PR-100 Rust Inhibitor

PR-100 is a low alkaline water soluble interim process rust inhibitor containing Sodium Nitrite. It is formulated specifically for ferrous metals. In addition to protecting iron and steel parts, it also is used to inhibit steel media for longer term storage.

Physical Properties

Appearance: White Granular Powder
pH @ 1% Solution: 9.1
Odor: Mild
Foaming Action: Very Low
Solubility in water: Complete
Rinsing Action: Excellent
Metal Safety: Ferrous & Non-ferrous
Flash Point: None
Stability: Stable
Standard Container: 400 pound drum

Refer to our Material Safety Data Sheet for additional information.

Usage and Dilution Instructions

Use 1 to 4 ounces per gallon of water. Usage may vary depending on nature of parts, nature of process, physical characteristics, humidity, storage conditions, time requirements, and equipment used. This product was formulated to provide ferrous metals interim process corrosion protection for 30-60 days. The length of protection will vary depending on storage conditions humidity, nature of part, alloy, and processes involved. It is not formulated to protect parts from extremely high humidity, water sprays, salt sprays, or direct contact with water or rain.

Handling & Storage

This product does not pose any fire hazards. Use good industrial hygiene practices. Product and its solutions may be drying or irritating to skin and eyes. Wearing chemical safety goggles, rubber gloves, and impermeable apron, etc. is recommended. In case of skin contact, wash with soap and warm water. In case of eye contact, flush with water for at least 15 minutes and consult physician. Store in tightly closed container in a cool dry place to help prevent caking. When stored as stated 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.

The Ultimate Solution for Ferrous Metal Protection and Maintenance

When it comes to protecting ferrous metal surfaces from rust and corrosion, finding the right product can be a challenge. With so many options on the market, it can be difficult to know which one will deliver the results you need. That's where PR-100 comes in. Developed by Progress Chemical, this innovative product is designed to meet the unique needs of industrial facilities, providing effective rust protection and maintenance solutions for ferrous metals.

So, what exactly is PR-100? In a nutshell, it's a low alkaline water soluble interim process rust inhibitor containing Sodium Nitrite. Formulated specifically for ferrous metals, PR-100 provides effective protection for iron and steel parts, and can also be used to inhibit steel media for longer term storage.

One of the key benefits of PR-100 is its versatility. Whether you're looking to protect your machinery, equipment, or other ferrous metal surfaces, PR-100 has the power to get the job done. In addition to its rust protection capabilities, PR-100 can also be used to inhibit steel media for longer term storage, making it a versatile solution for a wide range of industrial needs.

Another advantage of PR-100 is its efficiency. With its low alkaline formula, PR-100 provides excellent rinsing action, ensuring that your metal surfaces are thoroughly cleaned and free of residue. Whether you're working with iron, steel, or other ferrous metals, PR-100 provides effective and efficient results every time.

So, how do you use PR-100? It's simple. Just mix the recommended amount of PR-100 with water and apply it to the metal surface you want to protect. For best results, let the solution sit for a few minutes before rinsing it off with water. Whether you're using it to protect your machinery, equipment, or other ferrous metal surfaces, PR-100 provides fast and effective results every time.

In conclusion, PR-100 is the ultimate solution for ferrous metal protection and maintenance. With its versatility, efficiency, and effectiveness, it's the perfect choice for any industrial facility looking to protect their metal surfaces from rust and corrosion. So why wait? Visit today to learn more about PR-100 and how it can help you tackle your rust protection and maintenance needs.


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