating concentration varies with the soil type. A4625 is a low foam cleaning agent that is commonly monitored based on the solvent / water ratio. Wash time is a function of the soil, component geometry and Z-axis gap. Lower Z-axis gaps under components typically require longer wash times.
Compatibility
Compatible with all materials commonly used in electronic assembly manufacturing and cleaning processes. For specific compatibility information, please contact your Kyzen representative.
Properties
| pH (10 g/L) | 10.3-11.3 |
| Flash Point | 212°F~100°C |
| Boiling Point | 338°F~170°C |
| Water Soluble | Complete |
| VOC, @10% | 94.2 g/L |
Typical Processes
| Application | In-Line |
| Operating Concentration | <15% |
| Temperature | <140°F~60°C |
| Rinse | Hot DI Water |
| Dry | Hot Air |
Availability
Available in 1, 5, and 55 gallon (5, 25, 200 liters) containers.
Storage and Handling
- Packaged in Polyethylene Containers
- Store at 5-30°C/41-86°F in Original Container
- Standard Chemical Handling Practices Required
- Shelf Life of 5 Years, in Sealed Containers of 5 gallons / 25 liters or More
Environmental Regulations
AQUANOX® A4625 is a non-hazardous, biodegradable aqueous solution. It contains no CFC’s or HAP’s.