Is Automotive Urea Harmful to Humans?

[MacReese]

Automotive urea is not harmful to humans. Here is an introduction to automotive urea: 1. Properties: Urea aqueous solution is a high-purity transparent liquid with a faint ammonia odor. Although it is alkaline, it is non-toxic. The SCR solution has obvious advantages in the National IV diesel vehicle exhaust emission treatment system, and automotive urea is an essential additive for the SCR solution. With the gradual implementation of the National IV emission standard for diesel vehicles in various cities, the demand for automotive urea may surge. 2. Categories: Automotive urea includes the urea tank (loaded with diesel exhaust fluid) and the SCR catalytic reaction tank. The operation process of the SCR system is as follows: when nitrogen oxides are detected in the exhaust pipe, the urea tank automatically sprays diesel exhaust fluid. The diesel exhaust fluid and nitrogen oxides undergo a redox reaction in the SCR catalytic reaction tank, producing non-polluting nitrogen and water vapor for discharge.

[DelLeilani]

As a safety consultant, I must remind everyone that automotive urea is primarily used for emission reduction in diesel vehicles and is a high-purity aqueous urea solution. Under normal usage, it poses no direct harm, but contact with skin or eyes may cause mild irritation or discomfort. I've handled cases where accidental spills on hands caused redness and itching, so always wear gloves and protective clothing when handling. Inhaling its vapors in confined spaces may lead to respiratory discomfort—I emphasize working in well-ventilated areas. Store it away from children and pets, keep containers tightly sealed to prevent leaks, and wash hands thoroughly after handling. Overall, following safety guidelines makes it essentially harmless without excessive worry, though caution is advised for prolonged or repeated exposure.

[McBarrett]

As a regular diesel truck owner with years of experience, I often refill the urea solution myself. That stuff is essentially diluted urea liquid. When refilling, if a drop or two gets on my hands, I just rinse it off with water – no skin reaction whatsoever. People say it's harmful, but I believe as long as you don't ingest it or get it in your eyes, you won't get hurt. I always operate in a well-ventilated garage wearing long sleeves for splash protection. My advice to new owners: don't panic, read the manual to learn proper refilling procedures, and keep your tools clean. Overall, daily use poses minimal health risks – just handle it with reasonable care.

[AmirLynn]

I'm a mechanic who works with urea solution daily. It contains 32.5% urea in water. Wear gloves when handling it, otherwise it may cause skin itching or redness, but it's not highly toxic. The risk of inhalation is low, and our repair shop avoids spraying large amounts in confined spaces. I suggest there's no need to fear with normal operations—just store it safely, keep it away from children, and it's basically harmless to humans. Simply replace and refill as needed.