Detailed Product Description:

 

Metalprep^®79 is a non-flammable multi-purpose phosphoric acid-based

 

cleaner and pre-paint conditioner for most metals.  Application of

 

Metalprep^®79 leaves the surface chemically clean and corrosion free.

 

 

Metalprep^®79 can be used to deep clean and etch a metal surface prior

 

to paint or to prepare a surface for a subsequent chemical coating like

 

that produced by Galvaprep^® SG on zinc and steel or Alodine^®1201 on

 

aluminum surfaces.

 

 

Brush Application:

 

For light oxidation and corrosion removal, dilute one part Metalprep^®79

 

with two parts water.  For heavy oxidation and corrosion removal, dilute

 

one part Metalprep^®79 with one part water.

 

 

Immersion Application:

 

For each 100 parts of bath, add 25 parts Metalprep^®79 to 75 parts of water.

 

 

Spray Application using a 62-G Applicator:

 

Set dilution control on 3, allowing a mix of three parts water to one part

 

Metalprep^®79.

 

 

Equipment:

 

Acid-resisting (rubber, stainless steel, or plastic) buckets, troughs, or other

 

suitable container should be used to hold the diluted Metalprep^®79 cleaning

 

and conditioning chemical solution. 

 

 

Ordinary steel pails may be used for a short period. Galvanized containers

 

should not be used.  If production conditions warrant, troughs may be installed

 

to catch cleaner run-off for reuse.

 

 

Application:

 

A typical treatment time where Metalprep^®79 is in contact with metal surface

 

is between one and two minutes.  The Metalprep^®79 should not be allowed to

 

dry on the metal surface or be permitted to re-oxidize prior to a thorough rinse.

 

 

Metalprep^®79 is normally applied at temperatures between room and 120°F.

 

If drying occurs, rewet with the diluted Metalprep^®79 prior to water rinsing.

 

 

A thorough rinse with clean water is necessary to remove both residual

 

Metalprep^®79 cleaning and conditioning chemicals and oils that have been

 

lifted from the metal surface.

 

 

A clean surface is a "water-break-free surface".  The rinse water sheets out

 

over the metal surface where oil will cause water to bead up.  Chemical

 

cleaners will lift and break down oils on the surface of the metal and assist

 

in rinsing them from the surface of the metal.

 

 

Corrosion is generally the result of a chemical battery reacting on the metal

 

surface.  In the presence of moisture, this corrosion can grow out over the

 

metal surface.  Metalprep^®79 cleaning and conditioning chemicals attack

 

the surface oxides and the corrosion battery.  The result of this attack is either

 

the corrosion battery being removed or deactivated.

 

 

Blushing or yellowing on steel is often seen when using Metalprep^®79 solution.

 

This chemical reaction is not injurious to quality, provided it is not rust or pits.

 

 

Blistering and corrosion problems are often the results of poor rinsing.  Salts and

 

soils trapped under a paint film eventually lead to problems.

 

 

To aid in the removal of heavy oxidation or corrosion, heating and/or applying

 

the Metalprep^®79 cleaning and conditioning chemical with an abrasive pad will

 

shorten the treatment time.  Scotch-Brite pads are often used.

 

 

Metalprep^®79 should not be used on a sand blasted part because rust will form

 

instantaneously.  The rust, then formed, is harmful to quality.  Paint soon after

 

the work is dry in order to prevent soils or rust from contaminating the prepared

 

metal surface.

 

 

Storage Requirements:

 

Metalprep^®79 cleaning and conditioning chemical will freeze at 14°F.  It is

 

recommended that the product be keep from freezing.  However, should it freeze,

 

simply thaw it in a warm place and stir it prior to use.

 

 

Waste Disposal Information:

 

Applicable regulations covering disposal and discharge of chemicals should

 

be consulted and followed.  Disposal information for Metalprep^®79 is given

 

on the Material Safety Data Sheet supplied with this product.  The processing

 

bath is acidic and contains phosphates.  Waste treatment and neutralization may

 

be required prior to discharge to sewer.

 

 

Precautionary Information:

 

Before handling the product, the first aid and handling recommendations found

 

in the Material Safety Data Sheet should be read and followed.  The processing

 

bath is acidic.  Do not get in eyes, on skin or on clothing.  In case of contact,

 

follow the recommendations found in the Material Safety Data Sheet supplied with

 

the product.

 

Packaging/Size:

 

Packed in 1-quart plastic bottle.

 

 

Documentation:

 

 

Click here to download pdf copy of MSDS

 

 

Click here to download pdf copy of Technical Process Bulletin