What is the formula of automotive urea solution?
1 Answers
Automotive urea solution formula is as follows: high-purity urea 32.5%, deionized water 52.5%, methanol 15%. Below is the relevant introduction of automotive urea solution: 1. Working principle: To make trucks meet the National IV emission standards, the SCR system (Selective Catalytic Reduction technology) must be used in exhaust treatment. This system requires urea solution to treat nitrogen oxides in the exhaust, making urea a necessity. 2. Raw materials: Urea refers to a urea aqueous solution with a urea concentration of 32.5% and the solvent being ultra-pure water. The raw materials are special automotive urea raw materials and ultra-pure water. Urea is mainly obtained from the purification of industrial urea, and automotive urea must use electronic-grade ultra-pure water.