What Anti-rust additives in the coolant? The Rust-Inhibiting Additives in Car antifreeze

Qualified coolant has anti-corrosion, anti-rust, and anti-freeze functions, protecting the engine, water tank, and pipelines, and the coolants should be suitable for all seasons. It reduces the engine temperature through forced circulation, ensures a rapid start at low temperatures, reduces mechanical wear, and prolongs the engine's life. Antifreeze can also prevent water tank corrosion and cracking.

 

Do you know what chemicals in the car coolant?

 

Generally speaking, the main components of automotive coolant are ethylene glycol, water as the base material, and also contain pH buffers, rust inhibitors for aluminum alloys, ferrous metals, copper, pitting inhibitors, dispersants, defoaming agents, dyes and other chemicals.

 

Except for the base of ethylene glycol and water, there are many anti-corrosion additives in the coolant formulation. The coolant is a stable system to protect the cooling system of the car engines.

 

In the car coolant, ethylene glycol tends to be oxidized and produces acidic chemicals, which may corrode the metal parts of the cooling system, so corrosion inhibitors must be added to the coolant to prevent rust, corrosion, and scales.

Each qualified coolant has a system of corrosion inhibitors, which have a balanced corrosion inhibition effect on various metals. The engine cooling system contains 6 types of metals, including cast iron, cast aluminum, steel, copper, brass and solder in the water tank.

The engine cylinder of a passenger car is generally made of cast aluminum, the engine cylinder of a truck is made of cast iron, and the radiators are mainly made of aluminum and copper. Every day, the engine's cooling system bears varying degrees of corrosion at all times

 

No single corrosion inhibitor chemical can protect all metals in the engine cooling system. Therefore, the corrosion inhibitor of the antifreeze is a composite formula of multiple corrosion inhibitors, which can not only protect all metals in the system from corrosion, pitting and cavitation but also maintain stable performance in long-term use, while being cheap and environmentally friendly.

Vehicle coolants are mainly divided into inorganic antifreeze, organic acid antifreeze, and semi-organic acid antifreeze.

 

Coolants of inorganic corrosion inhibitors

Inorganic coolants usually use inorganic salts such as silicates, phosphates, and nitrates as corrosion inhibitors, and is mainly used in early cars or certain specific models.

 

Coolants of organic acid technology (OAT)

OAT coolants use organic acids (such as sebacic acid, etc.) as the main corrosion inhibitors, which are suitable for modern vehicles and have long-term protection, high temperature stability and environmental protection advantages.

 

Coolants of Semi-organic acid (Hybrid Organic Acid Technology HOAT)

HOAT coolant is a combination of inorganic and organic acid technology (OAT). It contains both inorganic salt corrosion inhibitors (such as silicates) and organic acid corrosion inhibitors (such as sebacic acid, etc).

 

OAT Coolant has overcome the shortcomings of inorganic antifreeze with its good anti-corrosion performance, storage stability and hard water resistance, and is increasingly favored by people. Organic antifreeze does not contain inorganic salts and has excellent environmental performance. It has become the mainstream product of automotive antifreeze in the world.

 

 

 

Chorus^® supplies OAT and HOAT anti-rust coolant additive packages for the coolant manufacturers. ( corrosion inhibitor packages)

These corrosion inhibitor packages are engineered to provide excellent performance, ensuring long-lasting protection against rust, corrosion, and scale for modern engines.

Chorus^® does not only supply the anti-corrosion additive packages but also supplies a full solution to produce the modern collants. Contact us to get the latest price for corrosion inhibitor packages and coolant manufacture solutions.