660 Spray Wash

Our 660 Spray Wash Compound is a heavy duty aluminum cleaner. It was formulated to remove oily soils from aluminum and ferrous metals using spray application parts washers. This low foaming cleaner was originally developed to clean aluminum castings in the automotive rebuilding industry. It is often recommended where heavily soils are present and/or both steel and aluminum parts are cleaned in the same machine.

  • Efficiently penetrates a wide range of oily soils.
  • Excellent dispersion properties prevent redeposition.
  • Expecially well suited where aluminum and steel are cleaned in same machine..
  • Gives maximum solution life.
  • Low foaming.

Physical Properties

Appearance: White free-flowing powder
pH @ 1% Solution: 10.0
Odor: Mild
Solubility in Water Excellent
Foaming Action: Very Low
Rinsing Action: Good
Metal Safety: Ferrous and Aluminum
Standard Container: 400 lb. drum
Refer to our Material Safety Data Sheet for additional information.

Usage and Dilution Instructions

Use 4 to 8 ounces per gallon of water. Maintain solution temperatures of 120° to 160° F. Higher temperatures may darken or pit aluminum. Periodic adds of 1 to 2 ounces per gallon may be made to extend cleaning solution life and maintain low foaming characteristics.

Handling and Storage

This is a highly alkaline product. Use good industrial hygiene practices such as wearing chemical safety goggles, rubber gloves,impermeable apron, and other appropriate protective clothing to prevent contact. Wash thoroughly after handing. In case of contact with skin, flush with plenty of water for 15 minutes. Contact a physician if irritation develops. For eye contact, flush eyes with plenty of water for at least 15 minutes, and consult a physician. Store in cool dry place to help prevent caking and rotate stock. When stored as above, shelf life is a minimum of 2 years.


Progress Chemical guarantees its products will perform to your satisfaction when used in accordance to our recommendations. We back this guarantee with over 65 years experience. Our company has been certified to ISO 9001-2015 Quality Standards.