MicroClean™ EC-2 RDZ-1604

Acid Copper Spray Cleaner

MicroClean™ EC-2 (RDZ-1604) is an acid cleaner designed to thoroughly clean copper at low concentrations. MicroClean™ EC-2 (RDZ-1604) will not lift or soften dry film or screen resists. MicroClean™ EC-2 (RDZ-1604) may be used as a precleaner before microetch or as a stand alone-cleaner before photoresist. MicroClean™ EC-2 is a true cleaner, and removes soils and Copper oxides only, and no base metal. MicroClean™ EC-2 (RDZ-1604) may be used to safely clean DT and RTF Copper foils.

MAKE-UP:
MicroClean™ EC-2 (RDZ-1604) is used at 5% to 10% by volume. Higher concentrations or temperatures are required for faster cleaning.

OPERATION:
Use MicroClean™ EC-2 (RDZ-1604) at a temperature range of 115° - 130° F for 1-2 minutes.

After use, rinse boards thoroughly, preferably in an opposed-offset spray rinse, and process immediately.

EQUIPMENT:
Use a plastic tank that can withstand application temperature: polypropylene, fiberglass or reinforced polyethylene. Stainless Steel may be used only if makeup water is chloride free.

SAFETY:

MicroClean™ EC-2 (RDZ-1604) is a mildly hazardous, acidic product, however, care should be taken when handling. Eye protection is required: goggles, a full-face shield, or other protection that will completely prevent contact with eyes is recommended. Plastic or rubber safety gloves should be worn. Avoid contact with skin. Consult Material Safety Data Sheet for further information.

DISPOSAL:
Spent cleaning solution may contain large amounts of dissolved copper. Prior to disposal, the solution may require neutralization and precipitation of the copper or the solution may need to be disposed of at an approved hazardous waste disposal site. MicroClean™ EC-2 (RDZ-1604) contains some chelates. Dispose of in accordance with Federal, State, and Local regulations. Contact your RD Chemical representative for further information.

PACKAGING:

MicroClean™ EC-2 (RDZ-1604) is supplied in 15 and 55 gallon drums.

Determination of Concentration of MicroClean™ EC-2 (RDZ-1604)

Equipment Required:

• 1 (50 ml) Buret
• 1 250 ml Flask for titration
• 1 25 ml pipet
• Magnetic Stirrer (optional)

Reagents required:

• 1.OO N NaOH (Sodium Hydroxide)
• Phenolphthalein indicator solution

Procedure:

• 1. Pipette 25-ml sample of bath into flask.
• 2. Dilute with water (deionized preferred) to convenient volume.
• 3. Add a few drops of Phenolphthalein indicator.
• 4. Titrate with 1.00 N NaOH to first permanent pink color. Note mls 1.00 N NaOH used.

% MicroClean™ EC-2 (RDZ-1604) by volume = mls 1.00N NaOH X 0.61

RD Chemical Company makes these recommendations in good faith, based on laboratory and field testing. Ultimate responsibility for propriety of use, however, must rest with the purchaser and user. RD Chemical Company recommends thorough testing of its products, before use.