What Causes Small Yellow Spots on Cars?

[LaKhloe]

The formation of small yellow spots on cars is caused by iron particles. These yellow spots occur when iron particles in the air adhere to the car's paint surface due to static electricity. Formation of Car Rust: The primary cause of rust is the reaction of iron metal with moisture and oxygen in the environment, especially in the presence of carbon impurities. Iron oxide is used industrially in paints, inks, rubber (as a catalyst), and as a polishing agent for glass, gemstones, and metals. It can also serve as a raw material for iron smelting. The largest application of iron oxide is as a pigment. Methods to Remove Car Rust: Use acidic substances to remove rust, such as dilute hydrochloric acid, oxalic acid, or household vinegar (acetic acid). However, be cautious not to overuse these substances, as they may cause secondary corrosion and require proper maintenance. Alternatively, use detergents or toothpaste to remove rust. Apply bathroom cleaner or toothpaste with a soft cloth and rub repeatedly on the rusted areas for effective results. Some cleaning powders mainly contain sodium bicarbonate (industrial baking soda), surfactants, a small amount of clay for adsorption, fine sand for increased friction, and a small amount of alkali for enhanced cleaning power. However, these powders can be corrosive and may cause fine scratches on the car's surface.