900b Inhibitor

Our 900b Inhibitor is an ultra low foaming water soluble corrosion inhibitor formulated specifically for Brass, Copper and Zinc alloys. 900b leaves an invisible barrier that when used at prescribed concentrations will be dry to touch. Air drying treated surfaces is recommended for optimum performance. This products works well at ambient and/or elevated temperatures. 900b may be applied by dip or spray.

Physical Properties

Appearance: Light Amber Liquid
pH @ 1% Solution: 9.4
Odor: Negligible
Foaming Action: Very Low
Solubility in water: Complete
Rinsing Action: Excellent
Metal Safety: All Metals
Flash Point: None
Stability: Stable
Standard Container: 55 gallon drum
Refer to our Material Safety Data Sheet for additional information.

Usage and Dilution Instructions

Variables such as nature of alloy, how the part is handled before and after inhibiting, storage conditions, humidity, and cleanliness will effect how long parts are protected.

Usage ranges from a minimum of 1/4 percent solutions of 900b in water, to a maximum 2 percent 900b in water. Solution temperature should be maintained between 70E and 160E F. Inhibitor solution should be monitored by means of titration, making adds and changing periodically to insure proper concentrations. It is recommended that parts be air dried before packing into boxes or dunnage containers.

Handling and Storage

This product poses no fire hazards. Use good industrial hygiene practices such a wearing chemical safety goggles, rubber gloves and impermeable apron as necessary to prevent personal contact. If eye contact occurs, flush with plenty of water for at least 15 minutes and consult physician. In case of skin contact, wash with soap and water, removing contaminated clothing and shoes. Store in original tightly closed container between 45E and 85EF. 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.